| Trade Group No. | Description of Item |
| 00. Metal/Non Metal Processing Group |
| 0005 | Light C.I. Castings (including machining) upto 50 Kgs. |
| 0006 | Medium C.I. castings (including machining) upto 1000 kgs. |
| 0007 | Heavy C.I. castings (including machining) beyond 1000Kgs. |
| 0008 | Spheroidal graphite Cast Iron including machining |
| 0009 | Machanite C.I. items. |
| 0010 | Steel castings with machining upto 500 kgs |
| 0011 | Steel castings with machining above 500 kgs |
| 0016 | Malleable casting with machining |
| 0018 | Non ferrous casting with machining |
| 0020 | Die castings |
| 0021 | Injection moulding |
| 0022 | Forgings medium with machining |
| 0023 | Forgings heavy with machining |
| 0024 | Drop stampings and offset forging |
| 0025 | Wheels , Tyres, Axles for Rolling Stock |
| 0026 | Wheels , Tyres, Axles for other than Rolling Stock |
| 0027 | Glut rings |
| 0028 | Blow Moulding |
| 0029 | Gears and Pinions for Traction Motors |
| 0030 | Gears and Pinions for other Operations |
| 0032 | Components involving machining only |
| 0034 | Heavy Plate work |
| 0035 | Heavy fabrication work -special to Rolling Stock |
| 0036 | Fabricated components Welded and Rivetted. |
| 0038 | Punching and Press Work |
| 0039 | Re-Rolling –Rounds, Flats, etc . |
| 0042 | Springs Helical and volute |
| 0043 | Spring laminated |
| 0044 | Springs of S.S. Wire |
| 0047 | Manganese steel components such as Liners, Pins and Bushes. |
| 01. Conversion/Miscellaneous Process Group |
| 0107 | Refining & smelting of non-ferrous scrap into virgin metals and alloy ingots |
| 0108 | Heat treatment- flame, Induction, Case Hardening/ Carburising Metalizing |
| 0109 | Galvanising of components-Hot dip/Electrolysis. |
| 0110 | Anodising of components. |
| 0111 | Chromium plating of components, hard chromium, nickel, cadmium, lead plating of components. |
| 0112 | Non- metallic coating-Rubber lining, epoxy coating, plastic coating etc. |
| 0113 | Abrasive Blasting: Sand Blasting, Shot Blasting & Grit Blasting etc |
| 0114 | Powder Coating |
| 0115 | Cutting and shearing of steel sections including plates |
| 0116 | Painting Process: Brush, Roller and spray |
| 0117 | Fabrication of bridge and other structures |
| 0120 | Fabrication of garments , stitching printing and binding work |
| 0122 | Printing and binding works |
| 0130 | Automobile body building |
| 0131 | Automobile repairs |
| 03. Services-All Types |
| 0301 | Renting and Leasing of Motor Vehicles |
| 0302 | Renting and Leasing of Recreational and Sports Goods |
| 0303 | Renting and Leasing of Tent, Furniture, Pottery and Glass, Kitchen and Tableware, Utensils, Household Electrical and Electronic Equipment etc. |
| 0304 | Renting and Leasing of books, journals and magazines |
| 0305 | Renting and Leasing of other machinery, equipment and tangible goods N.E.C. |
| 0306 | Renting and Operational leasing of other machinery and equipment |
| 0307 | Renting and operational leasing of construction and civil-engineering machinery and equipment without operator |
| 0308 | Renting and operational leasing of office machinery and equipment |
| 0309 | Renting and operational leasing of land-transport equipment (other than motor vehicles) |
| 0310 | Renting and operational leasing of water transport equipment |
| 0311 | Renting and Leasing of air transport equipment |
| 0312 | Renting of other tangible goods (includes renting of containers, pallets etc.) |
| 0313 | Renting and Leasing of other machinery and equipment |
| 0314 | Hiring of manpower-skilled/semi-skilled/unskilled |
| 0315 | Hiring of travel /tourist services |
| 0316 | Hiring of event management services |
| 0317 | Hiring of security services |
| 0318 | Hiring of housekeeping / cleaning services |
| 0319 | Hiring of Horticulture services |
| 0320 | Hiring of documentation/ digitization services |
| 0321 | Hiring of helpdesk services |
| 0322 | Hiring of collection agencies and credit bureaus |
| 0323 | Hiring of packaging services |
| 0324 | Hiring of consultancy services |
| 0325 | Hiring of exam conducting services |
| 0326 | Hiring of maintenance services for locomotives |
| 0327 | Hiring of maintenance services for coaches/wagons |
| 0328 | Maintenance services for Heritage trains |
| 0329 | Hiring of Train operation services |
| 0330 | Hiring of clearing agents |
| 0331 | Hiring of Auctioneers |
| 0332 | Hiring of Transport services |
| 0333 | Hiring of Medical equipment |
| 0334 | Hiring / Empanelment of medical services |
| 0335 | Hiring / Empanelment of Diagnostic services |
| 0336 | Pest control treatments including Anti-termite treatments, Fumigation etc. |
| 04. Items Peculiar to Heritage Trains |
| 0401 | Spares/item parts pertaining to maintenance of heritage trains |
| 10. Items Peculiar to Diesel Locos |
| 1005 | Engine Block and main base and generator support |
| 1008 | Cylinder liners |
| 1009 | Pistons, Piston Rings, Wrist Pins |
| 1010 | Cylinder, Head/Valve lever Assemblies and sub assemblies |
| 1011 | Inlet and exhaust valves, valve seat inserts and valve guides, push rods, fuel supports Fulcrums, Cam rollers, Spring seat and valve locks |
| 1015 | Crank shaft/Cam shaft and extension shafts |
| 1017 | Exhaust manifolds |
| 1019 | Turbo super charger and spares including inlet and outer castings |
| 1021 | Water cooler, after cooler and lube Oil cooler |
| 1023 | Bimetal and trimetal bearing and Bushings |
| 1024 | Shims |
| 1025 | Fuel infection system (Imported MICO) |
| 1027 | Valves for lube oil and fuel oil system |
| 1029 | Governor and Governor drives including mounting and linkage |
| 1031 | Overspeed Trip Assembly and Acceleration control devices. |
| 1033 | Vibration Damper clutch plates |
| 1035 | Cardan shafts/propeller shafts |
| 1037 | Sock filters, paper filters, Oil bath filters and strainers |
| 1039 | Water pump, Lube oil pumps, fuel pump and spares blowers, Crank cast exhausters |
| 1041 | Snubber valve assembly |
| 1043 | Air pressure control valves |
| 1044 | Tachometer generator assembly |
| 1045 | Elbow bends and fuel oil piping |
| 1047 | Gasket metallic, O rings and oil seals |
| 1079 | Sophisticated and high precision spares for diesel locos not otherwise classified. |
| 11. Items Peculiar To Vehicle and Chassis Of Diesel Locos |
| 1105 | Hydraulic and hydro-mechanical transmission and spares. |
| 1110 | Vulcan couplings, fluid couplings and gear type coupling |
| 1113 | Air compressor, vacuum exhauster, Compressor and spares. |
| 1115 | Air- brake and vigilance control and spares, Auto brake valve, independent brake valve, Pilot selector valve, air valve, air reservoirs. |
| 1117 | Air Compressor, governor |
| 1119 | Radiator fan Body current clutch and spares |
| 1121 | Air horns |
| 1124 | Sand conveyors and allied equipment |
| 1125 | window wiper assembly with motor components |
| 1126 | Insulated metallic fittings such as end bushes terminal strips, handles etc., |
| 1127 | Sun-visor assembly |
| 1129 | Sliding window and components, door-latch and door locks assembly |
| 1135 | Speed recorder and Allied equipment |
| 1139 | Valves-sander control, horn operating, safety auto drains pressure regularising and needle valves, fuel-flow valves check, double check and glove valves |
| 1141 | Clock-Angle clock combined cut- out cock and strainer three way cock, drain and cut out cocks |
| 1143 | Traction motor blower, Induct boot and allied assembly |
| 1179 | Other sophisticated and high precision spares for diesel locos not otherwise classified |
| 12. Electrical Items used in Diesel Locos |
| 1201 | Crank case motor, Fuel pump motor, Crank case exhauster |
| 1202 | Braking resistors-Dynamic/regenerative |
| 1203 | Driving control desk and its spares |
| 1204 | Water level indicator, switch, push botton, clutch |
| 1205 | Blocking rectifier panel |
| 1206 | Engine control switch |
| 1207 | Twin beam head light and spares |
| 1208 | Terminal block |
| 1209 | Arc chutes |
| 1210 | EPC (Electro Pneumatic Contactor) |
| 1211 | EMC (Electro Magnetic Contactor) |
| 1212 | Relays |
| 1213 | Traction motors and spares |
| 1214 | Vigilance control device and its spares |
| 1215 | Wires, conductors, Jumper, lug terminal, wire terminal |
| 1216 | Marker light, Flasher light, Indication panel |
| 1217 | Air diffuser |
| 1218 | Brush Holder |
| 16. High Horsepower Diesel Loco Items |
| 1601 | All types of Fasteners including Hex Nuts, Bolts, Screws, pins, washers, clips, Dowels |
| 1602 | Elbows, pipes, Tee, coupling, lever, coupling flange, plug, stud, valves, insert, link, connector, nipple, tube assembly, ferrule |
| 1603 | All types of Gaskets, rubber seals |
| 1606 | Crank case ejector |
| 1607 | Exhaust chamber and spares |
| 1608 | Heat shield |
| 1609 | Oil separator |
| 1610 | Dust shield |
| 1611 | Bracket and cap assembly, clamp |
| 1612 | Cam shaft and spares |
| 1613 | Counterweight |
| 1614 | All types of plates, rings, seats, shims, sleeves, spacers |
| 1615 | Exhaust valve and spares |
| 1618 | Lube oil strainer assembly, Gate and stop assembly, Retainer |
| 1619 | Hand wheel |
| 1621 | Rocker Arm |
| 1622 | Casting housing, Impeller |
| 1623 | Flange Governor |
| 1624 | Shafts |
| 1625 | Air inlet duct and spares |
| 1626 | Clevis cover |
| 1627 | Exhaust diffuser |
| 1628 | Heat shield |
| 1629 | Idler Gear, Idler shaft |
| 1630 | Turbo bearing spares, bearing sleeve |
| 1631 | Damper |
| 1632 | Hose assembly and related items |
| 1633 | Crank case spares |
| 1634 | Rotor assembly |
| 1635 | Sensor |
| 1636 | Exhaust Elbow |
| 1637 | After cooler |
| 1638 | Bearing cap |
| 1639 | Air duct |
| 1640 | Exhaust manifold |
| 1641 | Lube oil pump and spares |
| 1642 | Cylinder liner related items |
| 1643 | Connecting rod assembly and spares |
| 1644 | Gears and pinions |
| 1645 | Lube oil cooler |
| 1646 | Connecting Rod and spares |
| 1647 | Lube oil pump and spares |
| 1648 | Expansion Joint |
| 1649 | Engine coupling |
| 1650 | Frame and latch |
| 1651 | Cylinder head and spares |
| 1652 | Strainer and related items |
| 1653 | Piston |
| 1654 | Radiator assembly and spares |
| 1655 | Crank shaft and spares |
| 1656 | Other items of power pack and engines |
| 1657 | Door assembly and spares |
| 1658 | Battery box assembly and spares |
| 1659 | Fuel tank |
| 1660 | Wiper assembly |
| 1661 | Brake cylinder |
| 1662 | Gear case |
| 1663 | Cattle Guard assembly |
| 1664 | All lighting equipment |
| 1665 | Generator, Motor, Blower and spares |
| 1666 | Braking resistors-dynamic /regenerative |
| 1667 | Other items not classified above |
| 23. Items of AC Electric Locos |
| 2301 | Static Converter for electric locomotive |
| 2302 | Arno Convertors and spares |
| 2303 | Main compressor and Auxiliary compressor their parts and accessories for electric locomotives |
| 2304 | Silicon rectifiers and their parts for electric locomotives |
| 2305 | Diodes-Blocking |
| 2306 | Tap changers |
| 2307 | Components of Tap Changer N-32 |
| 2308 | Notch indicator |
| 2309 | Transformers (Power and Control) |
| 2310 | Oil Cooler Radiator |
| 2311 | Cable head termination system for locomotives and EMU |
| 2312 | Pantograph and its components |
| 2313 | Metallized carbon strip for pantographs |
| 2314 | Insulator Panto mounting and insulator roofline |
| 2315 | Roof line fittings |
| 2316 | Circuit breakers |
| 2317 | Surge arrestors for electric locomotive |
| 2318 | H.R.C. Fuses (High Rupture Capacity) |
| 2319 | Vigilance control device for 25KV AC tap changer locomotive |
| 2320 | Microprocessor based control and fault diagnostic system for electric locomotives |
| 2321 | Microprocessor based energy cum speed monitoring unit for diesel and electric |
| 2322 | Master controller |
| 2323 | Tri plate panel for conventional electric locomotive |
| 2324 | Dynamic and regenerative brake equipment, their components and accessories |
| 2325 | Voltage regulators, ‘E’ type control equipment, Excitation and transition control panels |
| 2326 | Frequency regulators |
| 2327 | TM Protection and all protective relays and other relays for electric locomotives |
| 2328 | All E.P. Contractors |
| 2329 | Magnet valves and switches, signaling horn for electric locomotives |
| 2330 | Resistances |
| 2331 | Shunts |
| 2332 | Smoothing reactors and inductive shunts, their parts and components |
| 2333 | Snubber circuits and capacitors |
| 2334 | Air dryer for electric locomotive |
| 2335 | Traction motor TAO 659 and its components and spare parts |
| 2336 | Traction motor hitachi and its components and spare parts |
| 2337 | Traction motor inspection cover |
| 2338 | Static battery charges |
| 2339 | Twin beam head light and DC-DC converter for twin beam head light |
| 2340 | Superstructure items, components including High tensile C.B. Couplers, loco side buffer assembly, cab window assembly, air inlet guard assembly, centre pivot assembly, cattle guard |
| 2341 | Air brake items including reservoir, brake cylinder, valves, cocks, C3W Distributor valve, Hose coupling |
| 2342 | Suspension tube items and their assembly components |
| 2343 | Bogie frames complete for Co-Co locomotives |
| 2344 | Bogie items and their assembly components including bogie frame assembly, Brake gear arrangement, Pivot liner, Axle Collar, centre block assembly, equaliser seat assembly, side bearer, rubber bush assembly for centre pivot etc. |
| 2345 | Gear & pinion |
| 2346 | Axle box housing its components and spare parts |
| 2347 | Suspension springs & Hydraulic dampers |
| 2348 | Spring seat assembly |
| 2349 | Protection cover for TM |
| 2350 | Bellows for TM |
| 2351 | T.M. Bellow mounting assembly |
| 2352 | Compensating and equalizer beam and link |
| 2353 | Equaliser beam-long and short |
| 2354 | Hitachi/TAO 659 Gear case |
| 2355 | Brake block for electric locomotives |
| 2356 | Wiper assembly |
| 2357 | Front lookout glass for locomotives |
| 2358 | Rubber items/kits for electric locos |
| 2359 | Wheel and Axles for locomotives |
| 2360 | Sophisticated and high precision spares for electric locos not otherwise classified |
| 29. Items peculiar to three phase electric locomotives |
| 2901 | GTO based convertors and MICAS VCU of 3-phase locomotives, parts and accessories |
| 2902 | 3 phase asynchronous traction motors |
| 2903 | Single phase to three phase converter, parts and accessories |
| 2904 | Main compressor (Conventional /oil free) for 3-phase locomotives parts and Auxiliaries |
| 2905 | Traction Motor Bearing for 3-Phase Locos |
| 2906 | Computer / Microprocessor Controlled Air Brake for 3-Phase Locomotive, Parts and Accessories |
| 2907 | EP Assisted Brake System for 3-Phase Locos |
| 2908 | Brake System for 3-Phase Locos, Parts and Accessories |
| 2909 | Axle Box Bearing for 3-Phase Locos |
| 2910 | Rubber Components / Kits for Brake for 3-Phase Locos |
| 2911 | Rubber Components /Kits for CCB System for 3-Phase Locos |
| 2912 | Spheribloc for 3-Phase Locos |
| 2913 | Elastic Ring for 3-Phase Locos |
| 2914 | Crowned Gear Coupling for 3-Phase Locos |
| 2915 | Helical Spring for 3-Phase Locos |
| 2916 | Aluminium Gear Box for 3-Phase Locos |
| 2917 | Axle Guide Bearing for 3-Phase Locos |
| 2918 | Suspension Tube and it's Assembly Components for 3-Phase Locos |
| 2919 | Suspension Tube Bearings for 3-Phase Locos |
| 2920 | Holder for TM Suspension |
| 2921 | Pivot |
| 2922 | Tread Brake Arrangement Complete |
| 2923 | Brake Gear Arrangement |
| 2924 | Bogie Items of 3 Phase Locos not classified elsewhere |
| 2925 | Cab Air Conditioning System |
| 30. Items Peculiar To Coaching Stock |
| 3005 | Centre buffer couplers, draft gear and buffer assemblies. |
| 3008 | Shackle type couplers (for EMUs) |
| 3010 | Screw coupling of all types |
| 3013 | Vacuum brake fittings such as cylinders DA valves, alarm valves, release valves etc. |
| 3014 | Air brake fittings |
| 3017 | Hose pipe syphon, packing and rolling rings etc. |
| 3020 | Slack adjusters |
| 3024 | Empty load box |
| 3028 | Shock absorbers |
| 3030 | Silent blocks |
| 3033 | Vestibules |
| 3036 | Window shutters and doors |
| 3039 | Roof water tanks |
| 3042 | Stainless steel fittings for C&W stock |
| 3044 | Commodes |
| 3045 | Bio Toilets, and it's Parts, Accessories and Spares |
| 3046 | Controlled Discharged Toilet System, and it's Parts, Accessories and Spares |
| 3047 | Vaccum Toilet system, and it's Parts, Accessories and Spares |
| 3048 | Axle pulleys |
| 3049 | Battery boxes for coaches |
| 3051 | Carriage door locks |
| 3052 | Miscellaneous coach fittings not included in other groups Lavatory |
| 3055 | Miscellaneous coach fittings not included in other groups -Exterior |
| 3057 | Miscellaneous coach fittings not included in other groups- Interior |
| 3059 | E.P./air-brake equipments and spares. |
| 31. Items of EMU |
| 3101 | Complete EMU/MEMU Coach |
| 3102 | Upper and Lower Washer |
| 3103 | Hose Connection |
| 3104 | Draw Gear and Spares |
| 3105 | Polycarbonate Seats |
| 3106 | Handles |
| 3107 | Windows |
| 3108 | Doors |
| 3109 | Stainless Steel Partitions |
| 3110 | Driver Seat |
| 3111 | Driving Panel and Spares |
| 3112 | Roof Ventilator |
| 3113 | Cylinder, Reservoir |
| 3114 | Stainless Steel Fabrication |
| 3115 | Trough Floor-Stainless Steel |
| 3116 | SS Battery Box |
| 3117 | Traction Motors for EMU/ MEMU |
| 3118 | SS Nose Cone |
| 3119 | SS Side Wall, End Wall, Roof |
| 3120 | Cushioned Seats |
| 3121 | Cable Bushing |
| 3122 | Circuit Breaker |
| 3123 | Transformer |
| 3124 | Rectifier, Smoothing Reactor |
| 3125 | Relays and Contactors |
| 3126 | Control Coupler |
| 3127 | Other EMU / MEMU Electrics not classified Elsewhere |
| 33. Items peculiar to LHB Coaches |
| 3301 | Control panel for ventilator fan, battery charging and radiator fan |
| 3304 | Feeder Junction box |
| 3306 | Pre-Cooling Plug & Socket |
| 3307 | Switch Plates Assemblies |
| 3310 | Double Inlet Centrifugal Blower Assembly and spares |
| 3311 | Pump Equipment with Controller |
| 3312 | Smoke Detector Unit |
| 3314 | Capacitor Bank |
| 3319 | Composite pantry |
| 3321 | Terminal Connector Complete |
| 3322 | All Types of Windows including Hooper Windows |
| 3323 | Interior Doors |
| 3324 | End Wall Sliding Door |
| 3325 | FRP Side Wall Panels & FRP Ceiling Sheet Assemblies |
| 3326 | FRP Lavatory Modules |
| 3327 | All Type of FRP Windows |
| 3328 | All Types of Aluminium Water Tanks |
| 3329 | Stainless Steel Water Tank |
| 3330 | Fuel Tank For LHB Power Car |
| 3331 | Honey Comb partition Frames |
| 3333 | Inter-car Gangway amounting |
| 3337 | HPL Sheet |
| 3339 | Single Ferrule Fittings |
| 3340 | Stainless Steel Pipes and Double Ferrule Fittings |
| 3341 | Seat and Berth |
| 3342 | DGFRP |
| 3343 | Anti Roll Bar & Fork |
| 3344 | Spring Dome |
| 3345 | Roll Link |
| 3346 | Traction Centre |
| 3347 | Spring Pot |
| 3348 | Brake Support |
| 3349 | Centring Disc |
| 3350 | Set of Control Arm (Casting, Casting & Finished) |
| 3351 | Elastomer Metal Bonded Item For Fiat Bogie and their kits |
| 3352 | Fiat Bogie Frame |
| 3353 | Break Beam & Tube |
| 3354 | Forge Pin for Fiat Bogie |
| 3355 | Bogie Bolster For LHB Coaches |
| 3356 | Pin Bracket |
| 3357 | Anti Roll Bar Bracket |
| 3358 | Security Disc And Disc |
| 3359 | Centre Pivot Assembly |
| 3360 | Kit of Coil Spring |
| 3361 | Dome Cum Reservoir Assembly |
| 3362 | Under frame for all type LHB coaches |
| 3363 | Front Part for all type LHB coaches |
| 3364 | Roof for all type LHB coaches |
| 3365 | Side Wall for all type LHB coaches |
| 3366 | Console |
| 3367 | Set of Lavatory Side wall |
| 3368 | Hand Brake Arrangement |
| 3369 | Shell Kit |
| 3370 | Set of Side Buffer Assembly (Helical Spring Type) |
| 3371 | CRF Items |
| 3372 | Set of Side Wall Skin Sheeting |
| 34. Items peculiar to Train sets |
| 3401 | Equipment, Spare parts and components required for Train Sets |
| 38. Item peculiar to Wagons |
| 3801 | Complete Wagon |
| 3802 | End Wall, Side Wall, Doors |
| 3803 | Draft Gear and Spares |
| 3804 | Coupler and Spares |
| 3805 | Bogie Structure |
| 3806 | CTRB, Grease Seal |
| 3807 | Brake System |
| 3808 | Brake Block |
| 3809 | Twist Lock |
| 3810 | Draw Bar |
| 3811 | Cylinders, Reservoirs |
| 40. Cables, Conductors, Transmission Materials |
| 4001 | LV Cables Copper Conductors, Single/Multi Cores, Sheathed/ Unsheathed, Armoured/ Unarmoured, Stranded/Solid. PVC/ XLPE Insulated for Electrical Purposes |
| 4002 | HV Cables Copper Conductors, Single/Multi Cores, Sheathed/ Unsheathed, Armoured/ Unarmoured, Stranded/Solid, PVC/ XLPE Insulated for Electrical Purposes |
| 4003 | LV Cables Aluminium Conductors, Single/Multi Cores, Sheathed/ Unsheathed, Armoured/ Unarmoured, Stranded/Solid, PVC/XLPE Insulated for Electrical Purposes |
| 4004 | HV Cables Copper Conductors, Single/Multi Cores, Sheathed/ Unsheathed, Armoured/ Unarmoured, Stranded/ Solid, PVC/XLPE Insulated for Electrical Purposes |
| 4005 | PIJF Cables for Telecommunication Purpose |
| 4006 | Armoured/ Unarmoured Optical Fibre Cables |
| 4007 | PVC Insulated Underground Unscreened/Screened, Copper Cables for Rly. Signalling |
| 4008 | PVC Insulated Indoor Cables for Rly. Signalling |
| 4009 | Thermo Shrink Jointing Kits for Cables |
| 4010 | PVC Insulated Aluminium Screened/Unscreened Cables for Rly. Signalling |
| 4011 | Quad Cable for Railway Signalling |
| 4012 | Silicone Gel Based Jointing Kits for Cables |
| 4013 | Optical Fibre Splicing Tool Kits |
| 4014 | Cable Lugs, Cable Jackets, Cable Binders, Cable Coupler & Cable Ties |
| 4015 | Crimping Sockets |
| 4016 | Single Core/Multi Core Elastomeric/HRPVC Cables For Diesel/ Electric Locos, Coaches and EMUs |
| 4017 | Jumper Cable |
| 4018 | Zero Halogen Low Smoke Cables for Metro Coaches |
| 4019 | Aluminium Conductor Steel Reinforced |
| 4020 | Conductors Copper Wire Bare for Electrical Purposes |
| 4021 | Conductors Copper other than Wire |
| 4022 | Wire Winding Super Enamelled/ Cotton Covered/Polyamide. |
| 4023 | Co-Axial Cable, Cat-5/6 Cables etc. for Computer Networking |
| 4024 | Resistance Wires, Fuse Wires etc. |
| 41. Insulators and insulating Materials |
| 4105 | Sheets, Rods, Blocks etc. Synthetic Resin Bonded Laminated |
| 4115 | Ebonite Sheets, Blocks etc. |
| 4120 | Vulcanised Fibre Sheets, Special Resistor Panels, Robs Block etc. |
| 4125 | All types of Insulating Materials such as Paper, Black Tape, Cotton Tape, PVC Tape, Fibre, Glasswool, asbestos, Ebonite, Mica, Sleeves etc. |
| 4130 | Glass, Mica and Silicon Tapes of Class F and Above Insulation |
| 4135 | Porcelain/Composite Insulators for High Voltage Power Line/OHE |
| 4145 | Insulating Varnishes & Compounds |
| 4146 | Insulating Oils |
| 4150 | PTFE/Teflon Sheets and Insulators |
| 4155 | Porcelain Tubes, Blocks, Cleats and Connectors |
| 42. Items of General Electrical Wiring & Fittings |
| 4201 | Switchgears for Low Voltage Application: MCCB, MCB |
| 4205 | Switchgears for High Voltage Application: Circuit Breakers, Isolators, Interrupters |
| 4206 | Switches of all types including Special/ Modular, Rotary and Toggle types, Push Button/ Piano type, Low Water Alarm Switches, Temperature Switches, Pressure Switches etc. |
| 4207 | Protective Relays for Electrical Distribution/ Transmission Lines |
| 4208 | Tool Kits for Wireman & Electricians |
| 4210 | Fans for Home Service/Passenger Service, Air Circulator, Exhaust Fans, Blowers etc. including Regulators |
| 4214 | Conduit Pipes (PVC/GI/Steel), Flexible Metallic Tubes etc. for Wirings |
| 4216 | Electrical Lamps, Luminaire of sorts and sizes including Fluorescent Lamps, CFL, Mercury/Sodium/Metal Halide/LED Lamps for General Lighting |
| 4217 | Lamp Holders, Fittings & Accessories for General Lighting |
| 4219 | Electrical Floodlight Fittings, Tower Lights, Inflatable Lights and Accessories other than Carriage Fittings |
| 4223 | Neon Signs, LED Signs |
| 4226 | Bowl Glass Lenses of sorts |
| 4229 | Wire Terminals, Connectors and Allied Terminal Fitting |
| 4230 | Code Markers for Cables |
| 4232 | Battens, Casting Boards, Wooden Plugs |
| 4235 | Adapters, Sockets and Plugs of different varieties |
| 4238 | Wiring Clips |
| 4241 | Decorative Light Fixtures, Chandeliers |
| 4242 | Shades and Shade Parts |
| 43. All Instruments, Electrical Appliances and component Testing Instruments |
| 4305 | Electrical Measuring Instruments (Analog/Digital type): Voltmeter, Ammeters, Meggers, Potentio Meters, Kelvin Bridges, Galvanometers, Ohm Meters, Watt Meters, Energy Meters, Inductance & Capacitance Meters, Thermocouples, High Voltage/ Break Down Testers etc. |
| 4306 | All types of Measuring and Testing Equipment Required in Various Directorates of RDSO |
| 4307 | Accessories & Spare Parts for Trade Group 4306 |
| 4308 | Chemical Balances and Testing Equipment required in Chemical/Metallurgy Lab and their Spare Parts |
| 4309 | Optical Microscope for Metallurgical/Chemical Testing |
| 4310 | Electron Microscope |
| 4311 | Sensors: Speed, Temperature, Pressure, Strain, Optical/Laser & Load Cells |
| 4312 | Flaw Detectors-Ultrasonic for Rail and Axles & Wheels, Magnaflux, Radiography Charts for Recording Instruments. |
| 4313 | Automatic Ultrasonic Radial Scanning Machine, Parts and Spares |
| 4314 | Spectrometers (Absorption/Emission), Parts and Accessories |
| 4315 | Hardness Testing equipment, Parts, Jigs and Accessories |
| 4316 | Universal Testing Machine, Tensile Testing Machines, Compression Testing Machine, Fatigue Testing Machines, their Parts, Jigs and Accessories |
| 4317 | Appliances for Ventilation: Air Coolers, Room Air Conditioners their Spares |
| 4318 | Air Conditioning Plant for Buildings/offices, their Parts and Accessories |
| 4319 | Room Heaters, Geysers, Parts & Spares |
| 4320 | Refrigerators, Water Coolers |
| 4321 | Humidifiers, Air Curtains, Air Purifiers |
| 4325 | All Electrical Household Appliances, Accessories and Spares. |
| 4326 | Torches and other Appliances for Lighting |
| 45. Cell/Battery all types, Train lighting items of special nature and electrical amenities for Passengers |
| 4501 | 3 KW/ 4.5KW Alternators for Coaches |
| 4502 | Electronic Rectifier Cum Regulating Unit (ERRU) for 3 KW/4.5 KW Alternator |
| 4503 | 25 KW Alternators for Coaches |
| 4504 | Electronic Rectifier Cum Regulating Unit (ERRU) for 25 KW Alternator |
| 4505 | V-Belts for Driving Alternators for TL and AC Coaches |
| 4506 | Battery Charges for Coaches |
| 4507 | Inverters for Coaches |
| 4512 | Diesel Alternator Sets and Switchgears in Power Cars & Testing Cars |
| 4513 | Spares for the above (4512) |
| 4514 | Portable DG Sets, Diesel/Petrol/Kerosene Fuelled for Various Purposes |
| 4515 | Canopied DG Sets 8t Switchgears for Various Purposes |
| 4520 | Cell Dry for Torches and other Instruments. |
| 4522 | Cell Dry/ SITEL Cell for Telephone & Signalling Circuits. |
| 4523 | Li-Ion Batteries |
| 4524 | Lead Acid Cell/Battery (Low Maintenance/VRLA) for Rolling Stock (Loco, EMU & Coaches) and Stationary Installations |
| 4525 | Cell Connectors |
| 4526 | Power Banks |
| 4528 | Air Conditioning Equipments including RMPU and Spare Parts Pertaining to Rolling Stock only |
| 4529 | Control Panel for Roof Mounted AC Package Unit (RMPU) |
| 4530 | Microprocessor Controller for Roof Mounted AC Package Unit (RMPU) |
| 4531 | 415 V- 3 Phase Induction Motor for Roof Mounted AC Package Unit (RMPU) |
| 4532 | Dry type Air Filters for AC Coaches |
| 4533 | Silicon Rectifiers for Coaches, Parts and Spares |
| 4534 | Smoothing Reactor, Capacitor Bank for Rectifiers |
| 4535 | Control Panel for Ventilator Fan, Battery Charging and Radiator Fan |
| 4536 | Feeder Junction Box for Coaches |
| 4537 | Battery Fuse and Terminal Box for Coaches |
| 4538 | Switch Board Cabinet for AC Coaches, Parts and Accessories |
| 4539 | Centrifugal Blower Assembly & Blower for Coaches |
| 4540 | Pump Equipment with Controller for Coaches |
| 4541 | Tail Light LED type with Flasher & VHF Charging Socket |
| 4542 | Metal Oxide Gapless Lighting Arrester |
| 4545 | Solar Power systems grid, and its accessories and spares |
| 4546 | Solar appliances like solar lanterns, solar water heaters, solar cookers etc. |
| 4569 | Emergency Lighting System for Coaches |
| 4570 | Railway Carriage Fans, Parts and Spares |
| 4571 | Inter Vehicular (IV) Couplers, Parts and Spares for Coaches |
| 4572 | ZS Coupler, Parts and Spares for Coaches |
| 4573 | LED based Luminaire/Fittings for Coaches |
| 4574 | PA System for LHB Coaches |
| 4575 | GPS Based Passenger Information System for LHB AC Coaches |
| 4576 | Light Diffuser for LHB Coaches |
| 4577 | Wheel Set Earthing Equipment for LHB Coaches |
| 4578 | Inter Communication System for Coaches |
| 4579 | Roof Mounted Ventilation Units and it’s Spare Parts |
| 4580 | Roof Mounted Heating Units and it's Spare Parts |
| 4581 | Pantry Equipments |
| 4582 | Various Light Fittings and their Components like Ballasts (Copper/Electronic), Starters for Coaches |
| 4583 | T.L. Fittings and Spares not Included Elsewhere. |
| 4584 | Integrated Driver Desk for EMU/MEMU, Parts and Accessories |
| 46. Electric sub station, Transmission and distributions equipment |
| 4605 | Sub Station and Track Sectioning Equipments not classified else where |
| 4606 | Spare Parts for Substation Equipments of Trade Group 4605 |
| 4607 | Automatic Changeover Control Panel for Colour Light Signalling |
| 4609 | Rectifiers and their Spare Parts |
| 4612 | Isolators, Accessories and Spares |
