| PSC | Description
|
| 3405 | Saws and Filing Machines |
| 3408 | Machining Centers and Way-type Machines |
| 3410 | Electrical and Ultrasonic Erosion Machines |
| 3411 | Boring Machines |
| 3412 | Broaching Machines |
| 3413 | Drilling and Tapping Machines |
| 3414 | Gear Cutting and Finishing Machines |
| 3415 | Grinding Machines |
| 3416 | Lathes |
| 3417 | Milling Machines |
| 3418 | Planers and Shapers |
| 3419 | Miscellaneous Machine Tools |
| 3422 | Rolling Mills and Drawing Machines |
| 3424 | Metal Heat Treating and Non-thermal Treating Equipment |
| 3426 | Metal Finishing Equipment |
| 3431 | Electric Arc Welding Equipment |
| 3432 | Electric Resistance Welding Equipment |
| 3433 | Gas Welding, Heat Cutting, and Metalizing Equipment |
| 3436 | Welding Positioners and Manipulators |
| 3438 | Miscellaneous Welding Equipment |
| 3439 | Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| 3441 | Bending and Forming Machines |
| 3442 | Hydraulic and Pneumatic Presses, Power Driven |
| 3443 | Mechanical Presses, Power Driven |
| 3444 | Manual Presses |
| 3445 | Punching and Shearing Machines |
| 3446 | Forging Machinery and Hammers |
| 3447 | Wire and Metal Ribbon Forming Machines |
| 3448 | Riveting Machines |
| 3449 | Miscellaneous Secondary Metal Forming and Cutting Machines |
| 3450 | Machine Tools, Portable |
| 3455 | Cutting Tools For Machine Tools |
| 3456 | Cutting and Forming Tools For Secondary Metalworking Machinery |
| 3460 | Machine Tool Accessories |
| 3461 | Accessories For Secondary Metalworking Machinery |
| 3465 | Production Jigs, Fixtures, and Templates |
| 3470 | Machine Shop Sets, Kits, and Outfits |