- 3053 - Gaskets, Packing & Sealing Devices (5 Companies)
- 3069 - Fabricated Rubber Products (13 Companies)
- 3083 - Laminated Plastic Plate, Sheet & Shapes (4 Companies)
- 3089 - Plastics Products (35 Companies)
- 3199 - Leather Goods (5 Companies)
- 3211 - Flat Glass (10 Companies)
- 3221 - Glass Containers (1 Company)
- 3231 - Products Of Purchased Glass (1 Company)
- 3253 - Ceramic Wall Update Master_sic Tile (1 Company)
- 3255 - Clay Refractories (7 Companies)
- 3272 - Concrete Products (6 Companies)
- 3273 - Ready Mixed Concrete (7 Companies)
- 3292 - Asbestos Products (2 Companies)
- 3299 - Nonmetallic Mineral Products (3 Companies)
- 3312 - Blast Furnaces And Steel Mills (9 Companies)
- 3315 - Steel Wiredrawing, Nails & Spikes (2 Companies)
- 3316 - Cold Finishing Of Steel Shapes (2 Companies)
- 3321 - Gray & Ductile Iron Foundries (2 Companies)
- 3369 - Nonferrous Foundries (7 Companies)
- 3398 - Metal Heat Treating (1 Company)
- 3421 - Cutlery (3 Companies)
- 3423 - Hand & Edge Tools (2 Companies)
- 3429 - Hardware, Nec (2 Companies)
- 3432 - Plumbing Fixture Fittings & Trim (12 Companies)
- 3433 - Heating Equipment, Except Electric (2 Companies)
- 3441 - Fabricated Structural Metal (6 Companies)
- 3443 - Fabricated Plate Work (Boiler Shops) (17 Companies)
- 3444 - Sheet Metalwork (53 Companies)
- 3446 - Architectural Metalwork (11 Companies)
- 3448 - Prefabricated Metal Buildings & Components (7 Companies)
- 3451 - Screw Machine Products (1 Company)
- 3469 - Metal Stampings (3 Companies)
- 3471 - Plating And Polishing (23 Companies)
- 3479 - Metal Coating & Allied Services (32 Companies)
- 3491 - Industrial Valves (7 Companies)
- 3495 - Wire Springs (2 Companies)
- 3496 - Miscellaneous Fabricated Wire Products (4 Companies)
- 3498 - Fabricated Pipe & Fittings (8 Companies)
- 3499 - Fabricated Metal Products (1 Company)
- 3519 - Internal Combustion Engines (9 Companies)
- 3523 - Farm Machinery And Equipment (1 Company)
- 3533 - Oil And Gas Field Machinery And Equipment (1 Company)
- 3541 - Machine Tools, Metal Cutting Type (2 Companies)
- 3542 - Machine Tools, Metal Forming Type (1 Company)
- 3543 - Industrial Patterns (3 Companies)
- 3544 - Special Dies, Tools, Jigs, And Fixtures (7 Companies)
- 3545 - Machine Tool Accessories (6 Companies)
- 3553 - Woodworking Machinery (3 Companies)
- 3556 - Food Products Machinery (3 Companies)