3321

Forging and Stamping

3322

Cutlery and Handtool Manufacturing

3323

Architectural and Structural Metals Manufacturing

This industry group comprises establishments primarily engaged in manufacturing one or more of the following: (1) prefabricated metal buildings, panels and sections; (2) structural metal products; (3) metal plate work products; (4) metal framed windows (i.e., typically using purchased glass) and metal doors; (5) sheet metal work; and (6) ornamental and architectural metal products.

3324

Boiler, Tank, and Shipping Container Manufacturing

This industry group comprises establishments primarily engaged in one of the following: (1) manufacturing power boilers and heat exchangers; (2) cutting, forming, and joining heavy gauge metal to manufacture tanks, vessels, and other containers; or (3) forming light gauge metal containers.

3325

Hardware Manufacturing

3326

Spring and Wire Product Manufacturing

3327

Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing

This industry group comprises establishments primarily engaged in one of the following: (1) operating machine shops primarily engaged in machining metal and plastic parts and parts of other composite materials on a job or order basis; (2) machining precision turned products; or (3) manufacturing metal bolts, nuts, screws, rivets, and other industrial fasteners.

3328

Coating, Engraving, Heat Treating, and Allied Activities

3329

Other Fabricated Metal Product Manufacturing

This industry group comprises establishments primarily engaged in manufacturing fabricated metal products (except forgings and stampings, cutlery and handtools, architectural and structural metals, boilers, tanks, shipping containers, hardware, spring and wire products, machine shop products, turned products, screws, and nuts and bolts).