Certain important segments of the metal fabricating industries are classified in other major groups, such as machinery in Major Groups 35 and 36; transportation equipment, including tanks, in Major Group 37; professional scientific and controlling instruments, watches, and clocks in Major Group 38; and jewelry and silverware in Major Group 39. Establishments primarily engaged in producing ferrous and nonferrous metals and their alloys are classified in Major Group 33.

Industry Group 341: Metal Cans And Shipping Containers Establishments primarily engaged in manufacturing metal cans from purchased materials. Establishments primarily engaged in manufacturing foil containers are classified in Industry 3497. Establishments primarily engaged in manufacturing metal shipping barrels drums, kegs, and pails.

Industry Group 342: Cutlery, Handtools, And General Hardware Establishments primarily engaged in manufacturing safety razors, razor blades, scissors, shears, and other cutlery of metal, except precious metal and table cutlery with handles of metal. Establishments primarily engaged in manufacturing precious metal cutlery and table cutlery with handles of metal are classified in Industry 3914; those manufacturing electric razors, knives, or scissors are classified in Industry 3634; those manufacturing hair clippers for human use are classified in Industry 3999 and for animal use in Industry 3523; and those manufacturing power hedge shears and trimmers are classified in Industry 3524. Establishments primarily engaged in manufacturing files and other hand and edge tools for metalworking, woodworking, and general maintenance. Establishments primarily engaged in manufacturing handsaws and saw blades are classified in Industry 3425; and those manufacturing metal cutting dies, power driven handtools, and attachments and accessories for machine tools are classified in Major Group 35. Establishments primarily engaged in manufacturing handsaws and saw blades for hand and power driven saws. Establishments primarily engaged In manufacturing power driven sawing machines are classified in Major Group 35. Establishments primarily engaged in manufacturing miscellaneous metal products usually termed hardware, not elsewhere classified. Establishments primarily engaged in manufacturing bolts and nuts are classified in Industry 3452; those manufacturing nails and spikes are classified in Major Group 33, those manufacturing cutlery are classified in Industry 3421; those manufacturing handtools are classified in Industry 3423; and those manufacturing pole line and transmission hardware are classified in Industry Group 364.

Industry Group 343: Heating Equipment, Except Electric And Warm Air; Establishments primarily engaged in manufacturing enameled iron, cast iron, or pressed metal sanitary ware. Establishments primarily engaged in manufacturing plastics plumbing fixtures are classified in Industry 3088; those manufacturing vitreous and semivitreous pottery sanitary ware are classified in Industry 3261; and those manufacturing porcelain enameled kitchen, household, and hospital ware are classified in Industry 3469. Establishments primarily engaged in manufacturing metal plumbing fixture fittings and trim. Also included in this industry are establishments engaged in the assembly of plastics components into plumbing fixture fittings. Establishments primarily engaged in the manufacture of steam or water line valves are classified in Industry Group 349. Establishments primarily engaged in manufacturing china and earthenware plumbing fixture fittings are classified in Industry 3261, and those manufacturing plastics plumbing fixture components are classified in Industry 3089.

Establishments primarily engaged in manufacturing heating equipment, except electric and warm air furnaces, including gas, oil, and stoker coal fired equipment for the automatic utilization of gaseous, liquid, and solid fuels. Establishments primarily engaged in manufacturing warm air furnaces are classified in Industry 3585; cooking stoves and ranges are classified in Industry 3631; boiler shops primarily engaged in the production of industrial, power, and marine boilers are classified in Industry 3443; and those manufacturing industrial process furnaces and ovens are classified in Industry 3567.

Industry Group 344: Fabricated Structural Metal Products Establishments primarily engaged in fabricating iron and steel or other metal for structural purposes, such as bridges, buildings, and sections for ships, boats, and barges. Establishments primarily engaged in manufacturing metal doors, sash, frames, molding, and trim are classified in Industry 3442; and establishments doing fabrication work at the site of construction are classified in Division C, Construction. Establishments primarily engaged in manufacturing ferrous and nonferrous metal doors, sash, window and door frames and screens, molding, and trim. Establishments primarily engaged in manufacturing metal covered wood doors, windows, sash, door frames, molding, and trim are classified in Industry 2431. Establishments primarily engaged in manufacturing power and marine boilers, pressure and nonpressure tanks, processing and storage vessels, heat exchangers, weldments and similar products, by the process of cutting, forming and joining metal plates, shapes, bars, sheet, pipe mill products and tubing to custom or standard design, for factory or field assembly. Establishments primarily engaged in manufacturing warm air heating furnaces are classified in Industry 3585; those manufacturing other nonelectric heating apparatus, except power boilers, are classified in Industry 3433; those manufacturing household cooking apparatus are classified in Industry 3631; and those manufacturing industrial process furnaces and ovens are classified in Industry 3567. Establishments primarily engaged in manufacturing sheet metal work for buildings (not including fabrication work done by construction contractors at the place of construction), and manufacturing stovepipes, light tanks, and other products of sheet metal. Establishments primarily engaged in manufacturing architectural and ornamental metal work, such as stairs and staircases, open steel flooring (grating), fire escapes, grilles, railings, and fences and gates, except those made from wire. Establishments primarily engaged in manufacturing fences and gates from purchased wire are classified in Industry 3496; those manufacturing prefabricated metal buildings and parts are classified in Industry 3448; and those manufacturing miscellaneous metal work are classified in Industry 3449. Establishments primarily engaged in manufacturing portable and other prefabricated metal buildings and parts and prefabricated exterior metal panels. Establishments primarily engaged in manufacturing miscellaneous structural metal work, such as metal plaster bases, fabricated bar joists, and concrete reinforcing bars. Also included in this industry are establishments primarily engaged in custom roll forming of metal.

Industry Group 345: Screw Machine Products, And Bolts, Nuts, Screws, Rivets, And Washers Establishments primarily engaged in manufacturing automatic or hand screw machine products from rod, bar, or tube stock of metal, fiber, plastics or other material. The products of this industry consist of a wide variety of unassembled parts and are usually manufactured on a job or order basis. Establishments included in this industry may perform assembly of some parts manufactured in the same establishment, but establishments primarily engaged in producing assembled components are classified according to the nature of the components. Establishments primarily engaged in manufacturing standard bolts, nuts, rivets, screws, and other industrial fasteners on headers, threaders, and nut forming machines are classified in Industry 3452. Establishments primarily engaged in manufacturing metal bolts, nuts, screws, rivets, washers, formed and threaded wire goods, and special industrial fasteners. Rolling mills engaged in manufacturing similar products are classified in Major Group 33; establishments primarily engaged in manufacturing screw machine products are classified in Industry 3451; and those manufacturing plastics fasteners are classified in Industry 3089.

Industry Group 346: Metal Forgings And Stampings Establishments primarily engaged in manufacturing iron and steel forgings, with or without the use of dies. Establishments primarily engaged in manufacturing nonferrous forgings, with or without the use of dies. Establishments primarily engaged in manufacturing automotive stampings, such as body parts, hubs, and trim. Establishments primarily engaged in manufacturing metal crowns and closures. Establishments primarily engaged in manufacturing metal stampings and spun products, not elsewhere classified, including porcelain enameled products. Products of this industry include household appliance housings and parts; cooking and kitchen utensils; and other nonautomotive job stampings.

Industry Group 347: Coating, Engraving, And Allied Services Establishments primarily engaged in all types of electroplating, plating, anodizing, coloring, and finishing of metals and formed products for the trade. Also included in this industry are establishments which perform these types of activities, on their own account, on purchased metals or formed products. Establishments that both manufacture and finish products are classified according to the products. Establishments primarily engaged in performing the following types of services on metals, for the trade: (1) enameling, lacquering, and varnishing metal products; (2) hot dip galvanizing of mill sheets, plates and bars, castings, and formed products fabricated of iron and steel; hot dip coating such items with aluminum, lead, or zinc; retinning cans and utensils; (3) engraving, chasing and etching jewelry, silverware, notarial and other seals, and other metal products for purposes other than printing; and (4) other metal services, not elsewhere classified. Also included in this industry are establishments which perform these types of activities on their own account on purchased metals or formed products. Establishments that both manufacture and finish products are classified according to the products.

Industry Group 348: Ordnance And Accessories, Except Vehicles And Guided Missiles Establishments primarily engaged in manufacturing ammunition for small arms having a bore of 30 mm. (or 1.18 inch) or less. Establishments primarily engaged in manufacturing ammunition, except for small arms, are classified in Industry 3483; those manufacturing blasting and detonating caps and safety fuses are classified in Industry 2892; and those manufacturing fireworks are classified in Industry 2899. Establishments primarily engaged in manufacturing ammunition, not elsewhere classified, or in loading and assembling ammunition more than 30 mm. (or more than 1.18 inch), including component parts. This industry also includes establishments primarily engaged in manufacturing bombs, mines, torpedoes, grenades, depth charges, chemical warfare projectiles, and their component parts. Establishments primarily engaged in manufacturing small arms ammunition are classified in Industry 3482; those manufacturing explosives are classified in Industry 2892; and those manufacturing military pyrotechnics are classified in Industry 2899. Establishments primarily engaged in manufacturing small firearms having a bore 30 mm. (or 1.18 inch) or less, and parts for small firearms. Also included in this industry are establishments primarily engaged in manufacturing certain weapons more than 30 mm. which are carried and employed by the individual, such as grenade launchers and heavy field machine guns. Establishments primarily engaged in manufacturing artillery and mortars having a bore more than 30 mm. (or more than 1.18 inch), and component parts, are classified in Industry 3489. Establishments primarily engaged in manufacturing ordnance and accessories, not elsewhere classified, such as naval, aircraft, antiaircraft, tank, coast, and field artillery having a bore more than 30 mm. (or more than 1.18 inch), and components. Establishments primarily engaged in manufacturing small arms and parts 30 mm. (or 1.18 inch) or less are classified in Industry 3484; those manufacturing tanks are classified in Industry 3795; and those manufacturing guided missiles are classified in Industry Group 376.

Industry Group 349: Miscellaneous Fabricated Metal Products Establishments primarily engaged in manufacturing industrial valves. Establishments primarily engaged in manufacturing fluid power valves are classified in Industry 3492; those manufacturing plumbing fixture fittings and trim are classified in Industry 3432; and those manufacturing plumbing and heating valves are classified in Industry 3494. Establishments primarily engaged in manufacturing hydraulic and pneumatic valves, hose and tube fittings, and hose assemblies for fluid power systems. Establishments primarily engaged in manufacturing fluid power cylinders are classified in Industry 3593; those manufacturing fluid power pumps are classified in Industry 3594; and those manufacturing hydraulic intake and exhaust motor vehicle valves are classified in Industry 3592. Establishments primarily engaged in manufacturing leaf springs, hot wound springs, and coiled flat springs. Establishments primarily engaged in manufacturing wire springs are classified in Industry 3495. Establishments primarily engaged in manufacturing metal valves and pipe fittings, not elsewhere classified, such as plumbing and heating valves, and pipe fittings, flanges, and unions, except from purchased pipes. Establishments primarily engaged in manufacturing plastics pipe fittings are classified in Industry 3089; those manufacturing plumbing fixture fittings and trim are classified in Industry 3432; and those manufacturing fittings and couplings for garden hose are classified in Industry 3429. Establishments primarily engaged in manufacturing fluid power valves are classified in Industry 3492, and those manufacturing other industrial valves are classified in Industry 3491. Establishments primarily engaged in fabricating pipe fittings from purchased metal pipe by processes such as cutting, threading, and bending are classified in Industry 3498. Establishments primarily engaged in manufacturing wire springs from purchased wire. Establishments primarily engaged in assembling wire bedsprings or seats are classified in Major Group 25. Establishments primarily engaged in manufacturing miscellaneous fabricated wire products from purchased wire, such as non-insulated wire rope and cable; fencing; screening, netting, paper machine wire cloth; hangers, paper clips, kitchenware, and wire carts. Rolling mills engaged in manufacturing wire products are classified in Major Group 33. Establishments primarily engaged in manufacturing steel nails and spikes from purchased wire or rod are classified in Industry 3315; those manufacturing nonferrous wire nails and spikes from purchased wire or rod are classified in Industry 3399; those drawing and insulating nonferrous wire are classified in Industry 3357; and those manufacturing wire springs are classified in Industry 3495. Establishments primarily engaged in manufacturing gold, silver, tin, and other metal foil (including converted metal foil) and leaf. Also included are establishments primarily engaged in converting metal foil (including aluminum) into wrappers, cookware, dinnerware, and containers, except bags and liners. Establishments primarily engaged in manufacturing plain aluminum foil are classified in Industry 3353. Establishments primarily engaged in fabricating pipe and pipe fittings from purchased metal pipes by processes such as cutting, threading, and bending. Establishments primarily engaged in manufacturing cast iron pipe and fittings, including cast and forged pipe fittings which have been machined and threaded, are classified in Industry 3321; those manufacturing welded and heavy riveted pipe and seamless steel pipe are classified in Industry 3317; and those manufacturing products such as banisters, railings, and guards from pipe are classified in Industry 3446. Establishments primarily engaged in manufacturing fabricated metal products, not elsewhere classified, such as fire or burglary resistive steel safes and vaults and similar fire or burglary resistive products; and collapsible tubes of thin flexible metal. Also included are establishments primarily engaged in manufacturing metal boxes, metal ladders, and metal household articles, such as ice cream freezers and ironing boards. Establishments primarily engaged in manufacturing concrete burial vaults are classified in Industry 3272, and metal burial vaults are classified in Industry 3995. Establishments primarily engaged in manufacturing advertising novelties are classified in Industry 3993.

The following table represents only the potential occupational health concerns related to the entire stone, clay, glass, and concrete products industry based on job task or work activity, and any related OSHA standards for regulatory compliance. The information presented does not indicate or suggest a relative risk of exposure based on the location within the table nor provide any exposure information. Health risks associated with fatigue, working long hours, stress living away from home, and other psychosocial disorders are not addressed.

The focus of this information is to provide guidance to understand the occupational health hazards from chemical substances, physical and biological agents, radiological, ergonomic, and environmental hazards from exposure to plants and animals. Potential occupational health exposures in this industry were contrived from the OSHA Integrated Management Information System database between 1984 to 2020. Additional information was obtained from the National Institute for Occupational Safety and Health (NIOSH) Health Hazard Evaluations performed by request of employee representatives and organizations from 1973 to 2020.

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