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SIC 3451 Screw Machine Products
SIC 3451
This category includes 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 SIC 3452: Bolts, Nuts, Screws, Rivets, and Washers.
332721
Precision Tuned Product Manufacturing
According to the Precision Machine Products Association (formerly the National Screw Machine Products Association), during the mid-2000s more than 1,500 companies employed more than 42,000 highly skilled workers throughout North America. These companies utilized traditional methods combined with cutting-edge technologies, such as automatic screw machines, computer-controlled (CNC) single- and multiple-spindle lathes and CNC turning and machining centers, to manufacture billions of component parts to precise specifications. This industry machined components used in a multitude of end products, including anti-lock brakes, transmissions, fuel injection systems, car airbags, computer hard drives, video recording equipment, medical diagnostic equipment, and power tools, to name just a few.
The screw machine products industry is defined more by the process of manufacture than by any specific product. Although screw machine products manufacturers produce a wide variety of products for many types of industries, they all use a variation on the screw machine—a large, usually cam-driven piece of machinery that allows roughly cylindrical material to be subjected to a variety of tooling and machining operations as the material is turned about its axis. Screw machines may have as many as eight spindles that act upon the part being machined, and are able to produce highly precise parts quickly. The screw machine, by ensuring the interchangeability of manufactured parts, was a major contributor to the development of modern manufacturing and assembly processes.
Screw machine products manufacturers are located primarily in the industrialized sectors of the Northeast and Midwest and near aerospace manufacturers in the West. The industry is dominated by smaller companies employing fewer than 50 workers, most of whom are highly skilled machinists. Many of the shops are privately owned, and most are located close to the industries to which they supply parts. In addition, many larger companies that use screw machine products manufacture those products in-house. The automotive industry is the major purchaser of screw machine products and accounts for 30 percent of the industry's shipments, which totaled $8.5 billion in 2003.
The vast majority of screw machine products...
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- Fabricated Metal Products, Except Machinery and Transportation Equipment
- SIC 3411 Metal Cans
- SIC 3412 Metal Shipping Barrels, Drums, Kegs, and Pails
- SIC 3421 Cutlery
- SIC 3423 Hand and Edge Tools, Except Machine Tools and Handsaws
- SIC 3425 Saw Blades and Handsaws
- SIC 3429 Hardware, Not Elsewhere Classified
- SIC 3431 Enameled Iron and Metal Sanitary Ware
- SIC 3432 Plumbing Fixtures and Fittings
- SIC 3433 Heating Equipment, Except Electric and Warm Air Furnaces
- SIC 3441 Fabricated Structural Metal
- SIC 3442 Metal Doors, Sash, Frames, Molding, and Trim
- SIC 3443 Fabricated Plate Work—Boiler Shops
- SIC 3444 Sheet Metal Work
- SIC 3446 Architectural and Ornamental Metal Work
- SIC 3448 Prefabricated Metal Buildings and Component Manufacturing
- SIC 3449 Miscellaneous Structural Metal Work
- SIC 3451 Screw Machine Products
- SIC 3452 Bolts, Nuts, Screws, Rivets, and Washers
- SIC 3462 Iron and Steel Forgings
- SIC 3463 Nonferrous Forgings
- SIC 3465 Automotive Stampings
- SIC 3466 Crowns and Closures
- SIC 3469 Metal Stampings, Not Elsewhere Classified
- SIC 3471 Electroplating, Plating, Polishing, Anodizing, and Coloring
- SIC 3479 Coating, Engraving, and Allied Services, Not Elsewhere Classified
- SIC 3482 Small Arms Ammunition
- SIC 3483 Ammunition, Except for Small Arms
- SIC 3484 Small Arms
- SIC 3489 Ordnance and Accessories, Not Elsewhere Classified
- SIC 3491 Industrial Valves
- SIC 3492 Fluid Power Valves and Hose Fittings
- SIC 3493 Steel Springs, Except Wire
- SIC 3494 Valves and Pipe Fittings, Not Elsewhere Classified
- SIC 3495 Wire Springs
- SIC 3496 Miscellaneous Fabricated Wire Products
- SIC 3497 Metal Foil and Leaf
- SIC 3498 Fabricated Pipe and Pipe Fittings
- SIC 3499 Fabricated Metal Products, Not Elsewhere Classified
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