NUT, BOLT OR SCREW MFG.

Footnote

This classification applies to the manufacture of threaded fasteners, including but not limited to nuts, bolts and screws, on a fee basis or as proprietary products.

Employers that do not specialize in nut, bolt or screw manufacturing but manufacture individual threaded fasteners for other concerns on a contract basis shall be classified as 3632, Machine Shops — N.O.C.

Manufacturing screw machine products, including but not limited to connectors, fittings, spacers, pins and bushings, on a fee basis or as proprietary products using fully automatic screw machines for some or all of the machining operations shall be classified as 3152(3), Screw Machine Products Mfg.

The manufacture of threaded aircraft fasteners by employers that are approved by the Federal Aviation Administration shall be classified as 3831, Machine Shops — aircraft components.

Steel making or rolling mills shall be separately classified.