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steel, corrosion resisting, QQ-S-766, comp 3O4; 1.400 in. lg, 0.400 in. wide, 0.500 in. stock thk; 2 holes 0.189 in. dia (no. 12) , 82 deg csk x .340 in dia., 1.000 porm 0.005 in c toc; 1 hole 0.201 in. dia (no. 7) , 90 deg csk x 0.250 in. dia, 0.250-20 UNC-2B, centered between other 2 holes
FSC 5310 ⁓ Nuts and washers
Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.
Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).