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material steel cres class 303 cond a per QQ-S-764, hexagon shape, width across flats 1.000 in. nom, over all length 1.690 in. nom, one end 0.625-18 UNF-3B right hand thread, other end 0.625-18 UNF-3B left hand thread, each thread 0.750 in. deep, center portion undercut to root dia deep and 0.180 in. wide, two holes 0.125 in. min and 0.129 in. max drilled thru flats 0.240 in. from ends
1EA
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).