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al alloy 6061-T6, QQ-A-325, 1.490 min in. 1.500 max in. dia, 0.200 in. thk, 0.873 min in. 0.880 max in. w across flats of hex hole, 1 1/2-16UN-3A thd
Schedule B number: 7616106000
Threaded fasteners of aluminum
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).