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fscm 19207 p/n 12265774 nsn 1430010537202 used on p/n M901
wnut size 4-40 UNC-3B; shell size 22; NUT-Kayner mfg p/n MK7200 staking nut or equiv; steel; cadmium plated per QQ-P-416 ty 2 cl 3 fed spec; retainer PLATE-Alum alloy ty 2024-T3 per QQ-A-250/4 w/ chemical film treat. per MIL-C-5541
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).
Used on fscm 19207 p/n 12265774 nsn 1430010537202 p/n m901.