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0.220in. and 0.226in. ⁓15/64"
0.440in.
0.100in.
radius 0.220 in. min 0.226 in. max
QQ-B-636 fed spec single material response
convex
Convex
0.100 inches
0.440 inches
0.220 inches minimum and 0.226 inches maximum
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).
convex radius 0.220 in. min 0.226 in. max 0.100" material thickness 0.440" outside diameter 0.220" hole diameter
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A washer which is round with a centrally located hole. one bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is raised to form a curved or spherical contour. see also washer (1), concave. excludes bearing, washer thrust.