Serving our customers with quality and safety first.
cres, united aircraft corp spec no. HS178, 0.165 in. min, 0.175 in. max O-A lg, internal thread data, 10-32 UNF-3B, csk 90 deg, 0.228 in. min, 0.232 in. max id, external thread data, 3/8-32 NEF-3A, 0.320 in. min, 0.330 in. max od, rockwell hardness rating for core RC31-39, 1000vh min for case
1EA
Schedule B number: 7318160000
nmfc 093486
Nuts of iron or steel
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).