Serving our customers with quality and safety first.
mwasher recessed and slotted, matl steel per QQ-S-698, 0.8437 in. od, 0.2187 in. thk, slot 0.658 in. lg, 0.158 in w, rockwell C57 min, C65 max, zinc plated QQ-Z-325 type 2 class 3, alternate plating QQ-P-416 type 2 class 3
Schedule B number: 7318220000
nmfc 194160
Washers other than lock washers, 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).