National Item Identification Number
01-102-6105
National Stock Number
Item Name
WASHER,RECESSED
Federal Supply Class
5310
Referenced on: http://flightsafety.tpub.com//TB-1-1520-237-20-237/TB-1-1520-237-20-2370005.htmDescription
A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.
Commercial and Government Entity Code (Supplier Data)
78286
Reference Numbers (Part Numbers)
SS5103C06
Required Categories
STYLE DESIGNATOR
HOLE DIAMETER
OUTSIDE DIAMETER
RECESS DIAMETER
MATERIAL THI
Required Description
15 RECESS
0.378 INCHES MINIMUM AND
0.388 INCHES MAXIMUM
0.687 INCHES NOMINAL;