National Item Identification Number
00-424-7180
National Stock Number
Item Name
WASHER,RECESSED
Federal Supply Class
5310
Description
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)
29510
31007
92679
29510
92679
29510
31007
92679
Reference Numbers (Part Numbers)
25090DD
25090DD
25090DD
3H1918G58
3H1918G58
67227D
67227D
67227D
Required Categories
MATERIAL
HARDNESS RATING
STYLE DESIGNATOR
HOLE DIAMETER
OUTSIDE DIAMETER
OV
Required Description
COPPER ALLOY OVERALL
30.0 ROCKWELL B MINIMUM AND
50.0 ROCKWELL B MAXIMUM
16 R