National Item Identification Number

00-870-2798

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)

---

05606

---

GENERAL DYNAMICS ARMAMENT AND
TECHNICAL PRODUCTS INC.
128 LAKESIDE AVE
BURLINGTON
VT
05401
802-657-6109

---

Reference Numbers (Part Numbers)

135B5331

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
STYLE DESIGNATOR
HOLE DIAMETER;

Required Description

STEEL COMP 4130 OVERALL
MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL;