National Item Identification Number

01-178-0212

National Stock Number

Item Name

WASHER,SHOULDERED

Federal Supply Class

5310

Description

A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use BEARING, SLEEVE; BUSHING SLEEVE; or SPACER, SLEEVE. Excludes INSULATOR, WASHER and thrust type washers.

Commercial and Government Entity Code (Supplier Data)

---

13002

---

---

Reference Numbers (Part Numbers)

1881B295

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT DOCUMENT AND C

Required Description

ALUMINUM ALLOY 7075 OVERALL
QQ-A-225/9,T73 FED SPEC SINGLE MATERIAL RESPONSE OV