National Item Identification Number

01-326-1053

National Stock Number

Item Name

WASHER,FLAT

Federal Supply Class

5310

Referenced on: http://constructionmisc.tpub.com//TM-5-3825-230-14P/css/TM-5-3825-230-14P_578.htm
Referenced on: http://constructionmisc.tpub.com//TM-5-3825-230-14P/css/TM-5-3825-230-14P_593.htm
Referenced on: http://constructionmisc.tpub.com//TM-5-3825-230-14P/css/TM-5-3825-230-14P_619.htm

Description

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Commercial and Government Entity Code (Supplier Data)

---

66234

---

M-B COS INC
DBA
1615 WISCONSIN AVE
NEW HOLSTEIN
WI
53061
920-898-4203

---

NSN (National Stock Number) 5310-01-326-1053, 5310013261053 NIIN (National Identification Number) 01-326-1053, 013261053

Part Numbers (Reference Numbers)

401-94233

Required Categories

MATERIAL
PERIPHERAL SHAPE STYLE
WIDTH ACROSS FLATS
CENTER HOLE SHAPE STYLE
C

Required Description

STEEL OVERALL
10 SQUARE
2.000 INCHES NOMINAL
9 SQUARE
0.775 INCHES MINIMUM A