5310-01-031-8368, WASHER,FLAT

National Stock Number:
5310-01-031-8368

Federal Supply Class:
5310

National Item Identification Number:
010318368

Description:
WASHER,FLAT

Detail:
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.

Manufacturer Information:

2498562-2

10001

NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CRITICALITY CODE JUSTIFICATION	ZZZW
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
DEPARTURE FROM CITED DOCUMENT	AS DIFFERENTIATED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPEDO
HARDNESS RATING	27.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
HOLE DIAMETER	0.857 INCHES MINIMUM AND 0.859 INCHES MAXIMUM
OVERALL DIAMETER	1.375 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION	AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4140H OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	OXIDE FILM OVERALL
THICKNESS	0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM

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