5310-01-040-0428, WASHER,FLAT

5935-01-040-0431 SOCKET,PLUG-IN ELECTRONIC COMPON

National Stock Number:
5310-01-040-0428

Federal Supply Class:
5310

National Item Identification Number:
010400428

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:

2505604-7	10001	NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
2505604-7	53711	NAVAL SEA SYSTEMS COMMAND

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CRITICALITY CODE JUSTIFICATION	ZZZW
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
DEPARTURE FROM CITED DOCUMENT	AS MODIFIED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPEDO
HARDNESS RATING	27.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
HOLE DIAMETER	0.315 INCHES MINIMUM AND 0.321 INCHES MAXIMUM
OVERALL DIAMETER	0.472 INCHES MINIMUM AND 0.478 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	AISI4130 ASSN STD 1ST MATERIAL RESPONSE OR AISI4140H ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4130 OR STEEL COMP 4140H OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYP 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THICKNESS	0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM

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