5310-01-553-4278, WASHER,FLAT

6660-01-553-4279 BAROMETER,DIGITAL DISPLAY

National Stock Number:
5310-01-553-4278

Federal Supply Class:
5310

National Item Identification Number:
015534278

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:

9019989

18876

U S ARMY AVIATION AND MISSILE COMMAND

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.128 INCHES MINIMUM AND 0.129 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-362, T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	ALUMINUM ALLOY 2024 OVERALL
III PART NAME ASSIGNED BY CONTROLLING AGENCY	THRUST WASHER
PERIPHERAL SHAPE STYLE	ROUND
PROPRIETARY CHARACTERISTICS	PACS
OVERALL DIAMETER	0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CHROMATE OVERALL
THICKNESS	0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM

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