5310-00-857-2896, WASHER,FLAT

National Stock Number:
5310-00-857-2896

Federal Supply Class:
5310

National Item Identification Number:
008572896

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:

12-10418

99167

HAMILTON SUNDSTRAND CORPORATION

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER	0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM
OVERALL DIAMETER	0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP E4340 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SPECIAL FEATURES	DECORATIVE PLATING,SATIN FINISH ON ONE BEARING SIDE ONLY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CHROMIUM OVERALL
THICKNESS	0.1255 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM

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