5310-01-197-6421, WASHER,FLAT

National Stock Number:
5310-01-197-6421

Federal Supply Class:
5310

National Item Identification Number:
011976421

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:

BACW10BP102AP	81205	THE BOEING COMPANY
BACW10BP102P	81205	THE BOEING COMPANY

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
HOLE DIAMETER	0.656 INCHES MINIMUM AND 0.667 INCHES MAXIMUM
OVERALL DIAMETER	1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-1872 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-18733 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8630 OR STEEL COMP 4130 OR STEEL COMP 4135 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2416 FED STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	NICKEL AND CADMIUM OVERALL
THICKNESS	0.073 INCHES MINIMUM AND 0.087 INCHES MAXIMUM

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