5310-01-155-9823, WASHER,FLAT

National Stock Number:
5310-01-155-9823

Federal Supply Class:
5310

National Item Identification Number:
011559823

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:

BACW10DH-4	81205	THE BOEING COMPANY
BACW10DH4	A0126	LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER	0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
OVERALL DIAMETER	0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4130 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SPECIFICATION/STANDARD DATA	81205-BACW10DH MANUFACTURERS STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THICKNESS	0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM

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