5310-14-316-1881, WASHER,FLAT

National Stock Number:
5310-14-316-1881

Federal Supply Class:
5310

National Item Identification Number:
143161881

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:

23111BC040LE	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
23111BC040LE	F0111	BUREAU NORMALISATION AERONAUTIQUEESPACE
L23111-40BCLE	F0111	BUREAU NORMALISATION AERONAUTIQUEESPACE
23111BC040LE	F0188	BLANC AERO INDUSTRIES - GROUPE LISIAEROSPACE
23111BC040LE	F6760	DEMAT SA
23111BC040LE	F7411	MECAERO ARCONIC FASTENING SYSTEMS AND RINGS TOULOUSE

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	4.25 MILLIMETERS MINIMUM AND 4.43 MILLIMETERS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	F0111 MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 35NC6 OVERALL
III HEAT TREATMENT	AS FABRICATED
III MINIMUM TENSILE STRENGTH	880 NEWTONS PER SQUARE MILLIMETER
III MINIMUM YIELD STRENGTH	740 NEWTONS PER SQUARE MILLIMETER
PERIPHERAL SHAPE STYLE	ROUND
OVERALL DIAMETER	ERR-090
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NF L 09-753 CODE LE NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL AND CHROMATE OVERALL
THICKNESS	0.8 MILLIMETERS NOMINAL

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