3020-01-155-0056 INACTIVE Index 5310-01-155-0058 WASHER,LOCK

National Stock Number:
5310-01-155-0057

Federal Supply Class:
5310

National Item Identification Number:
011550057

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:
1050173856161GENERAL DYNAMICS LAND SYSTEMS - CANADA CORPORATION
1241796319207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
12417963-014076M6BAE SYSTEMS LAND & ARMAMENTS L.P.
12417963-0140FW39BAE SYSTEMS TACTICAL VEHICLE SYSTEMS LP
12417963-01419207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
DIN1440-A3L-22D8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER22.0 MILLIMETERS NOMINAL
OVERALL DIAMETER34.0 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDIN 267 MFR REF ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THICKNESS4.0 MILLIMETERS NOMINAL


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