5310-01-556-5374 WASHER,LOCK Index 5310-01-557-6203 WASHER,FLAT

National Stock Number:
5310-01-557-0841

Federal Supply Class:
5310

National Item Identification Number:
015570841

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:
1001905961C19MIL-COTS CORPORATION
12759-000910Y3H3FASTENAL COMPANY
30117030B9F4RKR TECHNOLOGIES, LTD.
30117031EFH8GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC.
30117033T063MOTOR CITY FASTENERS INC
30117034JEL0REXEL USA, INC.
384060Y3H3FASTENAL COMPANY
40016081EFH8GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC.
S0000241EFH8GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC.
301170357550RELLI TECHNOLOGY, INC
30117037W356GENERAL DYNAMICS LAND SYSTEMS INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER13.00 MILLIMETERS MINIMUM AND 13.30 MILLIMETERS MAXIMUM
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSNPAC
OVERALL DIAMETER36.38 MILLIMETERS MINIMUM AND 37.00 MILLIMETERS MAXIMUM
SPECIAL FEATURES12MM ID X 37MM OD DIN 9021 ZINC PLATED FENDER WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTMB633, SC1 TYPE 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
THICKNESS2.70 MILLIMETERS MINIMUM AND 3.30 MILLIMETERS MAXIMUM


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