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National Stock Number:
5310-01-171-0588
Federal Supply Class:
5310
National Item Identification Number:
011710588
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.
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Manufacturer Information:
| 10110029 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | ST4M144-03013 | 23294 | AVALON MACHINE PRODUCTS INC | | ST4M144-03013 | 59563 | REID PRODUCTS INC. | | ST4M144-03013 | 65910 | MAYDAY MANUFACTURING CO. | | ST4M144-03013 | 70265 | ALL POWER MANUFACTURING CO. | | ST4M144-03013 | 76301 | THE BOEING COMPANY | | ST4M144-03013 | K0763 | ATLAS COPCO CONSTRUCTION & MINING LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.1900 INCHES MINIMUM AND 0.1915 INCHES MAXIMUM | | OVERALL DIAMETER | 0.3131 INCHES MINIMUM AND 0.3136 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 630 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | COLOR GOLD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THICKNESS | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
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