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National Stock Number:
5310-01-563-5517
Federal Supply Class:
5310
National Item Identification Number:
015635517
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:
| 198-1725 | 11083 | CATERPILLAR INC | | 7X-0579 | 11083 | CATERPILLAR INC |
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Techincal Specification:
| COLOR | BLACK OVERALL | | OUTSIDE DIAMETER | 1.004 INCHES NOMINAL | | OVERALL DIAMETER | 0.346 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER | | SPECIAL FEATURES | WASHER-HARD (8.8X25.5X2-M THK) | | SUPPLEMENTARY FEATURES | MATERIAL: HARDENED STEEL; FITS BOLT SIZES: 5/16"; COATING: ZINC FLAKE OFFERS MEDIUM TO HIGH CORROSION PROTECTION AND REPEATABLE ASSEMBLY PERFORMANCE VIA BUILT IN LUBRICATION; SALT SPRAY RESISTANCE OF 720 HOURS TO RED RUST; COATING COLOR: BLACK (M12 AND SMALLER); GREY (LARGER THAN M12) | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.079 INCHES NOMINAL |
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