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National Stock Number:
5310-99-957-8629
Federal Supply Class:
5310
National Item Identification Number:
999578629
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:
| BS3410 TABLE 4 | K7766 | BRITISH STANDARDS INSTITUTION | | G202/6041 ITEM 14 | K7705 | KNDS DEFENCE UK LIMITED | | G202/6041/14 | K7705 | KNDS DEFENCE UK LIMITED | | W7031813 | K7705 | KNDS DEFENCE UK LIMITED |
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Techincal Specification:
| PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM | | SURFACE TREATMENT | ZINC AND PASSIVATE | | THICKNESS | 0.072 INCHES NOMINAL | | CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | BS1449 PART 1 CR4 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL |
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