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National Stock Number:
5310-00-471-6450
Federal Supply Class:
5310
National Item Identification Number:
004716450
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:
| 99-9128796 | 99995 | NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION | | SP.126E | K4975 | UFC AEROSPACE EUROPE LIMITED | | SP126E | 2S109 | LENTERN INTL INC | | SP126E | K7766 | BRITISH STANDARDS INSTITUTION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.267 INCHES MINIMUM AND 0.277 INCHES MAXIMUM | | OVERALL DIAMETER | 0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | PER THE UK, THIS IS NOT A DUPLICATE OF NSN 5310-99-680-0061. | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM |
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