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National Stock Number:
5310-99-290-6010
Federal Supply Class:
5310
National Item Identification Number:
992906010
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:
| G413/4544 ITEM 7 | K7705 | KNDS DEFENCE UK LIMITED | | G413/4544/7 | K7705 | KNDS DEFENCE UK LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 28.000 MILLIMETERS MINIMUM AND 28.033 MILLIMETERS MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 40.00 MILLIMETERS NOMINAL | | SURFACE FINISH | 3.2 MICROMETERS INNER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BS 4921 CLASS 1 NATIONAL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC AND PASSIVATE OVERALL | | THICKNESS | 2.00 MILLIMETERS NOMINAL |
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