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National Stock Number:
5310-00-434-8811
Federal Supply Class:
5310
National Item Identification Number:
004348811
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:
| 905859-5 | 05257 | GENERAL DYNAMICS LAND SYSTEMS - CANADA CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL CORROSION RESISTING OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE FILM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 951029 FSCM 05257 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.151 INCHES MINIMUM AND | | 0.164 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.307 INCHES MINIMUM AND | | 0.320 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.027 INCHES MINIMUM AND | | 0.048 INCHES MAXIMUM | | COLOR | BLACK OVERALL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 05257 | | DESIGN CONTROL REFERENCE | 905859-5 |
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