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National Stock Number:
5310-00-891-1631
Federal Supply Class:
5310
National Item Identification Number:
008911631
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:
| 1284558-123 | 98897 | LOCKHEED MARTIN CORP | | 154897 | 09017 | EDO | | 6855527 | 63005 | ROLLS-ROYCE CORPORATION | | 6855527 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| MATERIAL | STEEL CORROSION RESISTING OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.623 INCHES MINIMUM AND | | 0.633 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.240 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.125 INCHES MINIMUM AND | | 0.135 INCHES MAXIMUM | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND | | 36.0 ROCKWELL C MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES TOP | | 63.0 MICROINCHES BOTTOM | | 63.0 MICROINCHES INNER | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 63005 | | DESIGN CONTROL REFERENCE | 6855527 |
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