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National Stock Number:
5310-01-124-4626
Federal Supply Class:
5310
National Item Identification Number:
011244626
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:
| 4P29091-103A | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| MATERIAL | STEEL UNS K44220 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | STM05-501 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CC,CLASS 3 PER DS30000 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 1.760 INCHES MINIMUM AND | | 1.765 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 2.970 INCHES MINIMUM AND | | 3.030 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.044 INCHES MINIMUM AND | | 0.046 INCHES MAXIMUM | | HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND | | 59.0 ROCKWELL C MAXIMUM | | SURFACE FINISH | 125.0 MICROINCHES ALL SURFACES | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 98897 | | DESIGN CONTROL REFERENCE | 4P29091-103A |
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