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National Stock Number:
5310-01-106-5813
Federal Supply Class:
5310
National Item Identification Number:
011065813
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:
| 7312-4018-1 | 12115 | DRS ICAS, LLC |
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Techincal Specification:
| MATERIAL | COPPER ALLOY 268 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613, COMP 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.250 INCHES MINIMUM AND | | 0.256 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | RECTANGULAR | | LENGTH | 0.510 INCHES MINIMUM AND | | 0.570 INCHES MAXIMUM | | WIDTH ACROSS FLATS | 0.310 INCHES MINIMUM AND | | 0.370 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.032 INCHES NOMINAL | | SPECIAL FEATURES | WASHER, SWITCH KEYING-SLOTTED AT ONE END, WIDTH OF SLOT .067 POM .003, HOLE CENTER TO THE END OF SLOT RADIUS .250, LENGTH OF KEY .023 PLUS .005 OR MINUS .002, WIDTH OF KEY .030 TO .035, CENTER OF HOLE FROM SLOTTED END .340 |
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