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National Stock Number:
5310-01-503-4422
Federal Supply Class:
5310
National Item Identification Number:
015034422
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:
| A51H30510-11 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51H30510-11 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | C64135-002 | 0ZWK8 | MOOG MILITARY AIRCRAFT LLC |
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Techincal Specification:
| MATERIAL | STEEL COMP 4130 OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.332 INCHES MINIMUM AND | | 0.342 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.745 INCHES MINIMUM AND | | 0.755 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.078 INCHES NOMINAL | | INSIDE LEFT CORNER CHAMFER ANGLE | 30.0 DEGREES NOMINAL | | HARDNESS RATING | 42.0 ROCKWELL H MINIMUM AND | | 59.0 ROCKWELL H MAXIMUM | | SPECIAL FEATURES | WASHER/RETAINER, COUNTERSUNK - SPECIAL; TOP OF WASHER IS .251 MIN DIA AND .255 MAX DIA (INCHES); COUNTERSUNK IS .042 INCHES DEEP | | HEAT TREATMENT | ANNEALED |
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