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National Stock Number:
5310-01-503-4419
Federal Supply Class:
5310
National Item Identification Number:
015034419
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:
| A51H30510-13 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51H30510-13 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | C64135-001 | 0ZWK8 | MOOG INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 42.0 ROCKWELL H MINIMUM AND 59.0 ROCKWELL H MAXIMUM | | HEAT TREATMENT | ANNEALED | | HOLE DIAMETER | 0.332 INCHES MINIMUM AND 0.342 INCHES MAXIMUM | | INSIDE LEFT CORNER CHAMFER ANGLE | 30.0 DEGREES NOMINAL | | OVERALL DIAMETER | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4130 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | WASHER/RETAINER, COUNTERSUNK - SPECIAL; TOP OF WASHER IS .251 MIN DIA AND .255 MAX DIA (INCHES); COUNTERSUNK IS .042 INCHES DEEP | | THICKNESS | 0.078 INCHES NOMINAL |
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