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National Stock Number:
5310-01-399-1980
Federal Supply Class:
5310
National Item Identification Number:
013991980
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:
| 1B0314 | 77445 | RTX CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5510 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR MS 5511 FED STD SINGLE MATERIAL RESPONSE OVERALL OR MS 5512 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 321 OVERALL OR STEEL COMP 304L OVERALL OR STEEL COMP 347 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 0.445 INCHES MINIMUM AND 0.460 INCHES MAXIMUM | | THICKNESS | 0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM |
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