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National Stock Number:
5310-01-212-6147
Federal Supply Class:
5310
National Item Identification Number:
012126147
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:
| 4SE00749 | 80020 | NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2 | | 4SE00749-1 | 28638 | NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 1.3.1 BLDG 562-1 |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | | HEAT TREATMENT | COLD DRAWN | | HOLE DIAMETER | 1.219 INCHES MINIMUM AND 1.343 INCHES MAXIMUM | | OVERALL DIAMETER | 2.188 INCHES MINIMUM AND 2.312 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1141 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.1693 INCHES MINIMUM AND 0.1893 INCHES MAXIMUM |
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