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National Stock Number: 5310-00-832-0840
Federal Supply Class: 5310
National Item Identification Number: 008320840
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:
177479 | 71791 | CURTISS-WRIGHT CONTROLS, INC. | 732041-6 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
CENTER HOLE SHAPE STYLE | ROUND | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | HOLE DIAMETER | 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM | OVERALL DIAMETER | 0.660 INCHES MINIMUM AND 0.680 INCHES MAXIMUM | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | STEEL COMP 631 OVERALL | PERIPHERAL SHAPE STYLE | ROUND | THICKNESS | 0.084 INCHES MINIMUM AND 0.096 INCHES MAXIMUM |
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