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National Stock Number:
5310-01-291-4015
Federal Supply Class:
5310
National Item Identification Number:
012914015
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:
| MS51496-74 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 20.0 ROCKWELL H MINIMUM | | HOLE DIAMETER | 0.200 INCHES MINIMUM AND 0.210 INCHES MAXIMUM | | OVERALL DIAMETER | 0.355 INCHES MINIMUM AND 0.365 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIFICATION/STANDARD DATA | 96906-MS51496 GOVERNMENT STANDARD | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.060 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
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