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National Stock Number:
5310-01-626-5933
Federal Supply Class:
5310
National Item Identification Number:
016265933
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:
| SW37169 | 98255 | DRS SUSTAINMENT SYSTEMS INC |
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Techincal Specification:
| MATERIAL | STEEL OR | | STEEL COMP 4140 OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PER ASTM B633, TYPE VI,CLASS SC3,BLACK. COATING MUST BE FREE OF HEXAVALENT CHROMIUM. ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.688 INCHES MINIMUM AND | | 0.718 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 3.50 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.25 INCHES NOMINAL | | COLOR | BLACK OVERALL | | SPECIAL FEATURES | MATERIAL IS STEEL PLATE ASTM A514,GRADE B OR H. OPTIONAL: STEEL BAR PER ASTM A322,4140. | | PART NAME ASSIGNED BY CONTROLLING AGENCY | RETAINER |
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