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National Stock Number:
5310-01-179-2858
Federal Supply Class:
5310
National Item Identification Number:
011792858
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:
| 11EOD1043 | 59678 | US ARMY ARMAMENT RESEARCH DEVELOPEMENT ENGINEERING CENTER | | 3696238 | 45152 | OSHKOSH CORP | | 4P522 | 25795 | W.W. GRAINGER, INC. | | 91090A109 | 39428 | MCMASTER-CARR SUPPLY CO | | 9109OA109 | 39428 | MCMASTER-CARR SUPPLY CO | | 3696238 | 75Q65 | OSHKOSH DEFENSE LLC |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | ZINC AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR | | MIL-C-81562,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.281 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.250 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.062 INCHES NOMINAL | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 59678 | | MFR SOURCE CONTROLLING REFERENCE | 11EOD1043 |
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