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National Stock Number:
5310-01-558-3843
Federal Supply Class:
5310
National Item Identification Number:
015583843
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:
| 10026317 | 61C19 | MIL-COTS CORPORATION | | 12759-00710 | 0Y3H3 | FASTENAL COMPANY | | AEW26X25W000SB7A31 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS | | 71212 | 0Y3H3 | FASTENAL COMPANY | | 1886180 | 45152 | OSHKOSH CORP | | 1886180 | 75Q65 | OSHKOSH DEFENSE LLC | | ASME B18.21.1 1/4X1X0.065 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.281 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,PLAIN,FLAT;0.250IN WIDE;0.063IN THICK;SST | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | NPAC | | OVERALL DIAMETER | 1.000 INCHES NOMINAL | | SPECIAL FEATURES | STAINLESS STEEL MATERIAL | | THICKNESS | 0.056 INCHES MINIMUM AND 0.071 INCHES MAXIMUM |
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