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National Stock Number:
5310-00-131-2665
Federal Supply Class:
5310
National Item Identification Number:
001312665
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:
| 206-040-329-3 | 97499 | BELL TEXTRON INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.252 INCHES MINIMUM AND 0.258 INCHES MAXIMUM | | OVERALL DIAMETER | 0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE AND AISI ASSN STD 2ND MATERIAL RESPONSE AND MIL-S-18729,COND N MIL SPEC 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OR STEEL COMP 1018 OR STEEL COMP 4130 OVERALL | | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE FINISH | 32.0 MICROINCHES BOTTOM | | THICKNESS | 0.063 INCHES NOMINAL |
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