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National Stock Number:
5310-01-521-3580
Federal Supply Class:
5310
National Item Identification Number:
015213580
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:
| 98029A031 | 39428 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COLOR | BLACK OVERALL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM | | HOLE DIAMETER | 0.4062 INCHES NOMINAL | | OVERALL DIAMETER | 0.8750 INCHES NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BLACK-OXIDE CASE-HARDENED STEEL WASHER | | MATERIAL | STEEL COMP 1008 AND STEEL COMP 1010 AND STEEL COMP 12L14 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | FOR 3/8" SCREW SIZE | | SURFACE TREATMENT | OXIDE OVERALL | | THICKNESS | 0.11 INCHES MINIMUM AND 0.14 INCHES MAXIMUM |
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