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National Stock Number:
5310-00-531-4278
Federal Supply Class:
5310
National Item Identification Number:
005314278
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:
| 210-48561 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | 210-48561 | 49944 | RAYBESTOS-MANHATTAN INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM | | HOLE DIAMETER | 0.688 INCHES NOMINAL | | OVERALL DIAMETER | 1.046 INCHES MINIMUM AND 1.078 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | 417,TY S,CL SC,GR SC270 MIL STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER SYNTHETIC OVERALL | | MINIMUM TENSILE STRENGTH | 2000 POUNDS PER SQUARE INCH | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.028 INCHES MINIMUM AND 0.052 INCHES MAXIMUM |
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