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National Stock Number:
5310-01-560-0018
Federal Supply Class:
5310
National Item Identification Number:
015600018
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:
| PD37-08-1 | 39498 | GARDNER SPRING INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.406 INCHES NOMINAL | | OVERALL DIAMETER | 0.875 INCHES NOMINAL | | MATERIAL | PLASTIC OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | POLYURETHANE DISCS; POLYURETHANE COMPOSITE DISC SPRINGS; POLYURETHANE DISC SPRING WASHER | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | POLYURETHANE DISC SPRINGS ARE USED IN APPLICATIONS WHERE MAGNETISM, CORROSION OR VIBRATION PREVENTS THE USAGE OF STANDARD STEEL COMPRESSION SPRINGS. THEY ARE ALSO USEFUL IN HIGH LOAD APPLICATIONS IN CONFINED SPACES | | SUPPLEMENTARY FEATURES | DEFLECTION 0.0125; LOAD DEFECTION 518.07 LBS; FITS BOLT SIZE 0.375 | | THICKNESS | 0.125 INCHES NOMINAL |
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