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National Stock Number:
5310-01-556-6715
Federal Supply Class:
5310
National Item Identification Number:
015566715
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:
| 578075C1 | 338X5 | ND DEFENSE LLC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM | | OVERALL DIAMETER | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,FLAT OR SPECIAL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | MATERIAL STEEL-1040 TO 1065, NAVISTAR SPEC A-0, PART 1;HEAT TREAT-QUENCH AND TEMPER ROCKWELL C36-42;FINCISH-ZINC DICHROMATE PER NAVISTAR SPEC G-20, CLASS 5B | | THICKNESS | 0.224 INCHES MINIMUM AND 0.254 INCHES MAXIMUM |
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