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National Stock Number:
5310-00-618-1435
Federal Supply Class:
5310
National Item Identification Number:
006181435
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:
| 255AS241-1 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.640 INCHES NOMINAL | | OVERALL DIAMETER | 1.183 INCHES MINIMUM AND 1.208 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 301 OR STEEL COMP 302 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | CIRCUMFERENCE ONE PART MODIFIED TO 0.468 IN. FROM HOLE CENTER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 FINISH 5.4.1. MIL STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.032 INCHES NOMINAL |
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