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National Stock Number:
5310-00-153-8779
Federal Supply Class:
5310
National Item Identification Number:
001538779
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:
| 2587794 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM | | OVERALL DIAMETER | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-766,COND A FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-766,COND A FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE AND QQ-S-763,COND A FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-766 FED SPEC 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OVERALL | | PERIPHERAL SHAPE STYLE | DEE | | WIDTH | 1.685 INCHES MINIMUM AND 1.815 INCHES MAXIMUM | | THICKNESS | 0.100 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
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