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National Stock Number:
5310-00-740-0110
Federal Supply Class:
5310
National Item Identification Number:
007400110
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:
| 7400110 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | DEE | | CENTER HOLE WIDTH | 1.679 INCHES MINIMUM AND 1.695 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.797 INCHES MINIMUM AND 1.828 INCHES MAXIMUM | | OVERALL DIAMETER | 3.984 INCHES MINIMUM AND 4.016 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
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