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National Stock Number:
5310-00-661-4411
Federal Supply Class:
5310
National Item Identification Number:
006614411
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:
| 8391685 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 53.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 2.632 INCHES NOMINAL | | OVERALL DIAMETER | 4.109 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624,4150 FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-624,8650 FED SPEC 2ND MATERIAL RESPONSE AND QQ-S-624,8750 FED SPEC 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | THICKNESS | 0.500 INCHES NOMINAL |
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