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National Stock Number:
5310-00-143-6394
Federal Supply Class:
5310
National Item Identification Number:
001436394
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:
| 10498738 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 10941915 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 10941915-6 | 19200 | US ARMY ARDEC RDECOM | | 10941915-6 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| MATERIAL | STEEL COMP 4130 OR | | STEEL COMP 4140 OR | | STEEL COMP 8640 OR | | STEEL COMP 8740 OR | | STEEL COMP 1045 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC 1ST MATERIAL RESPONSE AND | | QQ-S-624 FED SPEC 2ND MATERIAL RESPONSE AND | | QQ-S-624 FED SPEC 3RD MATERIAL RESPONSE AND | | QQ-S-624 FED SPEC 4TH MATERIAL RESPONSE AND | | 66 FED STD 5TH MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.584 INCHES MINIMUM AND | | 0.604 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.490 INCHES MINIMUM AND | | 1.510 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.157 INCHES MINIMUM AND | | 0.171 INCHES MAXIMUM | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND | | 35.0 ROCKWELL C MAXIMUM | | FEATURES PROVIDED | CASEHARDENED | | HEAT TREATMENT | QUENCHED AND | | TEMPERED |
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