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National Stock Number:
5310-00-471-0973
Federal Supply Class:
5310
National Item Identification Number:
004710973
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:
| 178598 | 71791 | CURTISS-WRIGHT CONTROLS, INC. |
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Techincal Specification:
| MATERIAL | STEEL COMP 4340 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CPS 6616 FSCM 71791 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.376 INCHES MINIMUM AND | | 0.381 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.745 INCHES MINIMUM AND | | 0.755 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.170 INCHES MINIMUM AND | | 0.180 INCHES MAXIMUM | | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND | | 43.0 ROCKWELL C MAXIMUM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 71791 | | DESIGN CONTROL REFERENCE | 178598 |
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