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National Stock Number:
5310-01-187-0902
Federal Supply Class:
5310
National Item Identification Number:
011870902
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:
| 7-217236220 | 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC | | 7-217236220 | 8V613 | THE BOEING COMPANY |
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Techincal Specification:
| MATERIAL | STEEL COMP 631 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-25043 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR | | 7-EPB040230 NO 2 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.161 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.560 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.063 INCHES NOMINAL | | HARDNESS RATING | 38.0 ROCKWELL C NOMINAL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 8V613 | | DESIGN CONTROL REFERENCE | 7-217236220 |
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