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National Stock Number:
5310-01-216-2803
Federal Supply Class:
5310
National Item Identification Number:
012162803
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:
| 219356 | 31361 | WOODWARD, INC. | | 998105 | 31361 | WOODWARD, INC. | | 998105 | 66503 | WOODWARD, INC. | | BACW10AT25 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.345 INCHES MINIMUM AND 0.355 INCHES MAXIMUM | | OVERALL DIAMETER | 0.645 INCHES MINIMUM AND 0.665 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6359 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6358 ASSN STD 2ND MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THICKNESS | 0.032 INCHES NOMINAL |
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