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National Stock Number:
5310-01-143-6570
Federal Supply Class:
5310
National Item Identification Number:
011436570
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:
| BACW10DH-C4 | 81205 | THE BOEING COMPANY | | BACW10DH-C4 | A0126 | LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | OVERALL DIAMETER | 0.531 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4130 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIFICATION/STANDARD DATA | 81205-BACW10DH MANUFACTURERS STANDARD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THICKNESS | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
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