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National Stock Number:
5310-01-236-2139
Federal Supply Class:
5310
National Item Identification Number:
012362139
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:
| BACW10BP20P | 08073 | MAMCO MFG CO INC | | BACW10BP20P | 10630 | ANILLO INDUSTRIES LLC | | BACW10BP20P | 56878 | SPS TECHNOLOGIES, LLC | | BACW10BP20P | 58009 | MOELLER MANUFACTURING & SUPPLY, LLC | | BACW10BP20P | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 1.250 INCHES MINIMUM AND 1.261 INCHES MAXIMUM | | OVERALL DIAMETER | 2.125 INCHES MINIMUM AND 2.145 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-18733 MIL SPEC 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 4135 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL AND CADMIUM OVERALL | | THICKNESS | 0.092 INCHES MINIMUM AND 0.108 INCHES MAXIMUM |
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