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National Stock Number:
5310-00-436-7294
Federal Supply Class:
5310
National Item Identification Number:
004367294
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:
| 328C146C10F1 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM | | OVERALL DIAMETER | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-613,1/2,HARD FED SPEC 2ND MATERIAL RESPONSE AND QQ-B-613,1/2,HARD FED SPEC 3RD MATERIAL RESPONSE AND QQ-613,1/2,HARD FED SPEC 4TH MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | ENAMEL LIGHT GRAY GLOSS MIL-E-15090 TYPE 2 CLASS 2 ONE SIDE OF FLAT SURFACE AND THE OD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
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