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National Stock Number:
5310-01-168-7741
Federal Supply Class:
5310
National Item Identification Number:
011687741
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:
| 71330183-001 | 04939 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL COMP 630 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-26074 CLASS 2,GRADE A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.331 INCHES MINIMUM AND | | 0.338 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.875 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | THICKNESS | 0.059 INCHES MINIMUM AND | | 0.069 INCHES MAXIMUM | | OUTSIDE LEFT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | SURFACE FINISH | 63.0 MICROINCHES ALL SURFACES | | SPECIAL FEATURES | 2 HOLES 0.062 IN. MIN AND 0.064 IN. MAX 180.0 DEGREES APART LOCATED ON A 0.625 IN. DIA BOLT CIRCLE AND FREE OF SURFACE TREATMENT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 04939 | | DESIGN CONTROL REFERENCE | 71330183-001 |
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