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National Stock Number:
5310-00-921-4544
Federal Supply Class:
5310
National Item Identification Number:
009214544
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:
| 589658 | 45934 | ONTIC ENGINEERING & MANUFACTURING, INC | | 589658 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL CORROSION RESISTING OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.186 INCHES MINIMUM AND | | 0.204 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.294 INCHES MINIMUM AND | | 0.296 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.044 INCHES MINIMUM AND | | 0.046 INCHES MAXIMUM | | HARDNESS RATING | 75.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND | | 79.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES OUTER | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 45934 | | DESIGN CONTROL REFERENCE | 589658 |
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