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National Stock Number:
5310-01-143-9704
Federal Supply Class:
5310
National Item Identification Number:
011439704
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:
| 29-00178 | 81412 | TREADWELL CORPORATION (DELAWARE) |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.125 INCHES MINIMUM AND 1.135 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | VICTREX GR. 300P,FSCM 81412 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | PLASTIC POLYSULFONE OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 1.625 INCHES NOMINAL | | SPECIAL FEATURES | BASE INSULATING WASHER TO BE INJECTION MOLDED ONLY | | THICKNESS | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
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