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National Stock Number:
5310-00-402-0239
Federal Supply Class:
5310
National Item Identification Number:
004020239
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:
| 30018-039-01 | 51918 | SCHNEIDER ELECTRIC USA, INC. | | 30018-039-01 | 56365 | SCHNEIDER ELECTRIC USA, INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.157 INCHES MINIMUM AND 0.162 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | 112R018401,FSCM 81487 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | OVERALL DIAMETER | 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | S30793-501 MFR REF 1ST TREATMENT RESPONSE AND S30794-501,FSCM 81487 MFR REF 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL | | THICKNESS | 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM |
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