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National Stock Number:
5310-01-138-4655
Federal Supply Class:
5310
National Item Identification Number:
011384655
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:
| A2888CH | 61208 | TWIN DISC, INCORPORATED |
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Techincal Specification:
| MATERIAL | STEEL COMP 1010 OR | | STEEL COMP 1012 OR | | STEEL COMP 1015 OR | | STEEL COMP 1016 OR | | STEEL COMP 1017 OR | | STEEL COMP 1018 OR | | STEEL COMP 1019 OR | | STEEL COMP 1020 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.458 INCHES MINIMUM AND | | 0.479 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.911 INCHES MINIMUM AND | | 0.932 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.051 INCHES MINIMUM AND | | 0.081 INCHES MAXIMUM | | HARDNESS RATING | 88.08 ROCKWELL SUPERFICIAL 15-N MINIMUM AND | | 92.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM | | FEATURES PROVIDED | CASEHARDENED |
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