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National Stock Number:
5310-01-197-3341
Federal Supply Class:
5310
National Item Identification Number:
011973341
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:
| A2888AH | 61208 | TWIN DISC, INCORPORATED | | T44816 | 61208 | TWIN DISC, INCORPORATED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 88.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 92.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM | | HOLE DIAMETER | 0.555 INCHES MINIMUM AND 0.565 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1050 OVERALL OR STEEL COMP 1053 OVERALL OR STEEL COMP 1055 OVERALL OR STEEL COMP 1060 OVERALL OR STEEL COMP 1064 OVERALL OR STEEL COMP 1065 OVERALL OR STEEL COMP 1069 OVERALL OR STEEL COMP 1070 OVERALL OR STEEL COMP 1074 OVERALL OR STEEL COMP 1075 OVERALL OR STEEL COMP 1078 OVERALL OR STEEL COMP 1080 OVERALL OR STEEL COMP 1084 OVERALL OR STEEL COMP 1085 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | THICKNESS | 0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM |
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