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National Stock Number:
5310-01-286-6075
Federal Supply Class:
5310
National Item Identification Number:
012866075
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:
| 11511516 | 11862 | GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT | | 11511516 | 24617 | GENERAL MOTORS CORP | | 11511516 | 7X677 | GENERAL MOTORS LLC |
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Techincal Specification:
| MATERIAL | STEEL COMP 1050 OR | | STEEL COMP 1551 OR | | STEEL COMP 1552 OR | | STEEL COMP 1053 OR | | STEEL COMP 1054 OR | | STEEL COMP 1055 OR | | STEEL COMP 1059 OR | | STEEL COMP 1060 OR | | STEEL COMP 1561 OR | | STEEL COMP 1062 OR | | STEEL COMP 1064 OR | | STEEL COMP 1065 OR | | STEEL COMP 1566 OR | | STEEL COMP 1069 OR | | STEEL COMP 1070 OR | | STEEL COMP 1071 OR | | STEEL COMP 1572 OR | | STEEL COMP 1074 OR | | STEEL COMP 1075 OR | | STEEL COMP 1078 OR | | STEEL COMP 1080 OVERALL | | SURFACE TREATMENT | OIL OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 19.5 MILLIMETERS MINIMUM AND | | 20.0 MILLIMETERS MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 2.0 MILLIMETERS MINIMUM AND | | 2.8 MILLIMETERS MAXIMUM | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND | | 45.0 ROCKWELL C MAXIMUM |
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