| U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 19207 |
| U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 19207 |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM |
| PERIPHERAL SHAPE STYLE | ROUND |
| CENTER HOLE SHAPE STYLE | ROUND |
| THICKNESS | 0.157 INCHES MINIMUM AND 0.171 INCHES MAXIMUM |
| OVERALL DIAMETER | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |
| III END ITEM IDENTIFICATION | MRAP RG-33 AND RG-33 AUV |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL |
| SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| 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 ( .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 . 6 inches ( .15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be . 16 inches ( .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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