| NORTHROP GRUMMAN SYSTEMS CORPORATION | 3956 |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 0.217 INCHES MINIMUM AND 0.225 INCHES MAXIMUM |
| PERIPHERAL SHAPE STYLE | ROUND |
| CENTER HOLE SHAPE STYLE | ROUND |
| THICKNESS | 0.0145 INCHES MINIMUM AND 0.0175 INCHES MAXIMUM |
| OVERALL DIAMETER | 0.500 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY 5052 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/8,TEMPER H32 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 1 FED SPEC 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. |
