| NORTHROP GRUMMAN SYSTEMS CORPORATION | 97942 |
| LORAD INC | 7647 |
| THE BOEING COMPANY | 81205 |
| FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | 81348 |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 0.156 INCHES NOMINAL |
| PERIPHERAL SHAPE STYLE | ROUND |
| CENTER HOLE SHAPE STYLE | ROUND |
| THICKNESS | 0.027 INCHES MINIMUM AND 0.048 INCHES MAXIMUM |
| OVERALL DIAMETER | 0.312 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| NONDEFINITIVE SPEC/STD DATA | A TYPE AND 1 GRADE AND E CLASS |
| 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. |
