| DISTANCE BETWEEN MOUNTING HOLE CENTERS | 1.000 INCHES NOMINAL |
| DISTANCE FROM FLANGE TO END | 0.235 INCHES NOMINAL |
| FLANGE LENGTH | 1.250 INCHES NOMINAL |
| FLANGE MOUNTING HOLE DIAMETER | 0.139 INCHES MINIMUM AND 0.144 INCHES MAXIMUM |
| FLANGE THICKNESS | 0.032 INCHES NOMINAL |
| FLANGE WIDTH | 1.250 INCHES NOMINAL |
| HEIGHT | 0.406 INCHES NOMINAL |
| INSIDE DIAMETER | 0.158 INCHES MINIMUM AND 0.174 INCHES MAXIMUM |
| LOAD RATING | 40.0 POUNDS MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-639, COMP 1 OR 2 OR 3 FED SPEC SINGLE MATERIAL RESPONSE MOUNTING BASE |
| MATERIAL | COPPER ALLOY MOUNTING BASE |
| SHORTEST DISTANCE BETWEEN MOUNTING HOLE CENTERS | 1.000 INCHES NOMINAL |
| STATIC LOAD RATING AT SPECIFIED DEFLECTION | 20 POUND LOAD RATING AT 0.062 IN. DEFLECTION |
| STYLE DESIGNATOR | ROUND W/BUSHING FOUR-HOLE FLANGE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-M-10578 MIL SPEC SINGLE TREATMENT RESPONSE AND TT-P-666 FED SPEC SINGLE TREATMENT RESPONSE AND TT-3-529 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE AND PAINT AND ENAMEL OVERALL |