| ACCOMMODATED ITEM SECURING DEVICE TYPE | SCREW FASTENER |
| BOLT CIRCLE DIAMETER | 0.323 INCHES MINIMUM AND 0.333 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP |
| DISTANCE BETWEEN MOUNTING FACILITY CENTERS | 0.242 INCHES MINIMUM AND 0.258 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | ALUMINUM |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 SCREW ALL MOUNTING FACILITIES |
| NOMINAL THREAD SIZE | 0.086 INCHES ALL MOUNTING FACILITIES |
| SPECIAL FEATURES | HEAT TREAT AT 240DEG.- 260DEG. F. FOR 1-1& 1-HALVE HOURS PER 580-5296-001. |
| STYLE DESIGNATOR | IRREGULAR |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-26074,C4,GRADE B MIL SPEC ALL TREATMENT RESPONSES |
| SURFACE TREATMENT | NICKEL AND COPPER |
| THREAD CLASS | 2B ALL MOUNTING FACILITIES |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) ALL MOUNTING FACILITIES |