| CROSS-SECTIONAL SHAPE | HEXAGON |
| CROSS-SECTIONAL LENGTH | 0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM |
| NOMINAL THREAD SIZE | 0.138 INCHES RIGHT INTERNAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| SPECIAL FEATURES | MATERIAL: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2011 OVERALL;SURFACE TREATMENT: CHROMATE OVERALL;MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225 FED SPEC ALL MATERIAL RESPONSES OVERALL;SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 CL3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL;BEARING SURFACE TYPE: FLAT |
| SPECIFICATION/STANDARD DATA | 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| WIDTH ACROSS FLATS | 0.244 INCHES MINIMUM AND 0.256 INCHES MAXIMUM |
| THREAD CLASS | 2B RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND RIGHT INTERNAL |
| THREAD QUANTITY PER INCH | 32 RIGHT INTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |