| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 2.105 INCHES MINIMUM AND 2.105 INCHES MINIMUM AND 2.150 INCHES MAXIMUM2.150 INCHES MAXIMUM |
| FASTENER LENGTH | 2.605 INCHES MINIMUM AND 2.650 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| HARDNESS RATING | 0.32 ROCKWELL C MINIMUM AND 0.32 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.450 INCHES MINIMUM AND 0.460 INCHES MAXIMUM |
| HEAD HEIGHT | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGONHEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL DOCUMENT AND CLASSIFICATION | GM-300-M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES0.312 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | P-45-M,P-10-E,FSC-24617 MFR REF ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND DICHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 18 |
| WIDTH ACROSS FLATS | 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM |