| FASTENER LENGTH | 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM |
| HEAD DIAMETER | 0.562 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 630 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| POINT LENGTH | 0.365 INCHES MINIMUM AND 0.395 INCHES MAXIMUM |
| POINT STYLE | DOG |
| POINT DIAMETER | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SPECIAL FEATURES | CONCENTRIC HOLE 1.100 IN. MIN 1.130 IN. MAX LTH; FIRST DIA CLOSEST TO HEAD 0.120 IN. MIN 0.130 IN. MAX,SECOND DIA 0.1873 IN. MIN 0.1878 IN. MAX |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.705 INCHES MINIMUM AND 0.765 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |