| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 36 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| LEAD THREAD QUANTITY | FOUR |
| FASTENER LENGTH | 0.585 INCHES MINIMUM AND |
| 0.595 INCHES MAXIMUM |
| MATERIAL | CHROMIUM AND |
| NICKEL AND |
| STEEL BEARING SURFACE OF HEAD |
| STEEL FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A240 ASSN STD 1ST MATERIAL RESPONSE AND |
| ASTM A167 ASSN STD 2ND MATERIAL RESPONSE AND |
| ASTM A666 ASSN STD 3RD MATERIAL RESPONSE BEARING SURFACE OF HEAD |
| AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE BEARING SURFACE OF HEAD |
| CADMIUM FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 FED SPEC ALL TREATMENT RESPONSES BEARING SURFACE OF HEAD |
| QQ-P-416, TY2 CL2 FED SPEC ALL TREATMENT RESPONSES FASTENER |
| HEAD STYLE | PAN |
| HEAD DIAMETER | 0.320 INCHES MINIMUM AND |
| 0.330 INCHES MAXIMUM |
| HEAD HEIGHT | 0.110 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.157 INCHES MINIMUM AND |
| 0.160 INCHES MAXIMUM |
| SPECIAL FEATURES | RECESS PLUG DEPTH IS 0.179 - 0.191 INCHES; INTERNAL THREADS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | STUD ASSEMBLY PLUS FLUSH |