| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.5625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.594 INCHES NOMINAL |
| FASTENER LENGTH | 1.829 INCHES MINIMUM AND |
| 1.859 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 4340 OR |
| STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6349 OR 6382 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS6415 OR 6484 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS6322, 6325, OR 6327 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.266 INCHES MINIMUM AND |
| 0.296 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.865 INCHES MINIMUM AND |
| 0.877 INCHES MAXIMUM |
| GRIP LENGTH | 1.240 INCHES MINIMUM AND |
| 1.260 INCHES MAXIMUM |
| GRIP DIAMETER | 0.5761 INCHES MINIMUM AND |
| 0.5771 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS6203 THRU NAS6220 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, HEXHEAD, CLOSE TOLERANCE, ALLOY STEEL, SHORT THREAD, REDUCED MAJOR THREAD DIA., SELF-LOCKING AND NONLOCKING, 160 KSI FTU |