| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.877 INCHES MINIMUM AND |
| 0.927 INCHES MAXIMUM |
| FASTENER LENGTH | 6.762 INCHES MINIMUM AND |
| 6.792 INCHES MAXIMUM |
| MATERIAL | STEEL COMP E4340 OR |
| STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR |
| AMS6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.312 INCHES MINIMUM AND |
| 0.327 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND |
| 0.940 INCHES MAXIMUM |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.6386 INCHES MINIMUM AND |
| 0.6396 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 5.865 INCHES MINIMUM AND |
| 5.885 INCHES MAXIMUM FIRST SHOULDER |
| SPECIFICATION/STANDARD DATA | 80205-NAS6610 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |