| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 3.730 INCHES MINIMUM AND 3.790 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8640 |
| NOMINAL THREAD SIZE | 0.500 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.625 INCHES STUD THREAD |
| SPECIAL FEATURES | NUT END SHOULDER TAPERS 45 DEG.MIN AND 60 DEG.MAX AND 0.410 IN.LONG |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 4435-M,CODE A FSCM 34623 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD CLASS | 2A NUT THREAD |
| THREAD CLASS | 2A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.850 INCHES MINIMUM AND 0.910 INCHES MAXIMUM NUT THREAD |
| THREAD LENGTH | 1.150 INCHES MINIMUM AND 1.310 INCHES MAXIMUM STUD THREAD |
| THREAD QUANTITY PER INCH | 11 STUD THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |