| HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 8.0 MILLIMETERS NUT THREAD |
| NOMINAL THREAD SIZE | 8.0 MILLIMETERS STUD THREAD |
| OVERALL LENGTH | 25.7 MILLIMETERS MINIMUM AND 26.3 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-87115,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL AND CHROMATE OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 10.25 MILLIMETERS MINIMUM STUD THREAD AND 12.25 MILLIMETERS MAXIMUM STUD THREAD |
| THREAD LENGTH | 10.3 MILLIMETERS MINIMUM NUT THREAD AND 10.9 MILLIMETERS MAXIMUM NUT THREAD |
| THREAD SERIES DESIGNATOR | M NUT THREAD |
| THREAD SERIES DESIGNATOR | M STUD THREAD |
| THREAD PITCH IN MILLIMETERS | 1.25 STUD THREAD |
| THREAD PITCH IN MILLIMETERS | 1.25 NUT THREAD |
| THREAD TOLERANCE CLASS | 6H EXTERNAL NUT THREAD |
| THREAD TOLERANCE CLASS | 6H EXTERNAL STUD THREAD |