| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6382 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| OVERALL LENGTH | 1.175 INCHES MINIMUM AND 1.195 INCHES MAXIMUM |
| SPECIAL FEATURES | 160,000 PSI MIN TENSILE |
| SURFACE FINISH | 63.0 MICROINCHES SHANK |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD |
| SURFACE FINISH | 32.0 MICROINCHES STUD THD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.500 INCHES MINIMUM STUD THREAD AND 0.600 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 0.501 INCHES MINIMUM NUT THREAD AND 0.572 INCHES MAXIMUM NUT THREAD |
| THREAD PITCH DIAMETERS | +0.2248/+0.2263 INCHES STUD THREAD |
| THREAD QUANTITY PER INCH | 20 STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |