| DISTANCE ACROSS FLATS | 0.438 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.203 INCHES NOMINAL |
| OVERALL LENGTH | 1.531 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4130 |
| SHOULDER LENGTH | 0.156 INCHES NOMINAL |
| TEST DATA DOCUMENT | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.469 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.469 INCHES MINIMUM STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD QUANTITY PER INCH | 28 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF STUD THREAD |
| STUD END SHANK DIAMETER | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.234 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE FINISH | 250.0 MICROINCHES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE OVERALL |