| FASTENER LENGTH | 1.266 INCHES MINIMUM AND 1.312 INCHES MAXIMUM | 
| FEATURES PROVIDED | FINISHED HEAD | 
| GRIP LENGTH | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM | 
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM  AND 32.0 ROCKWELL C MAXIMUM OVERALL | 
| HEAD HEIGHT | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM | 
| HEAD STYLE | HEXAGON | 
| LOCKING FEATURE | PELLET THREADS | 
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE  OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE  OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE  OR MIL-S-6758 MIL SPEC 4TH MATERIAL RESPONSE OVERALL | 
| MATERIAL | STEEL COMP 4140  OR STEEL COMP 8740  OR STEEL COMP 8735  OR STEEL COMP 4130 OVERALL | 
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | 
| NOMINAL THREAD DIAMETER | 0.562 INCHES | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | CADMIUM  AND CHROMATE OVERALL | 
| THREAD CLASS | 3A | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD LENGTH | 0.875 INCHES MINIMUM AND 0.953 INCHES MAXIMUM | 
| THREAD QUANTITY PER INCH | 18 | 
| THREAD SERIES DESIGNATOR | UNF | 
| WIDTH BETWEEN FLATS | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM |