| FASTENER LENGTH | 1.625 INCHES MINIMUM AND 1.688 INCHES MAXIMUM |
| HEAD STYLE | CROWNED HEXAGON |
| HEAD HEIGHT | 0.109 INCHES NOMINAL |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| GRIP LENGTH | 0.031 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |