| FASTENER LENGTH | 1.410 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATERIAL | STEEL COMP E4340 OR STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |