| EXTENDED WASHER DIAMETER | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM |
| FASTENER LENGTH | 1.080 INCHES MINIMUM AND 1.095 INCHES MAXIMUM |
| GRIP LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.236 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| HEAD STYLE | SPLINE EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 3RD MATERIAL RESPONSE OR MILS-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 6150 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.455 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 28 |