| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.656 INCHES MINIMUM |
| 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 |
| MIL-S-8695 MIL SPEC 6TH MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| STYLE DESIGNATOR | ROUND, CLOSED W/SHOULDER |
| EYE INSIDE DIAMETER | 0.375 INCHES MINIMUM AND |
| 0.378 INCHES MAXIMUM |
| SHOULDER THICKNESS | 0.125 INCHES NOMINAL |
| SHANK LENGTH | 2.828 INCHES MINIMUM AND |
| 2.875 INCHES MAXIMUM |
| EYE STOCK THICKNESS | 0.250 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.875 INCHES NOMINAL |
| OVERALL LENGTH | 4.063 INCHES NOMINAL |
| DISTANCE FROM CENTER OF EYE TO SHANK END | 3.562 INCHES NOMINAL |
| EYE OUTSIDE WIDTH | 0.875 INCHES NOMINAL |
| DISTANCE FROM THREADED END TO SHANK HOLE CENTER | 2.672 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE |