| MATERIAL | STEEL |
| GENERAL CHARACTERISTICS ITEM DESCRIPTION | PITCH DIAMETER:0.2930" TO 0.2940", PD LEAD THREAD: 0.2864" TO 0.2884",MINOR DIAMETER: 0.2616" TO 0.2664" |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | STUD,STRAIGHT,VENTED,.3125-18 X .3125.24,180 KSI,SPECIAL |
| OVERALL DIAMETER | 0.2930 INCHES MINIMUM AND 0.2940 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.3160 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM |
| OVERALL LENGTH | 1.280 INCHES NOMINAL |
| SPECIAL FEATURES | MATERIAL:ALLOY STEEL - 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS 6325 OR AMS 6327 |
| SPECIAL TEST FEATURES | LEFT SIDE: 0.3125-18UNJS PER AS8879 CHAMFER END, 0.739" MIN,RIGHT SIDE: 0.3125-24UNJF-3A 0.420" MIN,MIDDLE DIAMETER 0.279" TO 0.289" |
| SUPPLEMENTARY FEATURES | HEAT TREATMENT: 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924 |
| SURFACE TREATMENT | OXIDE |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.3125-24 UNIFIED NATIONAL JOINT FINE (UNJF) |