| DISTANCE ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| OVERALL LENGTH | 2.710 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP E4340 |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD0.312 INCHES STUD THREAD |
| NUT END SHANK LENGTH | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM |
| NUT END SHANK DIAMETER | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| SPECIAL FEATURES | 160 TO 180 KSI MIN. ULTIMATE TENSILE STRENGTH,95 KSI MIN. SHEAR STRENGTH PER MIL-H-6875 |
| SHOULDER LENGTH | 0.158 INCHES MINIMUM AND 0.171 INCHES MAXIMUM |
| STUD END SHANK DIAMETER | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.095 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD32.0 MICROINCHES SHANK32.0 MICROINCHES SHOULDER BEARING SURFACE32.0 MICROINCHES STUD THD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREADRIGHT-HAND STUD THREAD |
| THREAD CLASS | 3A NUT THREAD3A STUD THREAD |
| THREAD LENGTH | 0.798 INCHES NOMINAL NUT THREAD0.330 INCHES NOMINAL STUD THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREADUNJF STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD24 STUD THREAD |