| THREAD DIRECTION | RIGHT-HAND NUT THREAD B |
| THREAD LENGTH | 0.688 INCHES MINIMUM NUT THREAD A |
| THREAD LENGTH | 0.438 INCHES MINIMUM NUT THREAD B |
| THREAD PITCH DIAMETERS | +0.2248 TO 0.2263 INCHES NUT THREAD A |
| THREAD QUANTITY PER INCH | 20 NUT THREAD A |
| THREAD QUANTITY PER INCH | 28 NUT THREAD B |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD B |
| THREAD SERIES DESIGNATOR | UNJS NUT THREAD A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6382 NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR AMS6415 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OR AMS6349 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS6322 NATIONAL STD/SPEC 4TH MATERIAL RESPONSE OR AMS6325 NATIONAL STD/SPEC 5TH MATERIAL RESPONSE OR AMS6327 NATIONAL STD/SPEC 6TH MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | STUD, STRAIGHT, .2500-20 X .2500-28 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.2500 INCHES NUT THREAD A |
| NOMINAL THREAD SIZE | 0.2500 INCHES NUT THREAD B |
| OVERALL LENGTH | 1.24 INCHES MINIMUM AND 1.26 INCHES MAXIMUM |
| SPECIAL FEATURES | HEAT TREAT: 125-145 KSI ULTIMATE TENSILE STRENGTH PER AMS2759 |
| SPECIFICATION/STANDARD DATA | 97499-120-161 MANUFACTURERS STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II CLASS 2 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD B |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD A |