| DISTANCE ACROSS FLATS | 0.750 INCHES NOMINAL |
| OVERALL LENGTH | 3.470 INCHES MINIMUM AND 3.530 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,COMP 360,1/2 H FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | COPPER ALLOY 360 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| SHOULDER LENGTH | 0.380 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-14550 MIL SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | COPPER OR CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A NUT THREAD |
| THREAD CLASS | 2A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.620 INCHES NOMINAL NUT THREAD |
| THREAD LENGTH | 2.250 INCHES NOMINAL STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |