| COUNTERBORE DIAMETER | 0.226 INCHES MINIMUM AND 0.230 INCHES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| NUT COUNTERBORE DEPTH | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM NUT |
| NUT DIAMETER | 0.3594 INCHES MINIMUM AND 0.3906 INCHES MAXIMUM |
| NUT HEIGHT | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| PILOT LENGTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| PILOT DIAMETER | 0.278 INCHES MINIMUM AND 0.282 INCHES MAXIMUM |
| SPECIAL FEATURES | CHAMFERED AND COUNTERSUNK,BOTH ENDS; KNURL ON PILOT OD ONLY |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2B |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 32 |