| COUNTERSINK ANGLE | 154.0 DEGREES MINIMUM AND 158.0 DEGREES MAXIMUM |
| HEAD HEIGHT | 0.035 INCHES NOMINAL |
| HEAD STYLE | COOPER'S (INCLUDED ANGLE - 135 DEG AND OVER) |
| HEAD MAJOR DIAMETER | 0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES LOCKING RING |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES SLEEVE |
| MATERIAL | COPPER ALLOY OR NICKEL ALLOY SLEEVE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CHERRYLOCK RIVET BULBED 156 DEGREE COUNTERSUNK HEAD |
| SHANK DIAMETER | 0.139 INCHES MINIMUM AND 0.143 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING HIGH CLINCH SHANK |
| SPECIAL FEATURES | GRIP RANGE IS 0.063 TO 0.125 INCHES; LOCKING RING IS COPPER AND NICKLE ALLOY |