Screw Thread | 1/4 | ||
D | 0.25 | ||
PP | UNC | 20 | |
Ds | Max | 0.260 | |
Ds | Min | 0.237 | |
S | Basic | 3/8 | |
S | Max | 0.375 | |
S | Min | 0.362 | |
E | Max | 0.53 | |
E | Min | 0.498 | |
K | Basic | 11/64 | |
K | Max | 0.188 | |
K | Min | 0.156 | |
R | Max | 0.03 | |
R | Min | 0.01 | |
B | L≤6 | 0.750 | |
B | L>6 | 1.000 |