Cup & Flat Point Dimensions
Nominal Size (Basic Screw Diameter) | J |
T | C | |||
---|---|---|---|---|---|---|
Nominal Hexagon Socket Size | Minimum Key Engagement | Cup and Flat Point Diameters | ||||
Hex Socket, TH | Max | Min | ||||
5 | (0.1250) | 1/16 | 0.062 | 0.080 | 0.067 | 0.057 |
6 | (0.1380) | 1/16 | 0.062 | 0.080 | 0.074 | 0.064 |
8 | (0.1640) | 5/64 | 0.078 | 0.090 | 0.087 | 0.076 |
10 | (0.1900) | 3/32 | 0.094 | 0.100 | 0.102 | 0.088 |
1/4 | (0.2500) | 1/8 | 0.125 | 0.125 | 0.132 | 0.118 |
5/16 | (0.3125) | 5/32 | 0.156 | 0.156 | 0.172 | 0.156 |
3/8 | (0.3750) | 3/16 | 0.188 | 0.188 | 0.212 | 0.194 |
7/16 | (0.4375) | 7/32 | 0.219 | 0.219 | 0.252 | 0.232 |
1/2 | (0.5000) | 1/4 | 0.250 | 0.250 | 0.291 | 0.270 |
5/8 | (0.6250) | 5/16 | 0.312 | 0.312 | 0.371 | 0.347 |
3/4 | (0.7500) | 3/8 | 0.375 | 0.375 | 0.450 | 0.425 |
7/8 | (0.8750) | 1/2 | 0.500 | 0.500 | 0.530 | 0.502 |
1 | (1.0000) | 9/16 | 0.562 | 0.562 | 0.609 | 0.579 |
1-1/8 | (1.1250) | 9/16 | 0.562 | 0.562 | 0.689 | 0.655 |
1-1/4 | (1.2500) | 5/8 | 0.625 | 0.625 | 0.767 | 0.733 |
1-3/8 | (1.3750) | 5/8 | 0.625 | 0.625 | 0.848 | 0.808 |
1-1/2 | (1.5000) | 3/4 | 0.750 | 0.750 | 0.926 | 0.886 |
1-3/4 | (1.7500) | 1 | 1.000 | 1.000 | 1.086 | 1.039 |
2 | (2.000) | 1 | 1.000 | 1.000 | 1.244 | 1.193 |