TYPES B AND BP
Product Introduction
TYPES B AND BP

Nominal Size or Basic Screw Diameter |
Threads perinch | D | d | P | S | L | ||||||||
Major Diameter | Major Diameter | Point Diameter | Point Taper Length | Minimum Practical Nominal Screw Lengths |
||||||||||
Types B,BF,BT | Type BP | |||||||||||||
Max | Min | Max | Min | Max | Min | Max | Min | 90°Head | Csk Heads | 90°Head | Csk Heads | |||
0 | 0.0600 | 48 | 0.060 | 0.054 | 0.036 | 0.033 | 0.031 | 0.027 | 0.042 | 0.031 | 1/8 | 1/8 | 5/32 | 3/16 |
1 | 0.0730 | 42 | 0.075 | 0.069 | 0.049 | 0.046 | 0.044 | 0.040 | 0.048 | 0.036 | 1/8 | 5/32 | 3/16 | 7/32 |
2 | 0.0860 | 32 | 0.088 | 0.082 | 0.064 | 0.060 | 0.058 | 0.054 | 0.062 | 0.047 | 5/32 | 3/16 | 1/4 | 9/32 |
3 | 0.0990 | 28 | 0.101 | 0.095 | 0.075 | 0.071 | 0.068 | 0.063 | 0.071 | 0.054 | 3/16 | 7/32 | 9/32 | 5/16 |
4 | 0.1120 | 24 | 0.114 | 0.108 | 0.086 | 0.082 | 0.079 | 0.074 | 0.083 | 0.063 | 3/16 | 1/4 | 5/16 | 11/32 |
5 | 0.1250 | 20 | 0.130 | 0.123 | 0.094 | 0.090 | 0.087 | 0.082 | 0.100 | 0.075 | 7/32 | 9/32 | 11/32 | 13/32 |
6 | 0.1380 | 20 | 0.139 | 0.132 | 0.104 | 0.099 | 0.095 | 0.089 | 0.100 | 0.075 | 1/4 | 9/32 | 3/8 | 7/16 |
7 | 0.1510 | 19 | 0.154 | 0.147 | 0.115 | 0.109 | 0.105 | 0.099 | 0.105 | 0.079 | 1/4 | 5/16 | 12/32 | 15/32 |
8 | 0.1640 | 18 | 0.166 | 0.159 | 0.122 | 0.116 | 0.112 | 0.106 | 0.111 | 0.083 | 9/32 | 11/32 | 7/16 | 1/2 |
10 | 0.1900 | 16 | 0.189 | 0.182 | 0.141 | 0.135 | 0.130 | 0.123 | 0.125 | 0.094 | 5/16 | 3/8 | 1/2 | 19/32 |
12 | 0.2160 | 14 | 0.215 | 0.208 | 0.164 | 0.157 | 0.152 | 0.145 | 0.143 | 0.107 | 11/32 | 7/16 | 9/16 | 21/32 |
1/4 | 0.2500 | 14 | 0.246 | 0.237 | 0.192 | 0.185 | 0.179 | 0.171 | 0.143 | 0.107 | 3/8 | 1/2 | 21/32 | 3/4 |
5/16 | 0.3125 | 12 | 0.315 | 0.306 | 0.244 | 0.236 | 0.230 | 0.222 | 0.167 | 0.125 | 15/32 | 19/32 | 27/32 | 31/32 |
3/8 | 0.3750 | 12 | 0.380 | 0.371 | 0.309 | 0.299 | 0.293 | 0.285 | 0.167 | 0.125 | 17/32 | 11/16 | 15/16 | 1 1/8 |
7/16 | 0.4375 | 10 | 0.440 | 0.429 | 0.359 | 0.349 | 0.343 | 0.335 | 0.200 | 0.150 | 5/8 | 25/32 | 11/8 | 1 1/4 |
1/2 | 0.5000 | 10 | 0.504 | 0.493 | 0.423 | 0.413 | 0.407 | 0.399 | 0.200 | 0.150 | 11/16 | 27/32 | 11/4 | 1 13/32 |
See Note | 3 | 4 |