BSC (British Standard Cycle) This fine thread profile was formulated for, and is well suited to cycle and motorcycle applications. Its fine pitch, allows high torque settings, and resists the tendancy to loosen under vibration, the larger core diameter also gives greater shear strength. Angle of thread = 60deg
Size Outside Dia Inch Tpi Pitch Inch Core Dia Inch Radius Inch Thread Depth Thou Hex A/flats Inch Head Depth Inch Washer Face Dia Inch Std Nut Depth Inch Lock Nut Depth Inch Tapping Drill Size Inch Tapping Drill Size Mm Letter Or Number
7 swg RH 0.06 56 0.02 0.04 0.00 10 0.04 1.0 61
7 swg RH 0.06 62 0.02 0.04 9 0.04 1.1 57
16 swg RH 0.06 56 0.02 0.04 0.00 10 0.04 1.0 61
16 swg RH 0.06 62 0.02 0.05 9 0.05 1.2 3/64
15 swg RH 0.07 56 0.02 0.05 0.00 10 0.06 1.4 54
15 swg RH 0.07 62 0.02 0.06 0.00 9 0.06 1.6 1/16
14 swg RH 0.08 56 0.02 0.06 0.00 10 0.06 1.6 1/16
14 swg RH 0.08 62 0.02 0.06 0.00 9 0.06 1.6 1/16
13 swg RH 0.09 56 0.02 0.07 0.00 10 0.07 1.9 48
12 swg RH 0.10 44 0.02 0.08 0.00 10 0.08 2.1 46
11 swg RH 0.12 44 0.02 0.09 0.00 12 0.10 2.5 41
1/8 RH 0.13 40 0.03 0.10 0.00 13 0.10 2.5 39
10 swg RH 0.13 44 0.02 0.10 0.00 12 0.11 2.7 36
9 swg RH 0.14 40 0.03 0.11 0.00 13 0.12 3.0 32
5/32 RH 0.16 32 0.03 0.12 0.01 17 0.13 3.2 30