1. BSF, Whit, & Cycle Threads
  2. British Std Fine

British Std Fine

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Total record count: 26.

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BSF (British Standard Fine) Angle of thread = 55 degrees British Standard Fine (BSF)
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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 Standard Nut Depth Inch Lock Nut Depth Inch Tapping Drill Size Inch Tapping Drill Size mm Letter Or Number Id
3/16 0.19 32 0.03 0.15 0.00 20 0.34 0.16 3.9 5/32 1
7/32 0.22 28 0.04 0.17 0.00 23 0.18 4.6 14 2
1/4 0.25 26 0.04 0.20 0.01 25 0.45 0.18 0.43 0.20 0.19 0.21 5.3 4 3
9/32 0.28 26 0.04 0.23 0.01 25 0.24 6.0 B 4
5/16 0.31 22 0.05 0.25 0.01 29 0.53 0.22 0.51 0.25 0.21 0.27 6.7 17/64 5
3/8 0.38 20 0.05 0.31 0.01 32 0.60 0.26 0.58 0.31 0.26 0.32 8.2 P 6
7/16 0.44 18 0.06 0.37 0.01 36 0.71 0.30 0.69 0.38 0.28 0.38 9.7 3/8 7
1/2 0.50 16 0.06 0.42 0.01 40 0.82 0.34 0.80 0.44 0.30 0.44 11.0 7/16 8
9/16 0.56 16 0.06 0.48 0.01 40 0.92 0.38 0.90 0.50 0.33 0.50 12.6 1/2 9
5/8 0.63 14 0.07 0.53 0.01 46 1.01 0.42 0.99 0.56 0.38 0.55 14.0 35/64 10
11/16 0.69 14 0.07 0.60 0.01 46 1.10 0.61 15.5 39/64 11
3/4 0.75 12 0.08 0.64 0.01 53 1.20 0.50 1.18 0.69 0.46 0.66 16.7 21/32 12
13/16 0.81 12 0.08 0.71 0.01 53 0.72 18.3 23/32 13
7/8 0.88 11 0.09 0.76 0.01 58 1.30 0.58 1.27 0.75 0.50 0.78 19.7 25/32 14
1 1.00 10 0.10 0.87 0.01 64 1.48 0.67 1.45 0.88 0.58 0.89 22.7 57/64 15

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