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
1 1/8 1.13 9 0.11 0.98 0.02 71 1.67 0.75 1.62 1.00 0.67 1.00 25.4 1 16
1 1/4 1.25 9 0.11 1.11 0.02 71 1.86 0.83 1.80 1.13 0.75 1.13 28.6 1 - 1/8 17
1 3/8 1.38 8 0.13 1.21 0.02 80 2.05 0.92 1.99 1.25 0.83 1.23 31.5 1 - 15/64 18
1 1/2 1.50 8 0.13 1.34 0.02 80 2.22 1.00 2.16 1.38 0.92 1.36 34.5 1 - 23/64 19
1 5/8 1.63 8 0.13 1.47 0.02 80 2.41 1.49 37.8 1 - 15/32 20
1 3/4 1.75 7 0.14 1.57 0.02 92 2.58 1.17 2.50 1.63 1.08 1.60 40.7 1 - 5/8 21
2 2.00 7 0.14 1.82 0.02 92 2.76 1.33 2.68 1.75 1.17 1.84 46.6 1 - 27/32 22
2 1/4 2.25 6 0.17 2.04 0.02 107 3.15 2.05 52.4 2 - 1/16 23
2 1/2 2.50 6 0.17 2.29 0.02 107 3.55 2.33 59.0 2 - 5/16 24
2 3/4 2.75 6 0.17 2.54 0.02 107 3.89 2.56 65.0 2 - 9/16 25
3 3.00 5 0.20 2.74 0.03 128 4.19 2.78 70.6 2 - 25/32 26

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