Общий каталог Yamawa 2022 - 2023 - страница 1198

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Technical Description of productsInformation 15. Bored hole size before tapping ( for thread cutting ) ■ for General Bicycle Threads (BC) ■ for European Steel Conduit Threads (Pg) Unit：mm Unit：mm Size Minor diameter of internal threads（D1） Tap drill hole sizeMax.Min.(reference)Size Minor diameter of internal threads（D1） Tap drill hole sizeMax.Min.(reference) BC 5/16 - 26 7.16 7.06 7.14 Pg 7 - 20 11.43 11.28 11.39 BC 3/8 - 26 8.75 8.65 8.73 Pg 9 - 18 14.01 13.86 13.97 BC 7/16 - 26 10.33 10.23 10.31 Pg 11 - 18 17.41 17.26 17.37 BC 1/2 - 20 11.66 11.55 11.63 Pg 13.5 - 18 19.21 19.06 19.17 BC 9/16 - 20 13.25 13.14 13.22 Pg 16 - 18 21.31 21.16 21.27 BC 5/8 - 20 14.84 14.73 14.81 Pg 21 - 16 27.03 26.78 26.97 BC 11/16 - 24 16.59 16.48 16.56 Pg 29 - 16 35.73 35.48 35.67 BC 3/4 - 30 18.40 18.29 18.37 Pg 36 - 16 45.73 45.48 45.67 BC 31/32 - 30 23.96 23.85 23.93 BC 1- 24 24.58 24.46 24.55 BC 1.29 - 24 31.96 31.83 31.93 BC 1.37 - 24 33.99 33.86 33.96 BC 1 7/16 - 24 35.70 35.57 35.67 BC 1.45 - 24 36.02 35.89 35.99 BC 1 9/16 - 24 38.88 38.75 38.85 ■ For miniature threads ■ For trapezoidal threads Unit：mm Unit：mm Size Minor diameter of internal threads（D1） Tap drill hole sizeMax.Min.(reference) Size Minor diameter of internal threads（D1） Tap drill hole sizeMax.Min.(reference) S0.4 × 0.1 0.330 0.304 0.32 Tr 10 × 2 8.236 8.000 8.2 S0.5 × 0.125 0.415 0.380 0.41 Tr 12 × 3 9.315 9.000 9.2 S0.6 × 0.15 0.502 0.456 0.49 Tr 12 × 2 10.236 10.000 10.2 S0.7 × 0.175 0.585 0.532 0.57 Tr 14 × 3 11.315 11.000 11.2 S0.8 × 0.2 0.665 0.608 0.65 Tr 16 × 4 12.375 12.000 12.3 S0.9 × 0.225 0.745 0.684 0.73 Tr 16 × 3 13.315 13.000 13.2 Tr 18 × 4 14.375 14.000 14.3 Tr 20 × 4 16.375 16.000 16.3 Tr 22 × 5 17.450 17.000 17.3 ■ For microscope objective lenses Tr 24 × 5 19.450 19.000 19.3 Unit：mm Tr 25 × 5 20.450 20.000 20.3 Size Minor diameter of internal threads（D1） Tap drill hole sizeMax.Min.(reference)Tr26 × 5 21.450 21.000 21.3Tr28 × 523.45023.00023.3 20.32W36 19.550 19.474 19.53 Tr 30 × 6 24.500 24.000 24.4 Technical-47