14. Tap, Thread Limits ■ for Parallel Pipe Threads (PF G) unit: mm ■ for Parallel Pipe Threads (PS·Rp) unit: mm Production data Major Pitch Diameter Minor Major Pitch Diameter Minor Diameter Diameter Diameter Diameter Size Class Upper Lower Size Class Upper Lower Basic Size Basic Size Tolerance Tolerance Basic Size Basic Size Basic Size Tolerance Tolerance Basic Size (μm) (μm) (μm) (μm) + + - - PF 1/16 - 28 7.723 7.142 40 20 6.561 PS 1/16 - 28 7.723 7.142 30 50 6.561 PF 1/8 - 28 9.728 9.147 40 20 8.566 PS 1/8 - 28 9.728 9.147 30 50 8.566 PF 1/4 - 19 13.157 12.301 50 25 11.445 PS 1/4 - 19 13.157 12.301 50 75 11.445 PF 3/8 - 19 16.662 15.806 50 25 14.950 PS 3/8 - 19 16.662 15.806 50 75 14.950 PF 1/2 - 14 20.955 19.793 55 25 18.631 PS 1/2 - 14 20.955 19.793 85 115 18.631 PF 5/8 - 14 22.911 21.749 55 25 20.587 PS 5/8 - 14 22.911 21.749 85 115 20.587 PF 3/4 - 14 26.441 25.279 55 25 24.117 PS 3/4 - 14 26.441 25.279 85 115 24.117 PF 7/8 - 14 30.201 29.039 55 25 27.877 PS 7/8 - 14 30.201 29.039 85 115 27.877 PF 1 - 11 33.249 31.770 60 30 30.291 PS 1 - 11 33.249 31.770 120 150 30.291 PF 1 1/4 - 11 41.910 40.431 65 30 38.952 PS 1 1/4 - 11 41.910 40.431 115 150 38.952 PF 1 1/2 - 11 47.803 46.324 65 30 44.845 PS 1 1/2 - 11 47.803 46.324 115 150 44.845 PF 2 - 11 59.614 58.135 75 35 56.656 PS 2-11 59.614 58.135 105 145 56.656 PF 2 1/2 - 11 75.184 73.705 80 40 72.226 PS 2 1/2 - 11 75.184 73.705 140 180 72.226 PF 3 - 11 87.884 86.405 85 40 84.926 PS 3 - 11 87.884 86.405 135 180 84.926 PF 3 1/2 - 11 100.330 98.851 85 40 97.372 PS 4 - 11 113.030 111.551 135 180 110.072 PF 4 - 11 113.030 111.551 85 40 110.072 ■ for Taper Pipe Threads (PT Rc) unit: mm ■ for Miniature Screw Threads unit: mm Major Diameter Pitch Diameter Minor Diameter Major Pitch Diameter Minor Size Diameter Diameter Basic Size Basic Size Basic Size Size Class Upper Lower Basic Size Basic Size Tolerance Tolerance Basic Size PT 1/16 - 28 7.723 7.142 6.561 (μm) (μm) + + PT 1/8 - 28 9.728 9.147 8.566 S 0.5 × 0.125 - 0.500 0.419 15 7 0.380 PT 1/4 - 19 13.157 12.301 11.445 - 15 7 PT 3/8 - 19 16.662 15.806 14.950 S 0.6 × 0.15 0.600 0.503 0.456 GS2 23 13 PT 1/2 - 14 20.955 19.793 18.631 - 20 10 PT 5/8 - 14 22.911 21.749 20.587 S 0.7 × 0.175 0.700 0.586 0.532 GS3 28 18 PT 3/4 - 14 26.441 25.279 24.117 - 20 10 PT 7/8 - 14 30.201 29.039 27.877 S 0.8 × 0.2 0.800 0.670 0.608 GS3 28 18 PT 1 - 11 33.249 31.770 30.291 - 20 10 PT 1 1/8 - 11 37.897 36.418 34.939 S 0.9 × 0.225 0.900 0.754 0.684 GS4 33 23 PT 1 1/4 - 11 41.910 40.431 38.952 PT 1 1/2 - 11 47.803 46.324 44.845 PT 1 3/4 - 11 53.746 52.267 50.788 PT 2 - 11 59.614 58.135 56.656 PT 2 1/4 - 11 65.710 64.231 62.752 Information Technical PT 2 1/2 - 11 75.184 73.705 72.226 PT 3 - 11 87.884 86.405 84.926 PT 3 1/2 - 11 100.330 98.851 97.372 PT 4 - 11 113.030 111.551 110.072 Technical-32 803