Общий каталог PRECITOOL - страница 160

Taps Taps Product information Choice of the correct tap type Through hole Blind hole 13 Starting cut: Starting cut: Form B = with spiral point Form C, right hand spiral flute The spiral grooves guide the chips The spiral point guides the chips in the cutting direction. Through hole upwards out of the bore. Blind hole Tap overview Tap (centring) A with long section for Centring: through holesB with spiral point for through M3 ÷ M6 DIN 371M3 ÷ M6DIN 376M3 ÷ M6DIN 374 holes M3 ÷ M6 DIN 352 C with short section for blind M3 ÷ M6 DIN 2181 holes M3 ÷ M6 DIN 357 C with short section for blind M3 ÷ M10 DIN 2174 holes Full male centre Full male centre d1 thread diameter l1 total length d2 thread diameter l2 thread length d3 gate diameter l3 useful lengthl4 section length Reduced external centre Chamfer centring l square length k square dimension (to DIN 10, part 1) Full male centrCe entring: Full male centre Centre hole M8; M10 DIN 37C1entre hole M12 DIN 376 Thread types (selection series) Reduced external centre Chamfer centring Metric 60° NPT 60° Centre hole Centre hole 30° 30° Metric fine 1° 47' 60° Full male centreCentring: Full male centre M7; M9 DIN 371 M7 ÷ M10 DIN 376 ≥ M14 DIN 376 BSW Withworth UNC ≥ M7 DIN 374 55° 60° Reduced external c≥enMtre7 DINC3h5a2mfer centring ≥ M7 DIN 2181 ≥ M7 DIN 357 G. Whitworthpipe thread UNF ≥ M12 DIN 2174 55° 60° Centre hole Centre hole ISO trapezoidal Conduitthread 30° 80° www.precitool.de 13/155