Обший каталог Yamawa 2016 - 2017 - страница 311

Overall Thread Shank Size of Length of
length length dia. square square

L ℓ Ds K ℓk


(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
NPT-CI
Hand Taps for American Taper Pipe Threads for Cast Irons
Specification


(for through hole)
■Suitable for hard and abrasive materials such as cast irons.
E
Nitride
NPT 3/4 ～
Recommended Tapping Speed depending on Materials


(for through hole)
Cast irons Ductile cast irons
〜
5 〜
5
(m/min) (m/min)
For icon explanation, refer to P.50


Hand Taps
TYPE：１ TYPE：２


Carbide Taps
Cemented
Segment：1G


Roll Taps
L ℓ Projection Ds K ℓk No. of
Size Class Code Chamfer Type
(inch) (inch) (inch) (inch) (inch) (inch) flutes
For American Pipe Threads
Y83201 0.437 0.328 1
NPT 1/8-27 ANSI G 3P 2.125 0.75 0.312 0.375 4
Y83202 0.312 0.234 2


Simple Inspection Tools Pipe Taps
NPT 1/4-18 ANSI G Y83203 3P 2.437 1.062 0.459 0.562 0.421 0.437 4 1
NPT 3/8-18 ANSI G Y83204 3P 2.562 1.062 0.454 0.7 0.531 0.5 4 1
NPT 1/2-14 ANSI G Y83205 3P 3.125 1.375 0.579 0.687 0.515 0.625 4 2
NPT 3/4-14 ANSI G Y83206 3P 3.25 1.375 0.565 0.906 0.679 0.687 5 2
NPT 1-11.5 ANSI G Y83207 3P 3.75 1.75 0.678 1.125 0.843 0.812 5 2
NPT 1 1/4-11.5 ANSI G Y83208 3P 4 1.75 0.686 1.312 0.984 0.937 5 2
NPT 1 1/2-11.5 ANSI G Y83209 3P 4.25 1.75 0.699 1.5 1.125 1 7 2
NPT 2-11.5 ANSI G Y83210 3P 4.5 1.75 0.667 1.875 1.406 1.125 7 2

Thread Mills
Dies
Center Drills
Centering Tools


ANSI
Pipe-6
307