Overall Thread Position on Shank Size of Length of
length length basic dia. dia. square square

L ℓ ℓg Ds K ℓk


(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
LS-NPT
Long Shank Hand Taps for American Taper Pipe Threads
Specification


(for through hole)
E
NPT 3/4 ~
Recommended Tapping Speeds depending on Materials


(for through hole)
Medium carbon steels

5
For icon explanation, refer to P.50


Hand Taps
TYPE:1 TYPE:2


Carbide Taps
Cemented
g g


Segment:1G


Roll Taps
Basic
Size Class Code Chamfer major dia L ℓ ℓg Ds K ℓk No. of Type Stock
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) flutes
For American Pipe Threads
NPT 1/16-27 ANSI G TNPT01LL10 3P 7.770 100 17 12 8 6 9 4 1 △


Simple Inspection Tools
Special Thread Taps
TNPT02LL10 100
NPT 1/8-27 ANSI G 3P 10.117 19 12.05 8 6 9 4 2 △
TNPT02LL15 150
TNPT04OL10 100
NPT 1/4-18 ANSI G 3P 13.426 28 17.45 11 9 12 4 2 △
TNPT04OL15 150


Pipe Taps
TNPT06OL10 100
NPT 3/8-18 ANSI G 3P 16.866 28 17.65 14 11 14 4 2 △
TNPT06OL15 150
NPT 1/2-14 ANSI G TNPT08QL15 3P 20.980 150 35 22.85 18 14 17 4 2 △
NPT 3/4-14 ANSI G TNPT12QL15 3P 26.325 150 35 22.95 23 17 20 4 2 △
NPT 1 -11.5 ANSI G TNPT16TL15 3P 32.934 150 45 27.4 26 21 24 5 2 △
Thread Mills
Dies
Center Drills
Centering Tools


JIS
◎=Standard ○=Semi standard △=Made to order
Pipe-44
For improvement, spec may change without advance notice. 593