
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-SP-S-NPT
Long Shank Spiral Fluted Taps for American Taper Pipe Threads, Short (ℓg) Type
Specification
(for through hole)
E
NPT 3/4 ~
Recommended Tapping Speeds depending on Materials
(for through hole)
ow carbon steels
TYPE:1
〜
5
For icon explanation, refer to P.50
Hand Taps
g
Segment:1G
Carbide Taps
Cemented
Basic
L ℓ ℓg Ds K ℓk No. of
Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) flutes Type Stock
(mm)
For American Pipe Threads
NPT 1/8-27 ANSI G SSNPT02LL10 2.5P 10.117 100 16.5 10.5 8 6 9 3 1 △
△
Roll Taps
NPT 1/4-18 ANSI G SSNPT04OL15 2.5P 13.426 150 19.5 12.5 11 9 12 3 1
NPT 3/8-18 ANSI G SSNPT06OL15 2.5P 16.866 150 21 14 14 11 14 3 1 △
NPT 1/2-14 ANSI G SSNPT08QL15 2.5P 20.980 150 27 17 18 14 17 4 1 △
NPT 3/4-14 ANSI G SSNPT12QL15 2.5P 26.325 150 29 19 23 17 20 4 1 △
Simple Inspection Tools
Special Thread Taps
Pipe Taps
Thread Mills
Dies
Center Drills
Centering Tools
JIS
◎=Standard ○=Semi standard △=Made to order
Pipe-46
For improvement, spec may change without advance notice. 595