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

L ℓ ℓn ℓs Ds K ℓk


(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
N-CT-PO
Spiral Pointed Carbide Taps
Specification


(for through hole)
Recommended Tapping Speeds depending on Materials


(for through hole)
Wrought aluminum Aluminum alloy castings
TYPE:1
10 20 10 20
〜 〜
(m/min) (m/min)
For icon explanation, refer to P.50


Hand Taps
TYPE:2 TYPE:3


Carbide Taps
Cemented
Roll Taps
Segment:1L
L ℓ ℓn Ds K ℓk No. of
Size Class Code Chamfer Type Stock


Simple Inspection Tools
Special Thread Taps
(mm) (mm) (mm) (mm) (mm) (mm) flutes
For Metric Threads
M3 × 0.5 P3 PCNR3.0G 5P 46 11 - 4 3.2 6 3 1 △
M4 × 0.7 P3 PCNR4.0I 5P 52 13 - 5 4 7 3 1 △
M5 × 0.8 △


Pipe Taps
P3 PCNR5.0K 5P 60 16 - 5.5 4.5 7 3 1
M6 × 1 P3 PCNR6.0M 5P 62 19 - 6 4.5 7 3 2 △
M8 × 1.25 P3 PCNR8.0N 5P 70 22 - 6.2 5 8 3 3 △
M10 × 1.5 P4 PCNS010O 5P 75 24 - 7 5.5 8 3 3 △
M12 × 1.75 P4 PCNS012P 5P 82 30 - 8.5 6.5 9 3 3 △
Thread Mills
Dies
Center Drills
Centering Tools


JIS
CT-8
◎=Standard ○=Semi standard △=Made to order
For improvement, spec may change without advance notice. 485