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

L ℓ ℓn ℓs Ds K ℓk
Spiral Pointed Taps Spiral Fluted Taps Spiral Fluted Taps
(for blind hole)


MHRZ
Roll Taps for Carbon Steels of Middle Hardness
Specification
(for through hole)


■Stable tapping in thermal refined steels ( ~ 35HRC).
Coating 2D

Recommended Tapping Speed depending on Materials
(for through hole)


High carbon steels Alloy steels Thermal re ned steels

10 30 10 30 10 20
〜 〜 〜

~35HRC
For icon explanation, refer to P.50
Hand Taps


TYPE:1 TYPE:2
Cemented
Carbide Taps


Segment:1J
Roll Taps


Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock
(mm) (mm) (mm) (mm) (mm) (mm) (mm)

RY6.0M8OCTP 4P
M6 × 1 G8 62 11 26 33 6 4.5 7 5 1 ◎
RY6.0M8OCTB 2P
Special Thread Taps
Pipe Taps Simple Inspection Tools


RY8.0N8OCTP 4P
M8 × 1.25 G8 70 12 - 36 6.2 5 8 6 2 ◎
RY8.0N8OCTB 2P
RY010O8OCTP 4P
M10 × 1.5 G8 75 13 - 38 7 5.5 8 8 2 ◎
RY010O8OCTB 2P
RY010N8OCTP 4P
M10 × 1.25 G8 75 13 - 38 7 5.5 8 8 2 ◎
RY010N8OCTB 2P
RY012O8OCTP 4P
M12 × 1.5 G8 82 15 - 42 8.5 6.5 9 8 2 ◎
RY012O8OCTB 2P
Thread Mills


RY012N8OCTP 4P
M12 × 1.25 G8 82 15 - 42 8.5 6.5 9 8 2 ◎
RY012N8OCTB 2P
RY014O9OCTP 4P
M14 × 1.5 G9 88 18 - 45 10.5 8 11 8 2 ◎
RY014O9OCTB 2P
Number of oil grooves : M6=5, M8=6, M10 and larger=8
Dies


For M6 and smaller, external centers of 2 thread chamfer taps are removed.
Center Drills
Centering Tools


JIS
RO-27 ◎=Standard ○=Semi standard △=Made to order
522 For improvement, spec may change without advance notice.