Обший каталог Yamawa 2016 - 2017 - страница 541

(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
CHECK PINS Obtainable from
Video site shown in right
Please check the hole size before tapping!


(for through hole)
Let's check the hole size before tapping 6H class internal threads of M6×1 by using Check-pin for cutting taps.

■ How to use CPC-S (Straight type)


(for through hole)
STEP
Check the minor dia. for M6×1 6H internal thread
1


Hand Taps
STEP
Size of the Check-pin for M6×1 Select the nearest sizes of the Check-pins
2 Size L ℓ DS
ｄ1 ｄ2
（Percentage of thread （Percentage of thread
to the max and min size of minor dia of 6H
internal thread by checking the table listed
on the left side.


Carbide Taps
Cemented
engagement） engagement）
4.917 （100％） 5.026（90％） ⇒ ①4.917
（100％）and ②5.134
（80％）
4.972 （95％） 5.080（85％）
M6 ×1 73 16.5 6 5.026 （90％） 5.134（80％） Depending on the feature of work-piece
5.080 （85％） 5.188（75％）
materials, it is beneficial to tapping to make
5.134 （80％）
the hole size before tapping as large as
5.242（70％）
possible and within the tolerance.


Roll Taps
STEP
Insert the Check-pins ① and ②, selected in step 2.
3

Simple Inspection Tools
Special Thread Taps
① 4.917 ② 5.134 The hole is finished within minor dia of
（100％） （80％） GOOD 6H class internal threads.


Pipe Taps
1.5
2 You can easily check hole
Check-pin smoothly goes Check-pin doesn't go
depth by the three lines on its
2.5
into the bottom of the hole. into the hole.
pin as well.

Thread Mills
■ How to use CPC-T (Taper type)
ｄ1 ｄ2
Dies

Product
Size L ℓ DS （Percentage of thread （Percentage of thread （ℓ1） （ℓ2）
code
engagement） engagement）
M6 ×1 61.5 17 6 4.917 （100％） 5.153（78％） CPCT6.0M 3.8 12.8


× BAD
× BAD GOOD
Center Drills


Acceptable
range
Minimum Ma imum
Centering Tools


Bad hole : Check-pin Bad hole : Check-pin goes line line
4.917 5.153
doesn't go into the hole into the hole over the 100 78
over the minimum line. maximum line.

JIS
ST-14
For improvement, spec may change without advance notice. 537