Обший каталог Yamawa 2016 - 2017 - страница 541

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CHECK PINS

Obtainable from

Please check the hole size before tapping! Video site shown in right

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)

STEP

1 Check the minor dia. for M6×1 6H internal thread

STEP

2Size of the Check-pin for M6×1Select the nearest sizes of the Check-pins
to the max and min size of minor dia of 6H
internal thread by checking the table listed
ｄ1ｄ2
ℓ（（on the left side.
SizeLDSPercentage of threadPercentage of thread
engagement）engagement）
4.917（100％）5.026（90％）⇒ ①4.917（100％） and ②5.134（80％）
4.972（95％）5.080（85％）
M6 ×17316.565.026（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％）5.242（70％）the hole size before tapping as large as

possible and within the tolerance.

STEP

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

① 4.917② 5.134The hole is finished within minor dia of
（100％） （80％）GOOD6H class internal threads.

1.5 2

Check-pin smoothly goes Check-pin doesn't go 2.5

into the bottom of the hole. into the hole.

You can easily check hole

depth by the three lines on its

pin as well.

  • How to use CPC-T (Taper type)

ｄ1 ｄ2

ℓ （ （ Product （ℓ ） （ℓ ）

Size L DS Percentage of thread Percentage of thread 1 2

））code
engagementengagement

M6 ××161.5 17 6 4.917×（100％） 5.153（78％） CPCT6.0M 3.8 12.8

BAD BAD GOOD

Acceptable range Minimum Ma imum

Bad hole : Check-pinBad hole : Check-pin goeslineline
4.9175.153
doesn't go into the holeinto the hole over the10078

over the minimum line. maximum line.