Общий каталог Yamawa 2022 - 2023 - страница 982

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MinMin

MinMin 100%

MaxMax 78.2% 100%100%

M2 Taps M3 MaxMax Min

Taps

MaxLength of74.1%78.2%
engagement=9.1mm
【Length of engagement】
On "middle" engagement class, 7H class can be chosenInternal threads made by roll taps are
M4in case of "L" engagement length.different from those made by cutting
Internal threadstaps on the shape of minor dimameter.
TapsEngagement
Unit : mm
classificationEngagementD1D1
Unit : mm

Engagement length External threads Drill size *Hole size for thread forming taps

length classification Min Max

M5 (ref.) Min Max

S Short engagement length 4H 5H − S≦3（mm） Bored hole size 5.0 4.917 5.153

Taps 5.49 5.59

MNormal engagement length5H6H7H3＜M≦9（mm）Engagement ratio92.4%100%78.2%
Long engagement length9＜L（mm）Forming condition changes depending
L6H7H8Hon workpiece's Material and shape.

P=1.0mm D1 is minor diameter of JIS 6H(2nd Class) of internal threads Above is for customer's reference. M6 Taps

Tolerance area of tap's pitch diameter 【Thread class of cutting taps】

M8ClassPD tolerance
Taps【Pitch diameter】P220μｍ〜40μｍ
Diameter of imaginary cylinder or coneInternal threads
which makes equal the width of threadsP340μｍ〜60μｍ
and width of space between the threads
M10P2 P460μｍ〜80μｍ

Taps P3 P5 80μｍ〜100μｍ P4 P5 *Above shows the plus tolerance

M12 by setting PD basic size as "0". Taps Width of Width of threadsthreads 【Thread class of roll taps】 Width of space Width of space

between threadsbetween threads Class PD tolerance

-M8.5G664μｍ〜76μｍ
M1TapsPitch PitchG6G6
diameterdiameterG776μｍ〜89μｍ
G7G7
G8G889μｍ〜102μｍ
M9-M24Taps
*Above shows the plus tolerance
Basic size of pitch diameterby setting PD basic size as "0".
5.350mm
-200μm-150μm-100μm-50μm+50μm+100μm+150μm+200μm
M25-M48Taps
ⅡG6 G7 G8
00P1P2P3P4P5
M50-M1TapsTolerance of dies is theP2
target of external threads

Class of dies 6g external threads(-138〜-26) 6H internal threads(0〜150)

For UnifiedⅡSolid diesNRNRGRGRGPGPNPNP
threads
Taps
P1Solid diesJIS 2Class external threads(-130〜-30)JIS 2Class intenal threads(0〜120)
P2for Auto LatheWRWRGRGRGPGPWPWP

For Whitworththreads Relative position of PD tolerance area of external threads, internal threads, taps and gages. Taps

For Screw threads used (–) ← Basic size of pitch diameter → (+) on sewing machines（SM） Taps 5.350mm Unit : μm Unit : μm Ring gage pitch diameter (for external threads inspection) Plug gage pitch diameter (for internal threads inspection) For Pipe threadsTaps

NR6g-152 〜 -138GR6g-35 〜 -21GP6H7 〜 17NP6H150 〜 160
WRⅡ-130 〜 -122GRⅡ-42 〜 -34GPⅡ4 〜 12WPⅡ112 〜 120
For AmericanNR : NOT GO ring gageGR : GO ring gageGP : GO plug gageNP : NOT GO plug gage

pipe threadsTaps WR : NOT GO working ring gage WP : NOT GO working plug gage Unit : mm Unit : mm Accuracy of external threads Accuracy of internal threads

For Miniaturethreads

Taps Major diameter Pitch diameter Minor diameter Major diameter Pitch diameter Minor diameter

6g5.794〜5.9745.212〜5.324−6H−5.350〜5.5004.917〜5.153
JIS 2class5.820〜5.9705.220〜5.320〜4.743JIS 2class−5.350〜5.470 4.917〜5.153