NAGAHORI INDUSTRY CO., LTD. is a leading manufacturer of Quick Couplings, Impact Sockets and Screwdriver Bits. This is a page of TORX® Tools.
NAC
[Nagahori Industry Co., Ltd.]

Home > TORX® Tools >Internal&External drive selection guides

Internal & External drive selection guides

Internal Drive
External Drive

Please confirm the suitable driver size for the thread size. This guides show the recommended driver size for the most common types of screws and bolts. There are exceptions, such as when the customer's specifications are special.

Internal & External

Specification

 

Internal Drive

JASO F116-97

NEXT

JASO F116-97

NEXT

JASO F116-97/TMH-640

NEXT

TMH-643

NEXT

Driver Size Ref.

Ref.
(mm)
JASO F116-97 JASO F116-97 JASO F116-97/TMH-640 TMH-643
T5 1.37       M2.5
T6 1.65 M2     M3
T8 2.30 M2.5   (M2.5) M4
T10 2.72 M3   (M3) M5
T15 3.26 M3.5   (M3.5)  
T20 3.84 M4 , M4.5     M6
T25 4.40 M5 M5 (M4) M7
T27 4.96     (M4.5) , M5 M8
T30 5.49 M6 M6 M6  
T40 6.60 M8 M8 (M7) M10
T45 7.77     M8 M12
T50 8.79   M10 M10 M14
T55 11.17   M12 , M14 M14 , (M12) M16 , M18
T60 13.20   M16 M16 , (M14) M20

External Drive

JASO F116-97/TMH-610

NEXT

JASO F116-97/TMH-645

NEXT

JASO F116-97/TMH-615

NEXT

Driver Size Ref.


Ref.
(mm)
JASO F116-97/TMH-610 JASO F116-97/TMH-645 JASO F116-97/TMH-615
E5 4.72 (M4)   M6 , (M6.3)
E6 5.69 M5 M3 (M7)
E7 6.17     M8
E8 7.47 M6 , (M7) M4 M10
E10 9.37 M8 (M4.5) , M5  
E12 11.12 M10 , (M11) M6 (M14)
E14 12.85 M12 (M7) (M16)
E16 14.71   M8 (M20)
E18 16.64 M14 M10  
E20 18.41 M16 M12 (M24)

Attention
The inside of ( ) is the size of "TMH-..."

nac-corp
is official licensee of Acument Intellectual Properties, LLC
Torx® , Torx Plus®
are registered trademarks of Acument Intellectual Properties, LLC

 

NAC
[NAGAHORI INDUSTRY CO.,LTD.] Contact Home Site Map Japanese Contact