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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.

Specification

Driver Size	Ref. (mm)	JASO F116-97	JASO F116-97	JASO F116-97/TMH-640	TMH-643
Internal Drive		NEXT	NEXT	NEXT	NEXT
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

Driver Size	Ref. (mm)	JASO F116-97/TMH-610	JASO F116-97/TMH-645	JASO F116-97/TMH-615
External Drive		NEXT	NEXT	NEXT
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-..."

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