Typical Dimensional & Torque Specifications
of TORX Tools For use with Internal
Socket Head Type TORX Screws

See Standard Torx Tools Index  Point to Point  Dimensions
Size	Inch P to P	Metric P to P	Maximum Torque Range
T1	.031	.81mm	.02 to .03 N m
T2	.036	.93mm	.07 to .09 N m
T3	.046	1.10mm	.14 to .18 N m
T4	.050	1.28mm	.22 to .28 N m
T5	.055"	1.42 mm	.43  to .51 N m
T6	.066"	1.70 mm	.75 to .9 N m
T7	.078"	1.99 mm	1.4 to 1.7 N m
T8	.090"	2.31 mm	2.2 to 2.6 N m
T9	.098"	2.50 mm	2.8 to 3.4 N m
T10	.107"	2.74 mm	3.7 to 4.5 N m
T15	.128"	3.27 mm	6.4 to 7.7 N m
T20	.151"	3.86 mm	10.5 to 12.7 N m
T25	.173"	4.43 mm	15.9 to 19 N m
T27	.195"	4.99 mm	22.5 to 26.9 N m
T30	.216"	5.52 mm	31.1 to 37.4 N m
T40	.260"	6.65 mm	54.1 to 65.1 N m
T45	.306"	7.82 mm	86 to 103.2 N m
T50	.346"	8.83 mm	132 to 158 N m
T55	.440"	11.22 mm	218 to 256 N m
T60	.519	13.25 mm	379 to 445 N m
T70	.610	15.51 mm	630 t0 700 N m
T80	.690	17.54 mm	943 to 1048 N m
T90	.784	19.92 mm	1334 to 1483 N m
T100	.871	22.13 mm	1843 to 2048 N m

1 N m = 8.851 lbf • in

Typical Dimensional Specifications of TORX Sockets or
Nut drivers For use with External TORX Head Type Bolts.

Internal Measurement Point to Point
Socket E-Size	Inch	Metric
E- 4	.15"	3.8mm
E- 5	.18"	4.7mm
E- 6	.22"	5.6mm
E- 7	.24"	6.1mm
E- 8	.29"	7.4mm
E-10	.36"	9.3mm
E-12	.43"	11.1mm
E-14	.50"	12.8mm
E-16	.57"	14.7mm
E-18	.65"	16.6mm
E-20	.72"	18.4mm
E-24	.87"	22.1mm

TORX SCREW SIZE CHART

Screw Size	Torx Socket Set Screw	Torx Socket Cap Screw	Torx Pan Head Screw	Torx Flat Head Screw	Torx Fillister Head Screw	Torx Truss Head Screw	Torx Oval Head Screw	Torx Hex Head Screw	Torx Internal Washer Head Screw
#2	T3	-	T7	T6	-	-	-	-	T7
#3	T5	-	T8	T7	-	-	-	-	T8
#4	T6	T10	T9	T8	T9	-	-	T9	T9
#5	T7	T10	T10	T9	T10	-	T10	T10	T10
#6	T7	T15	T15	T10	T15	T10	T15	T15	T15
#8	T8	T25	T20	T15	T20	T15	T20	T20	T20
#10	T10	T27	T25	T20	T25	T20	T25	T25	T25
#12	T10	T27	T27	T25	T27	T25	T27	T27	T27
1/4	T20	T30	T30	T27	T30	T27	T30	T30	T30
5/16	T27	T45	-	T40	T40	T30	T40	T40	-
3/8	T30	T50	T45	T40	T45	T40	T45	T45	-
7/16	T40	T55	T50	T50	T50	T45	T50	-	-
1/2	T45	T55	T55	T55	T55	T50	T50	-	-

TORX PLUS SCREW SIZE CHART
See Torx Plus Tool Index

Drive Size	Pan Head		Flat Head		Socket Head		Socket Button
	Inch	Metric	Inch	Metric	Inch	Metric	Inch	Metric
1IP	---	M0.9	---	M0.9 & M1	---	M0.9	---	---
2IP	---	M1	---	M1.2	---	M1	---	---
3IP	---	M1.2	---	M1.4	---	M1.2	---	---
5IP	---	M1.4 & M1.6	---	M1.6 & M1.8	---	M1.4 & M1.6	---	---
6IP	#1	M1.8 & M2	#2	M2	#0	M1.8 & M2	#2	---
7IP	#2	---	---	---	#1	---	#3	---
8IP	#3	M2.5	#3 & #4	M2.5	#2 & #3	M2.5	#4	M3
10IP	#4 & #5	M3	#5 & #6	M3	#4 & #5	M3	#5 & #6	M3.5
15IP	#6	M3.5	#8	M3.5	#6	M3.5	#8	M4
20IP	#8	M4	#10	M4	---	---	---	---
25IP	#10	M5	#12	M5	#8	M4	#10	M5
27IP	#12	---	1/4	---	#10	M4.5 & M5	1/4	M6
30IP	1/4	M6	---	M6	1/4	M6	---	---
40IP	5/16	M8	5/16	M8	---	M7	5/16	M8
45IP	3/8	---	3/8	---	5/16	M8	3/8	M10
50IP	7/16	M10	7/16 & 1/2	M10	3/8	M10	---	---
55IP	1/2	M12	9/16	M12	7/16	M12	1/2	M12
55IP	---	---	5/8	---	1/2	---	---	M14
60IP	---	---	3/4	---	9/16	M14	5/8	M16
70IP	---	---	---	---	5/8	M16	---	---
80IP	---	---	---	---	3/4	M18	---	---
90IP	---	---	---	---	---	M20	---	---
100IP	---	---	---	---	7/8 & 1	M22 & M24	---	---

See Standard Torx Tools Index

See Security Torx Tools Index

See Torx Plus Tool Index

Go To Main Tool Index

 

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