Torx key t5 t6 t8 t10 torx screwdriver star shaped head screwdriver

Torx key with an internal socket-head screw design. The cross-section resembles a star. Commonly used in automobiles, automated equipment, and computer components as it is resistant to wrench cam-out and so suitable for use in the types of powered tools used in production-line assembly. Ever Hardware provides custom made torx key and customizable packaging.
Torx screws are commonly found on automobiles, motorcycles, bicycle brake systems (disc brakes), hard disk drives, computer systems and consumer electronics. Initially, they were sometimes used in applications requiring tamper resistance, since the drive systems and screwdrivers were not widely available; as drivers became more common, tamper-resistant variants, as described below, were developed. Torx screws are also becoming increasingly popular in construction industries.
Torx security is a version known as Security Torx, Tamper-Resistant Torx (often shortened to Torx TR) or pin-in Torx contains a post in the center of the head that prevents a standard Torx driver (or a straight screwdriver) from being inserted. An External Torx version exists, where the screw head has the shape of a Torx screwdriver bit, and a Torx socket is used to drive it.

Properties of various Torx key
Size  Point-to-point distance   Maximum torque range  ~ E Torx
(in) (mm) (lb•ft) (N•m)
T1 0.031 0.81 0.01–0.02 0.02–0.03  
T2 0.036 0.93 0.05–0.07 0.07–0.09  
T3 0.046 1.1 0.10–0.13 0.14–0.18  
T4 0.05 1.28 0.16–0.21 0.22–0.28  
T5 0.055 1.42 0.32–0.38 0.43–0.51 E2
T5.5          
T6 0.066 1.7 0.55–0.66 0.75–0.90  
T7 0.078 1.99 1.0–1.3 1.4–1.7  
T8 0.09 2.31 1.6–1.9 2.2–2.6  
T9 0.098 2.5 2.1–2.5 2.8–3.4  
T10 0.107 2.74 2.7–3.3 3.7–4.5  
T15 0.128 3.27 4.7–5.7 6.4–7.7  
T20 0.151 3.86 7.74–9.37 10.5–12.7 E4
T25 0.173 4.43 11.7–14.0 15.9–19 E5
T27 0.195 4.99 16.6–19.8 22.5–26.9  
T30 0.216 5.52 22.9–27.6 31.1–37.4 E6
T35          
T40 0.26 6.65 39.9–48.0 54.1–65.1 E8
T45 0.306 7.82 63.4–76.1 86–103.2  
T47 GM-Style        
T50 0.346 8.83 97.4–117 132–158 E10
T55 0.44 11.22 161–189 218–256 E12
T60 0.519 13.25 280–328 379–445 E16
T70 0.61 15.51 465–516 630–700 E18
T80 0.69 17.54 696–773 943–1048 E20
T90 0.784 19.92 984–1094 1334–1483  
T100 0.871 22.13 1359–1511 1843–2048 E24

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Category Torx key
Finish Nickel plating
Length 15mm to 200mm
Material Stainless steel/carbon steel
Brand Ever Hardware
Place of origin China Mainland
Size option T1 – T100
Color Black/Brown or as request

Torx key t5 t6 t8 t10 torx screwdriver star shaped head screwdriver Ever Hardware Industrial Limited