Star screwdriver security L shaped torx screwdriver torx plus wrench

Star screwdriver is also known as torx key. Torx keys 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 star screwdriver and customizable packaging.

Heat treating makes the star screwdriver hardened or high tensile. Heat treating is a group of industrial and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass. Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. 

Properties of various Star screwdriver
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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Categoryq Star screwdriver
Finish Heat treating & Galvanization
Type Torx & Torx Plus
Material Teflon/Brass/Stainless steel/carbon steel/Aluminum
Brand Ever Hardware
Place of origin China Mainland
Size option As request
Color White or as request

Star screwdriver security L shaped torx screwdriver torx plus wrench