Torx vs. Torx Plus
Comparing 2 standards across 11 specifications. 11 key differences identified.
Torx (standardized as Hexalobular Internal under ISO 10664) is a 6-lobed star-shaped screw drive system developed by Camcar Textron in 1967. Engineered with a low 15-degree drive angle and curved lobes, it eliminates cam-out entirely, delivers exceptional torque transfer, and drastically extends tool bit lifespan across automotive, computing, and construction hardware.
Torx Plus is an advanced evolution of the hexalobular star drive introduced by Textron Fastening Systems in the 1990s. Featuring squarer, elliptical lobes and a true 0-degree drive angle, it increases torque transmission capacity by up to 35% and extends assembly tool bit life by up to 100% in industrial manufacturing.
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Drive Geometry
|
6-pointed star with rounded circular lobes | 6 elliptical lobes with flattened lobe tips |
|
Drive Angle
|
15 degrees (near-perpendicular torque vector) | 0 degrees (true perpendicular tangential drive vector) |
|
International Standard
|
ISO 10664 (Hexalobular internal driving feature for bolts and screws) | — |
|
Cam-Out Tendency
|
Zero (Radial drive force completely eliminates axial climb) | — |
|
Common Sizing Tiers
|
T1–T5 (smartphones), T6–T10 (laptops/electronics), T15–T25 (wood/auto), T30–T50 (chassis/structural) | — |
|
External Variant
|
E-Torx (Inverted star socket for high-torque automotive bolts, E4 to E24) | — |
|
Proprietary Standard
|
— | Acument Global Technologies (formerly Camcar Textron) |
|
Torque Transmission Gain
|
— | Up to 35% higher torque than standard Torx |
|
Tool Bit Lifespan Gain
|
— | 100% to 200% longer drive bit life |
|
Sizing Notation
|
— | IP (Internal Torx Plus: 1IP to 100IP) and EP (External Torx Plus) |
|
5-Lobe Security Variant
|
— | Torx Plus Security (5-lobe star with central tamper pin, 8IPR to 50IPR) |