TORX PLUS® Drive System – Comparison to Other Drive Systems

Proven to outperform and outlast every other screw and bolt drive system available today.

Slotted - Tool misalignment is almost certain, which damages the drive bit and limits its life - Not appropriate for automated assembly recess is open at both ends, allowing tool to slip out tool must be turned up to 90° to align with recess tool is difficult to align fully in recess, limiting transmission of torque Tool slippage can cause damage to tool, fastener, and application Hex - Allows high torque transmission, but can fail quickly - 60° drive angle is inefficient points of contact cause stress risers to develop 60° drive angle is inefficient   contact points round off from driving pressure Tool and fastener damage is common Cruciform (includes Phillips, ACR®, Phillips II and Pozidriv®) - Driver will self-align, but is difficult to keep fully engaged - Excessive end-load requirements reduce bit life and can cause worker fatigue or injury View test  results driving force is carried up sloped sides, forcing driver up and out of recess (camout)  sides are sloped to align driver bit end load to counteract camout, additional force (end load) must be placed against the driver proper tool engagement is difficult, limiting transmission of torque   Concentrated stress can crack bit and/or damage fastener TORX® Drive - Allows high torque transmission - 15° drive angle still permit a small amount of radial stress, which can reduce bit life circular geometry increases drive bit engagement 15° drive angle   straight sidewalls prevent camout and lessen end load requirements as compared to cruciform systems The straight sidewalls of the TORX Drive prevent camout, but its 15° drive angle prevents full engagement of the drive bit and fastener
TORX PLUS® Drive - Allows high torque transmission - Virtually eliminates camout - Reduces tool slippage and application damage - Reduces drive bit wear, extending tool life - Reduces fatigue and muscular stress during manual assembly	True 0° drive angle Little or no end load is required to keep driver engaged in recess Ensures optimal torque transmission and required clamp load Reduces fatigue and muscular stress Straight, vertical sidewalls virtually eliminate camout Maximizes engagement between driver and fastener Completely encloses driver bit, reducing tool slippage Spreads driving forces over larger area
Comparison Chart
Drive System Benefits Slotted Hex Cruciform TORX Drive TORX PLUS Drive Minimizes tool slippage   x   x x Appropriate for automatic assembly   x x x x Maximizes tool engagement         x Drive angle na 60° na 15° 0° Broad contact surface       x x Minimal camout   x   x x Minimal end load requirements   x   x x High torsional strength   x (external only)   x x Reduces radial stress         x Lengthens tool bit life         x Tooling readily available x x x x x
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