In mechanical control cable systems, the cable head—also known as the control head or end fitting—is as vital as the cable itself. A Twist-Lock cable head provides manual locking via a quarter-turn T-handle mechanism and functions as the primary interface between the operator and the system.
This page focuses on the Twist-Lock control head as a component, offering insights into:
• Internal structure and locking mechanism
• Mounting styles and panel installation
• Output end configurations (threaded, grooved, U-fork)
• Key applications in real-world systems
Looking for complete cable assemblies? Visit the Phidix Twist-Lock Main Page.
Locking Mechanism: Internal Structure
The defining feature of a Twist-Lock cable head is its quarter-turn mechanical lock. When the T-handle is rotated, a locking collar engages with internal detents or grooves, effectively preventing movement until the handle is manually unlocked.
This mechanism eliminates position drift caused by:
• Engine vibrations
• Accidental bumps
• Rebound from spring-actuated systems
The lock holds securely without requiring additional springs or clamps.
Mounting & Installation Styles
Phidix offers multiple mounting solutions to accommodate various OEM and retrofit needs:
• Threaded Front Nut Mount – Reliable and easy to install
• Snap-In Plate Mount – Tool-free installation for faster assembly
• Rear Bracket Mount – Ideal for integration into pre-fabricated housings
Available handle options:
• Black T-handle (standard for general use)
• Red coded T-handle (for choke, PTO, or engine stop functions)
Output End Configurations
Phidix Twist-Lock heads can be paired with several output end designs to match different mechanical systems:
| Output End Type | Description |
| Threaded Rod | Ideal for PTO systems or brake linkage control |
| Grooved Pin | Suited for clevis or snap-fit connections |
| U-Fork | Quick coupling with actuator levers |
Custom pairings of inner core type, end fitting, and cable length are available upon request.
Common Applications
Twist-Lock cable heads are frequently used as modular locking interfaces in systems that require secure, manual position control. They are commonly found in:
• Diesel engine throttle cables
• Engine stop and fuel shutoff controls
• PTO activation mechanisms
• Choke knobs on marine and recreational vehicles
• Manual valve positioners in industrial systems
Additionally, they are offered as replacement end fittings, compatible with many standard push-pull cable assemblies.
Related Products & OEM Customization
Phidix offers a comprehensive selection of:
• Standalone Twist-Lock cable heads (no cable included)
• Complete cable assemblies featuring Twist-Lock handles
• OEM-ready configurations with customizable:
• Handle colors
• Locking tension settings
• Mounting types
• Output end styles
Learn more about our Twist-Lock End Fitting Options
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twist lock cable head end fitting guide Images
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