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Products  >  Frangibolt
Frangibolt Concept

Standard Frangibolts

Custom Frangibolts

Temperature Sensors


Standard Assembly



Instrumented Fasteners

Grip Length


Switch Washers

Lock Nuts

Reset Tools


Video Demos

TiNi Aerospace's Frangibolt family of actuators is designed for deployment of a wide variety of stowed appendages including solar panels, antennae, cover doors, and various appendages. The principle of operation is simple: a Shape Memory Alloy (SMA) cylinder elongates when heated up to fracture a bolt element thereby achieving separation of two or more components. The Frangibolt actuator comprises of a cylinder of Nitinol (Nickel-Titanium) SMA and a specially designed (integrated) heater. The family of actuators shown is designed to release loads up to 20,000 lbf.
  • Flight Qualified
    Since its outer space debut aboard the spacecraft Clementine (1994), the Frangibolt has been qualified and used on numerous other space applications.

  • NEA (Non-Explosive Actuators)
    The Frangibolt is safe to use and requires no special precautions in handling, usage or transport. It is also insensitive to ESD (Electro-Static Discharge) and EMI (Electro- Magnetic Interference)

  • Safe Usage and Operation
    The actuator is simply incorporated in the releasable joint using the specially notched fastener and pre-loaded to the prescribed torque.

  • Redundant
    Each Frangibolt incorporates a redundant heater which is capable of independently functioning the actuator.

  • Reusable and Reliable
    The actuator may be used numerous times during acceptance and system level testing.

  • Cost Efficient
    Due to its relative simplicity, TiNi Aerospace is able to provide the Frangibolt at a significantly lower price than comparable devices.

TiNi Aerospace offers a wide range of Frangibolt actuators ranging in size from a #4 screw to a inch bolt. These are routinely customized to meet customer requirements. Some of the custom embodiments have been highlighted under the custom Frangibolt section.

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