FRANGIBOLT PRODUCTS Actuator FC6-32-7SR2 Actuator FC4-24-10SR2 Actuator FC3-20-16SR2 Actuator FC2-16-31SR2 Frangibolt Washers Frangibolt Fasteners Frangibolt Lock Nuts Compression Fixture Frangibolt Switch-Washer Frangibolt Enclosures Frangibolt Application Examples	Frangibolt® Actuator FC4-24-10SR2 The 1/4" Frangibolt is the original actuator size developed for the Naval Research Laboratory and flown on the Clementine spacecraft in February of 1994. The FC4-24-10SR2 is designed to operate with any standard NAS 1/4" notched bolt or stud 1. The actuator is reloaded by simply re-compressing the Nitinol cylinder after each actuation cycle. This may be done using any standard laboratory press or using TiNi's portable compression tool FBT-CT2. Frangibolt model FC4-24-10SR2 may be purchased with either a thermocouple or an RTD (Resistive Temperature Detector) by adding a TC or RTD to the part number, respectively. 1 TiNi Aerospace must provide the specially notched Titanium fastener. This is largely application-dependent and is readily manufactured to customer specification. See Fastener Specification Sheet.   Function Time 2 (@ 23º C) Specifications Max Load Support & Release 11250 N (2500 lb-f) Max Joint Length 6.35 cm (2.5 in) Operational Voltage 22 to 36 Vdc   Minimum Operating Temp. -65 oC (-85  oF) Maximum Operating Temp.2 +80 oC (176 oF) Heater Resistance  10 Ohms   Mass 50 gm (1.76 oz) Power Consumption  80 Watts  @ 28 Vdc Life Cycles  60 Cycles Min.   Features: Redundant Heater   Reusable   TC or RTD Sensor
		2 Note that the function times shown above are for the higher transition temperature "FC" series Frangibolt Actuators which actuate at roughly 100°C. TiNi Aerospace also manufactures a line of "FB" series Frangibolt actuators which have a lower +75°C actuation temperature and therefore have a ~25% faster function time. Selection between the two should be based on maximum operating temperature.

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