SEPARATION NUT

RELEASE NUT | SEP NUT

We are a global leader in pyrotechnic Hold Down Release Mechanisms (HDRM) for space, aircraft and subsea applications. Whether in space, on aircraft or in the sea, dependability is required for mission critical systems needing release mechanisms that are designed and developed for low shock, highly reliable separation nuts for applications in submarine, launch vehicle, satellite, and payload systems.  An  example would be a HDRM for CubeSat and SmallSat launches. Our Mechanisms are custom made to meet your mission requirements, from the separation nut size to the specific materials, the success of your application is at the center point of our design.

Interested in our Separation Nut?

We would love to hear about your program and how we may help.

HOW SEPARATION NUTS WORK

Designed to provide mechanical release of various component devices, the most common design configuration consists of a housing containing a segmented thread interface which is compatible with the threads on the mating stud.

Most separation nuts are externally actuated using an impulse or pressure type cartridge. When the release nut is a pyrotechnical actuated the threaded segments will be allowed to move away and expand, resulting in the release of the mating device.

Related Products

You may also be interested in:

FUNCTIONS & APPLICATIONS

Functions

The separation nut provides a pyrotechnic solution for critical release events. Some of the most common uses include satellite deployment along with clamp release applications for weapons launch systems.

Applications

Our separation nut designs are qualified and used on

  • vertical rocket launches
  • anti-submarine rocket deployment systems
  • CubeSat deployment systems.
  • SmallSat deployment systems
  • Antennas
  • Scientific instruments
  • Solar arrays
  • Reflectors
  • Satellite, spacecraft and payloads
  • Booms and masts
  • Launch locks for gimbles, nozzles and thrusters

PERFORMANCE CHARACTERISTICS

  • All-Fire
    5.0/20 millisecond pulse
  • No-Fire
    1 amp/1 watt for 5 minutes
  • Operating Temperature
    -65 °F to +225 °F
  • Axial Load Retention
    Tested with an axial load of 29,500 ± 500 pounds
  • Hermesticity (pre-function)
    Leak rate shall not exceed 2.7 x 10-5 cc/sec of Helium at 1 atmosphere differential.
  • Applicable Specifications
    Qualified to:

    • MIL-N-82943A
    • MIL-I-23659

ENVELOPE/INTERFACE DESIGN

Separation nuts can be customized to fit many customer envelopes.
Separation Nut Technical