The scope of this SAE Aerospace Information Report (AIR) is to define recommended methods of determining the optimal dimensional relationship of components coupled together using thrust wires for applications such as coupling nuts and fittings.

These design parameters are intended to optimize component loading characteristics and maximize wire shear capabilities for both high and low pressure applications.

Application

The equations presented herein were developed for use with parts requiring a swiveling action in relation to each other and still retain an axial load capability. The most prevalent application would be the attachment of coupling nuts on hydraulic tube fittings and hose assemblies.

Thrust wire lengths and insertion depths used with the designs herein should be determined using ARP4988.