Item #: Dual-Lok

Dual Locking Surface Self-Locking Fasteners

Temperature Range: -450°F to +500°F; -268°C to + 260°C

Reusability: Complies with IFI 124 and MIL-DTL-18240

The patented Dual-Lok process is designed specifically for use in higher temperature applications. Using Vespel™ inserts as its locking element, Dual-Lok fasteners have the capability to withstand high to low temperature cycling (-450°F to +500°F; -268°C to + 260°C) throughout at least 15 removals. Dual-Lok fasteners meet all of the requirements of IFI 124 and MIL-DTL-18240.

The Dual-Lok design incorporates a specially formed locking element pressed into an off-center through-hole prepared in the threaded section of an externally threaded fastener. This unique design provides these features:

Positive insert retention and no glue required. Advantage over pellets due to smaller drill hole and element diameter required to develop torque due to havin two locking surfaces exposed. Prevailing torque performance meeting the requirements of MIL-DTL-18240 Withstands high temperature requirements for non-metallic self-locking elements. Withstands high vibratory and stress conditions placed on external threaded parts.