“Hard-Stop” Fasteners for Automation

Centrix Hard Stop single sided temporary fastener for automation

1) Enhanced clamping area. Qualified for use in composite stacks at major OEMs

2) Precision diameters up to .001 total tolerance for precise alignment across the entire grip.

3) Low profile body. Robot compatible.


The Hard-Stop fastener maximizes the stroke of the low profile body.When the fastener is driven in the counter clockwise direction, it reaches its “hard stop” in which the bushing of the fastener seats against a ledge inside the collet. Toque control is required during removal to avoid damage to the fastener.

The hard stop design is ideal for robotic applications. Manual application is supported by our exclusive line of adapters

The body of the fastener is designed for either counter sunk holes or flat openings. The body is part marked and can be plated to aid in identification for usage. Maximum and minimum grip ranges (material stack min. and max.) are clearly marked on each fastener.

The collet of the hard stop fastener forms a concentric fit in the drill hole, with tolerances held up to .001. Allowing both precise alignment and sufficient clamping in the build process. A 3 finger spline design is offered with a hard stop, enhancing the grip range of the fastener.