shackle bolt

He had succeeded only in blackening the steel and putting a big water blister on one of his wrists right where the shackle bolt would press upon it.

On this occasion, uniquely and in the entire history of Martin Baker ejection seats using this particular feature, it failed due to a shackle bolt being too tight.

He bounced once and felt his legs come free as the shackle bolt holding his feet came out, then he felt bones snapping in one hand as it was pulled through the closed manacles.

Furthermore our designers, working closely with military experts, have developed a new type of shackle bolt and firing handle housing, which both Martin Baker and the military authorities consider will prevent the reoccurrence of the circumstances that led to this tragic accident.