These coupler nuts are hand made specifically for bolt replacement, and are less prone to galling or jamming than most other commercially available adapting couplers. They are machined as a single piece from 4140 hexbar, and do not contain threaded inserts. Their shorter overall length, and fully threaded internal diameter lessens the likelihood of bolts jamming. Couplers are available in most common bolt sizes. Additional sizes may be available by request. Sizing references the bolt side of the coupler. The other side is threaded 1/2”x20 to match threads on spinner adapters and the YABR.

Couplers are used in combination with a spinner adapter to spin wedge-bolts before transferring to the YABR to pull the bolt. The most common wedge bolt sizes are 3/8”, 10mm, 1/2” and 12mm.