How a Recoil Wire Thread Insert Works: Recoil wire thread inserts are rolled from high quality stainless steel wire with a diamond shaped cross section, wound to the shape of a spring thread. Once the insert is installed into a tapped hole, it provides a permanent and wear resistant thread in the parent material that is stronger than the original thread.

Recoil inserts are greater in diameter than the corresponding tapped hole and compress as they are installed. This allows maximum surface contact area with the tapped thread, safely and permanently anchoring the inserts into place.

The kind of hole to be tapped has much to do with the style of tap that’s best suited. Some holes go all the way through. Others, while not through holes, still are relatively deep. Some are quite shallow, little deeper than diameter. Each of these three kinds of holes through, deep-bottoming blind, and shallow bottoming, has a tap or group of taps best suited to requirements.

Pferd’s new DUODISC® combination abrasive wheel is a cost-efficient and technically advanced solution for users needing a fast, time-saving cutting action and reliable deburring performance – now delivered by a single wheel!

DUODISC® combination cutting, light deburring and surface grinding wheels conform to U.S. and international safety standards. Suitable for both cutting and grinding of Steel and Stainless Steel. DUODISC® is manufactured without addition of ferrous, sulphurous or chlorinated fillers. Enjoy long service life and fact cutting action with angle grinders of all power outputs.