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A thread restoring file, one type of thread restorer. A thread restorer is a tool used to fix threads on nuts or bolts that have become damaged. One type of thread restorer is a thread restoring file or thread file. [1] There are other types of thread restoring tools as well, for example a chaser tap or chaser die. [2] Normal taps and dies can ...
Both tools can be used to clean up a thread, which is called chasing. However, using an ordinary tap or die to clean threads generally removes some material, which results in looser, weaker threads. Because of this, machinists generally clean threads with special taps and dies—called chasers—made for that purpose. Chasers are made of softer ...
One set of chasers would be used at a time, each chaser is inserted into the die head (in the correct order) and the die head is closed bringing the chasers down to their cutting position. When sufficient length of thread has been cut the die head will open allowing for rapid retraction of the head without interference with the newly formed thread.
H. Gerstner & Sons, Inc. is a manufacturer of wooden tool chests based in Dayton, Ohio.Started in 1906, it has remained family-owned. [1] Of more than twenty manufacturers building wooden tool chests for journeymen in the early 20th century, H. Gerstner & Sons is the only one to still exist.
Crescent is a brand of hand tools. It originated with the Crescent Tool Company, founded in 1907. The Crescent brand has changed ownership multiple times. It is currently owned by Apex Tool Group, LLC of Sparks, Maryland as part of its Hand Tools division. It is best known for its style of adjustable wrench. [1] [2]
In manufacturing, threading is the process of creating a screw thread.More screw threads are produced each year than any other machine element. [1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and grinding, as detailed below); deformative or transformative methods (rolling and forming; molding and casting); additive methods (such as ...