0.5THW - Weld-On Adapter

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The 0.5THW magnetic adapter is meant to be welded permanently in place on any customer fixture.  A substantial chamfer around the bottom edge makes for a nicer weld.  This item is not hardened like most of our other adapters, and is available in a variety of different materials (see table below).  Place it on your fixture in any desired location, add a few weld tacks around the perimeter, and you have a permanent SMR reference. Think of it as a non-drifting drift nest.

The adapter holds the centerpoint of a 0.5" diameter SMR 0.5" above the surface of the part, although this dimension is not critically controlled because this adapter is simply meant to establish a permanent reference point. The SMR locates on a conical land.

The magnets are provided (one per adapter) but not installed. This is so that you can heat treat the entire fixture after all adapters are welded on (if desired) without affecting the magnetism of the magnets. When ready, the magnets may be installed in the magnet well. We recommend securing the magnets using an adhesive for extra security. Of course, this is mandatory for 0.5THW products constructed from non-magnetic materials. (Hint: don't do this until you are finished with your processing - sometimes they're very hard to get back out!)

Construct the desired part number using the table below, indicating desired material. Please note that other materials are available upon request.


Material Value "A"
6061 Aluminum 6061
7075 Aluminum 7075
1144 Steel 1144
17-4 Stainless 174
303 Stainless 303

May Be Used With

Any 0.5" diameter SMR

Diameter in 0.75"
Diameter mm 19.05 mm
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