KATO Fastening Systems Threaded Inserts

KATO Fastening Systems has been manufacturing Tangless CoilThread inserts for over 15 years.
KATO Tangless inserts give you all the benefits, features and performance of conventional tanged inserts.  In fact, KATO Tangless inserts are identical in form fit and function to conventional tanged inserts.  The only thing missing from KATO Tangless inserts are the tangs!
Tangless CoilThread inserts are made of cold-rolled 304 stainless steel wire, work-hardened to a tensile strength above 200,000 psi, and a hardness of Rc 43-50.  The finished surface of the tangless insert (8-16 micro-inches) is exceedingly smooth, virtually eliminating friction-induced thread erosion.

• Assembled Tangless CoilThread inserts will accommodate UNJ, MIL-S-8879, male threaded fasteners. 
• Metric Tangless CoilThread inserts conform to National Bureau of Standards Handbook H-28/21, M Profile, Tolerance Classes 4H5H or 5H, as well as ISO standards 68, 261, R724 and 965/I. 
• Assembled Metric Tangless CoilThread inserts will also accommodate MJ, AS1370, male threaded fasteners.