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The Development of the Original Wire Thread Insert

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 September 1985



A Heli‐Coil insert is defined quite simply; it is diamond section wire formed into a helical coil and wound, by means of appropriate tooling, into a pre‐tapped hole. Made mainly from austenitic nickel chrome stainless steel — it is also available in phosphor bronze, Nimonic 90 and Inconel X‐750 it provides a permanent thread, wholly resistant to wear and the effects of corrosion. High temperatures are taken care of by the use of heat resistant nickel alloy and Inconel wire.


(1985), "The Development of the Original Wire Thread Insert", Aircraft Engineering and Aerospace Technology, Vol. 57 No. 9, pp. 21-22.




Copyright © 1985, MCB UP Limited

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