Free Running Inserts

Helio-coil standard range is available in stainless steel AISI-304/ 
DTD734, metric series ranges from M1. 6, M2 to M56 & in unified 
series from UNC / UNF 1-64 to 1-1/2 inch. Helicoil is also available in 
strip feed or reel mounted form, helicoil in strip feed form are best 
suited for significantly reducing the installation time using power tool
for installation of inserts. 
Helicoil inserts or wire thread 
inserts are made of cold rolled 18-8 grade stainless steel to as7245 , 
mil-i-8846 & DTD734 specifications. This wire is cold rolled to a 
diamond cross section producing an ultimate tensile strength of 
approximately 1375-1725 mpa, mirror like surface finish of 2-4 microns 
and flank hardness of RC 43-50 which is far in excess of the usual 
tapped materials and best suited for most of the industrial needs. 
Helicoil inserts can also be supplied in other materials such as SS-316,
inconel x-750, titanium alloys, nimonic 90, nitronic 60, phosphorus 
bronze, beryllium copper and with special coating and plating 
requirements such as cadmium plating, silver plating, zinc plating, 
nickel plating and dry film lubricants, anti- corrosion/ salt spray 
resistant coatings.