www.locknstitch.com www.fulltorque.com LOCK-N-STITCH Inc. specializes in all aspects of the repair of cracked and damaged cast iron and other cast metals. LNS manufactures crack and thread repair products, provides training in crack repair techniques and maintains a full-service repair department that performs repairs all over the world and has the benefit of over thirty years of experience.
Whether you want to metal stitch a damaged casting yourself, want our professionals to do the job, or need an on-site consultant to advise and train your personnel during the repair, we have the supplies, the skills, and the people to assist you. Quite simply: we can fix it or you can fix it.
Please review our web site and see what we have to offer to you and your company.
How is Full-Torque so different from all other thread repair products? Full-Torque thread repair inserts provide a completely new solution to stripped and cracked bolt holes. No other thread repair method even comes close to the strength and durability you will realize when you install our inserts. Full-Torque thread inserts have a patented external thread style called Spiralhook TM. This is a revolutionary new concept that makes our thread repair inserts the very best in the world.
Cracked bolt holes are now easily repaired and strengthened. Head bolt holes, main bearing bolt holes, starter motor bolt holes, the uses are endless. All bolts and other thread designs create radial spreading force when tightened. This frequently leads to cracked and stripped bolt holes in machinery parts.
When a Full-Torque thread insert is installed into a cracked bolt hole in cast iron, the crack is automatically drawn together and reinforced by the radial drawing ability of the Spiralhook threads on the outside of the insert. As the insert is tightened into the hole that is threaded with a special tap, the insert is pulled upward and engages the upper side of the threads with the negative hook angle on the insert with the matching bottom side of the threads in the threaded hole. As it is tightened the surrounding metal is drawn inward and deeper into to the Spiralhook threads.