Lang Tools 2584 15-Piece Metric Thread Restorer Set, Black, Gray

Product Information

The Nes Internal Thread Chasing Repair Kit is available in 3 different models that accommodate 3 different thread diameter ranges. Unlike threading taps and dies that are designed to cut and remove metal, swaging thread repair tools reshape threads that have already been cut. The simplest of these and maybe most well known, is the HeliCoil insert which looks like a spring but once installed creates a new thread within a thread. The concept is simple enough. Imagine a male thread on a screw or bolt is like a spring wrapped around a smooth bar and a female thread, a spring inserted into a smooth bore. When a thread gets stripped, it’s as if that spring is being removed and in some cases, that’s exactly what it looks like. It’s not uncommon for a stud to pull out of an alloy casting with the aluminium thread still fitting neatly and yes, a little annoyingly, into its spiral grooves, just like a spring.

These Standard Metric Kits are ideal for repairing threads of existing fasteners. All kit sizes up to 5/8in./M16 come with 30 inserts (10-1D, 10-1.5D, 10-2D). M10 x 1.5 to M24 x 3.0 no drill bits supplied. Equipped with an inserting tool, tang remover and tap, these kits are an ideal way of ensuring you have the correct tools to hand to repair fastener threads when necessary. Supplied in a plastic carry case. The file faces are crosscut to full depth to prevent skipping when filing fine pitch threads. Each file in this set is 7/16” square and 8-3/8” long with cutting teeth on both ends and 8 different thread pitches per file. When correctly installed the provide an new threaded hole that is as strong or stronger than the original tapped hole Cons Helicoil-type inserts are commonly used in the auto repair industry to perform highly effective as-new repairs.Although thread restoring files are an excellent way to repair damaged external threads there are some pros and cons you should be aware of. Pros Rethreading screwdrivers are a handy solution for use on switch boxes, conduit boxes, fittings and faceplates. Their convenient, ergonomic design usually combines a precision steel tap with a comfortable soft-grip handle, making them easy to use for cleaning and rescuing stripped threads on all manner of electrical boxes.

A feature you will appreciate about this Thread Restoring File Set is it includes (3) Poly handles that will protect your hand while using the files. A 60 degree Universal Thread Restoring File is also included for those minor thread repair jobs. Heli-Coil ® inserts are available in thread repair kits and sets for permanently repairing tapped holes which have been stripped or damaged due to wear, corrosion, and overtorque. Kits are available in inch, metric, spark plug, and pipe thread series. All kits have a quantity of inserts, the proper size drill, high-speed steel Heli-Coil ® tap, and installation tool.

Rethreading files can be used to clean up lightly damaged male threads where minimal material removal is necessary.

HELICOIL® thread inserts are designed to evenly distribute loads across the screw for even distribution of stress A total of 23 Taps and 28 Dies are machined from high grade tool steel and heat treated to reform damaged threads. These tools are Color-Coded for easy identification. Each tap and die is HEX shaped so they can be turned with an appropriate box or open-ended wrench or an adjustable wrench. Thread Pitch Sizes: (177-2) SAE Thread Pitches 9, 10, 12, 16, 20, 27, 28 and 32 T.P.I.; (177-1) SAE Thread Pitches 11,12,13,14,16,18,20,24, TPI; (177-8) METRIC Thread Pitches 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0mmApplication :General purpose repair of FEMALE threads in machined parts, dies, fixtures, farm equipment, home equipment, etc.