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Inch Master Kit: 20 Dies (see Size Chart below)
Inch Master Kit: 20 Dies (see Size Chart below)

Split Die Thread Repair Kit: Inch - Master

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On sale $599.99 $549.99
Repair damaged or stripped fasteners, bolts & studs faster than conventional thread repair tools with the Murray Tools Split Die Thread Repair System!
Part Number: S2089
Availability: ****CALL****
Split Die Thread Repair Kit: Inch - Master

Repair Damaged Bolt, Fastener & Stud Threads Fast and Easy!


The Split Die Thread Repair System is designed to save you time and money. Because the hex dies are split and utilize a special spring design, you can place the metric and standard thread dies below the damages on your bolt or stud, then using a six point deep well socket, chase the threads clean. This patented system is fast and easy to use, and because you start on clean, undamaged threads, you eliminate the possibility of cross threading.


This tool reduces the need to find or buy replacement fasteners or threaded components and provides the peace of mind knowing the repaired fastener is the original. 


The unique patented design saves you time by avoiding the need for major disassembly or tear-down of equipment to remove a damaged stud or hard to reach damaged bolt.

  • Repairs damaged fasteners faster than conventional thread repair tools.
  • Eliminates the need for aftermarket replacement parts that are often too long, too short, or the wrong hardness.
  • Built for industrial use and made to withstand conditions faced by the U.S. Military.
  • Heat-treated, hardened, high-grade carbon steel meets the highest quality standards.
  • By using a deep well six-point socket wrench, you can use our repair tool in tight quarters.
  • Proudly made in the USA!


  • Common applications include Automotive, Marine, Industrial, Mining, Agricultural and Manufacturing.
  • Check out the Split Die's ever-expanding list of Uses & Applications!

Size Chart:

Split Die Thread Repair Kit: Inch - Master
P/N: S2089
Die P/N

Thread Size
Outer Diameter
(Socket Size)
of Holes
ENC141/4-20 NC
1/4-28 NF
5/16-18 NC
5/16-24 NF
3/8-16 NC
3/8-24 NF
ENC717/16-14 NC1"4
ENF717/16-20 NF1"4
ENC121/2-13 NC1"5
ENF121/2-20 NF1"5
ENC919/16-12 NC1 7/16"4
ENF919/16-18 NF1 7/16"4
ENC585/8-11 NC1 7/16"4
ENF585/8-18 NF1 7/16"4
ENC343/4-10 NC1 7/16"6
ENF343/4-16 NF1 7/16"6
ENC787/8-9 NC1 7/8"6
ENF787/8-14 NF1 7/8"6
ENC101-8 NC1 7/8"6
ENN141-14 NF1 7/8"6

*Kit includes the above 20 Dies and Replacement Springs in a Hard Plastic Case.
*The Dies are also available individually and in smaller "mini" kits.

Video Demonstration:

Simply put, these dies will turn an "oh no" into a "no problem".  Don't just take our word for it, check out our Customer Testimonials!

Cross Reference:

Split Die Thread Repair Kit: Inch - Master
  • National Stock Number (NSN): 5136-01-321-6790
  • f/k/a Murray Tools Part Number: F-CKA20-1421
  • f/k/a Four Star Part Number: S2089

Made in USA Logo
Looking for Metric Sizes?  Individual Dies or Mini Thread Repair Kits?
View our Split Die
Summary Page for a comprehensive list of our offering.

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