Muncy Machine and Upson-Walton

Muncy™ Twist-On Buttons

Muncy Twist-On Buttons are made of special carbon steel with properties conducive for swaging. The wire rope imprint in the inside diameter of the button enhances the assembly efficiency. When putting the button onto the cable, the ferrule may twist onto the cable with the lays of the wire rope, almost like you are screwing it onto the rope.

Muncy Twist-On™ Buttons are specifically designed for applications that require a smaller than standard swaged button, while maintaining a rating for direct loads. Highly efficient "rifling" on the inside of the rope hole of the precision casting, along with specific metallurgy and heat treatment, yields a product that can achieve both.

Twist-On Button Diagram for Chart
  • High Quality Casting
  • Wire Rope Imprint to Enhance Assembly Efficiency
  • Short Button, Higher Strength
  • Designed to Break most 6 Strand Wire Ropes
  • Made from Domestic Steel

Twist-On Button sized images.
Stock No. Rope Dia. After Swage Dimensions Weight Lbs. Each
Nominal Max
TB-24 3/4" 2.000 2.050 2-21/32 2.10
TB-28 7/8" 2.000 2.050 3-7/64 2.40
TB-32 1" 2.000 2.050 3-39/64 2.50


TB Buttons are recommended for use on 6x19 or 6x37 IPS or XIP, EIP, XXIP, EEIP, RRL IWRC wire rope. TB Buttons are designed for use with 6 strand right lay wire ropes ONLY. Before using TB Buttons with any other type lay, construction, or grade of wire rope, it is recommended that the termination be tested to prove the adequacy of the assembly in the intended application. Proper swaging practices are the assembly manufacturer’s responsibility.