VCN151-8 Vandlgard Nut 1/2-13 Zinc

A general purpose frangible (break-a-way) nut, with reduced wrenching. The distance across the points of the hex is less than the diameter of the base of the cone. The nut is installed with a standard wrench and removed by authorized persons by a special procedure.


  • Wrenching Element Breaks Off At Predetermined Torque
  • Can't be removed with standard hand tools. Tightness is not determined by judgment of installer.
  • Threaded Portion Is Tapered
  • Can't be gripped with pliers and has attractive finish.
  • Die Cast From Zinc Alloy
  • No corrosion at break-groove.
  • Reduced Break-Off Torque
  • Lowers clamp load to avoid damage to parts being assembled.
  • Nuts Are Packed In Bags Of 100
  • Better inventory control.
  • Lot Number On Each Bag Of Nuts
  • Traceable to raw material.

Tech Specs

  • Material: Zinc die cast
  • Finish: Natural
  • Diameter: 3/8-16
  • Torque (Breakoff)
  • Suitable for use with GR2 or GR5 bolts
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