Breakaway Tamper Proof Security Nuts
Zamak 5 Zinc Alloy Shear Nuts
- Also referred to as a Break Away Nut or Shear Nut
- Tapered outer diameter
- Makes gripping the nut very difficult after installed
- Installed using a standard wrench or socket
- Once maximum torque is reached, the hex portion snaps off the installed portion
- Leaves only a coned nut behind
Zamak 5 Break-Away Nut Specifications
| Nut Sizes | Hex Drive | Torque Guide | Bottom Diameter (Max) | Pre-Installed Height | Nut Height |
| #10-24 | 7/16" | 30-40 inch/lbs | 0.4375" | 0.390" | 0.18" |
| 1/4"-20 | 9/16" | 50-60 inch/lbs | 0.5625" | 0.470" | 0.22" |
| 5/16"-18 | 5/8" | 90-110 inch/lbs | 0.6250" | 0.500" | 0.22" |
| 3/8"-16 | 3/4" | 140-150 inch/lbs | 0.7500" | 0.580" | 0.25" |
| 1/2"-13 | 1" | 330-360 inch/lbs | 1.0000" | 0.750" | 0.35" |
| 5/8"-11 | 1-1/8" | 330-360 inch/lbs | 1.1250" | 0.800" | 0.37" |
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Product Specifications
Color
Silver
Corrosion Resistant
Yes
Drive Style
External Hex
Elongation
% in 1in - 7.0
Grade
Zamak 5
Hardness
BHN - 91
Material
Zinc
Product Type
Breakaway Nut
Shear (lbs)
38,000 PSI
System of Measurement (Unit)
Inch
Tensile PSI
47,600
Thread Direction
Right Hand
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Yield PSI
33,000
