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Blue Dot Technology

Conductive vs. Hi-Strength Retaining Nuts

VTE Inc. uses two type of retaining fasteners:

  • Conductive Fasteners
  • Mechanical Fasteners

Conductive Fasteners
Our conductive fasteners are used where current will pass through the fastener. The electrical properties are such that conductivity is superior to mechanical fasteners.
Using copper as a standard: 100%
- Brass conductivity: 37%
- Stainless steel conductivity: 2.4%

Mechanical Fasteners
Our retaining fasteners are used where current does not need to pass through the fastener. An example of this would be at the end of a connection post, to tighten an assembly.

Some key points:
  • Conductive nuts include: brass, tin-plated brass. On some bus material: nickel-plated brass. Brass is used for its superior conductivity to stainless steel.
  • Mechanical nuts: stainless steel, steel. Steel is used to tighten, or torque an assembly. Steel is much harder, and can handle higher torque before distortion.
  • Brass and copper are more expensive than steel, and are only used where conductivity is required.
  • Brass (or plated) nuts are marked by VTE with a Blue Mark. This is to notify the installer that the fastener is for conductivity positions only.
  • Conductivity nuts are installed by the factory, and must be left in their original position.
  • When installing multiple lug or ring terminals, washers are not recommended between terminals.





 
USA Factory / Headquarters European Headquarters Other Regions
VTE Inc.
5437 Robinson Rd
Pellston Mi 49769
United States
PH: 1.231.539.8000
FX: 1.231.344.5914
Email: info@vteworld.com
www.vteworld.com
VTE Europe BV
Trapgans 8 J
Ankeveen 1244RL
Netherlands
PH: 035-6565560
FX:
Email: info@vte.nl
www.vte.nl

Please contact VTE USA or
VTE Europe for ordering information.

VTE is looking for dealers
and distributors in new
areas. Please contact us
for information.

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