Marine Protection Systems Stainless Steel Shaft Grounding Strap

The MPS Stainless Steel Shaft Grounding Strap is a robust device designed to electrically bond your vessel’s driveshaft(s) to its bonding system, significantly reducing shaft, propeller, and stern tube corrosion. Unlike carbon brushes, it maintains a wide and consistent contact with over half the shaft's circumference at all times, preventing glazing or loss of contact. Built with tinned copper braid, a 316‐marine-grade stainless steel pivot arm & mount, and a flexible mounting system, it works well on shafts between 1-4 inches (for the recreational model, SS07). Barton Marine NZ stocks this premium electrolysis protection gear and provides expertise and NZ-wide shipping. 

Features & Benefits 

• Spring-tensioned strap for straightforward installation and correct fit without binding. 

• Unmatched surface area connection to shaft: over 50 % of shaft circumference in contact, better protection than small contact brushes.  

• Tinned copper braid strap plus backup bonding connection to strengthen electrical continuity. 

• 316 marine grade stainless pivot arm and mount bracket: robust against corrosion, durable in salt water. 

• Adjustable design: 11 positioning holes to suit many shaft diameters; slack tension provided by springs to maintain contact without strain. 

• Includes non-cutting lubricant (conductive grease) to reduce shaft scoring; regular maintenance helps. 

• Can be retrofitted easily, works on both in-water and out-of-water installations.

• Recreational: Fits 1, 2, 3 or 4" Shafts, Braid Strap Length 330mm