ABB - Installation Products FPW516 - Insulation Piercing Washer, Outer Diameter 25.4mm (1.0 Inch), Inner Diameter 8.6mm (0.34 Inch), Stud Size 5/16 Inch, Copper Alloy, Tin Plated
ABB - Installation Products

FPW516

UPC: 786210709956


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Multiplier: 250

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Overview

The ABB FPW516 is a copper alloy, tin-plated insulation piercing washer designed for secure electrical connections in industrial and commercial applications. With an outer diameter of 25.4mm (1.0 inch) and an inner diameter of 8.6mm (0.34 inch), it accommodates a 5/16-inch stud size, ensuring compatibility with standard fasteners. The tin plating provides corrosion resistance and enhances electrical conductivity, making it suitable for use in harsh environments where moisture or chemical exposure is a concern. This washer is engineered to pierce through insulation, creating a direct metal-to-metal contact for reliable electrical continuity. It is commonly used in power distribution systems, control panels, and junction boxes where secure, maintenance-free connections are required. The copper alloy base material ensures long-term durability and resistance to mechanical stress, while the tin plating extends service life in corrosive conditions. The FPW516 is manufactured by ABB—Installation Products, a trusted name in electrical and industrial solutions. Its precise dimensions and material composition make it ideal for applications requiring consistent performance and compliance with industry standards. Whether used in new installations or retrofits, this washer delivers a dependable solution for maintaining electrical integrity in critical systems.
  • Outer diameter: 25.4mm (1.0 inch)
  • Inner diameter: 8.6mm (0.34 inch)
  • Stud size: 5/16 inch
  • Material: Copper alloy with tin plating
  • Corrosion-resistant tin plating for harsh environments

Specifications

Application
Enables copper to aluminum connections to be made in a bolted joint without the use of inhibiting compounds
Finish
Tin Plated
Fits Bolt Sizes
5/16 IN
Inside Diameter
0.34 in
Inside Diameter
8.6 mm
Material
Copper
Outside Diameter
1 in
Outside Diameter
25.4 mm
Special Features
Accommodates the difference in thermal expansion between copper and aluminum and enhances the efficiency of bolted grounding connections
Standard
UL E9809
Thickness
0.035 in
Thickness
0.89 mm
Type
Transition Washer
Package Dimensions (L x W x H)
3.5 IN x 3 IN x 3 IN
Package Dimensions (L x W x H)
8.89 cm x 7.62 cm x 7.62 cm
Package Weight (Imperial)
0.0100 L
Package Weight (Metric)
0.0050 kg
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