ARP 400-8782 Stainless Steel Flat Washer 7/16" ID

The ARP 400-8782 is a precision-engineered stainless steel flat washer designed for high-performance automotive, marine, and powersports applications. Manufactured from corrosion-resistant stainless steel, this washer provides reliable fastening performance in demanding environments where rust and corrosion are concerns.

Specifications:

• Inside Diameter (ID): 7/16 inch
• Outside Diameter (OD): 0.705 inch
• Thickness: 0.090 inch
• Material: Stainless steel
• Finish: Polished stainless

ARP washers are parallel-ground for consistent clamping force and precise load distribution. The stainless steel construction makes this washer ideal for applications exposed to moisture, heat, and corrosive elements such as exhaust systems, intake manifolds, suspension components, and marine installations. This washer is commonly used with 7/16-inch bolts and studs throughout engine assemblies, drivetrain components, and chassis hardware.

As part of ARP's extensive line of premium fastener components, the 400-8782 meets the exacting standards that have made ARP the trusted choice of professional engine builders and racing teams worldwide since 1968.