ARP 200-8433 Black Oxide Washers OD - M7 540

ARP 200-8433 are precision-engineered black oxide coated washers designed for high-performance automotive and racing applications. These washers feature an M7 (7mm) inner diameter and .540-inch outer diameter, providing optimal load distribution for metric fastener assemblies.

Key Specifications:

• Inner Diameter: M7 (7mm / .276 inches)
• Outer Diameter: .540 inches (13.7mm)
• Black oxide finish for corrosion resistance
• Precision machined for consistent thickness and flatness
• Heat-treated for superior strength and durability

ARP washers are manufactured to exacting tolerances to ensure proper clamping load and prevent fastener loosening under extreme conditions. The black oxide coating provides moderate corrosion protection while maintaining a professional appearance. Ideal for engine building, cylinder head assemblies, and other critical fastening applications where precision and reliability are essential.