ARP APW950N-CP-20 7/16 in. ID Flat Washer 0.950 in. OD Non-Chamfered Black Oxide Steel 20-Pack

The ARP APW950N-CP-20 is a premium performance flat washer designed to complement ARP's renowned line of high-strength fasteners. Featuring a 7/16 in. (0.438 in.) inside diameter and 0.950 in. outside diameter, this non-chamfered washer is precision-manufactured from hardened steel with a black oxide finish for a clean, professional appearance and short-term corrosion protection.

ARP flat washers are parallel-ground for consistent seating and uniform clamp load distribution — critical in high-performance engine, driveline, and motorsports applications where fastener integrity is everything. The non-chamfered ID design is ideal for use where a flat bearing surface on both sides is required.

Key Features:

• Inside Diameter: 7/16 in. (0.4375 in.)
• Outside Diameter: 0.950 in.
• Style: Non-Chamfered flat washer
• Material: Steel
• Finish: Black oxide
• Quantity: 20-pack

Automotive Racing Products (ARP) has been manufacturing high-performance fasteners since 1968. ARP washers are constructed from premium chrome moly steel, parallel-ground, hardened, and finished in black oxide — engineered to the same exacting standards as the rest of the ARP fastener lineup. Whether you're building a race engine, custom fabrication project, or performance street build, ARP washers deliver the precision and reliability demanded by professional engine builders worldwide.