ARP M10 x 1.25 X M18 O.D. 12-Point Nut — High-Strength Engine Hardware

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Durable 12-Point Engine Fasteners

The ARP M10 x 1.25 X M18 O.D. 12-Point Nut is a high-performance fastener designed for demanding engine applications. With an M18 outside diameter, this nut provides an increased bearing surface, which helps distribute clamping load more effectively across the cylinder head or component being secured. This is critical for preventing stress concentrations that can lead to fastener failure or gasket leaks in high-performance engines.

Technical Specifications

• Thread Size: M10 x 1.25
• Outside Diameter (O.D.): 18mm
• Drive Style: 12-Point
• Material: High-strength alloy steel
• Application: Universal high-performance engine assembly

The 12-point design is a hallmark of professional racing hardware, offering superior wrench engagement and clearance compared to traditional hex nuts. These nuts are heat-treated and finished to meet the exacting standards of the ARP brand, ensuring they provide consistent torque-to-yield characteristics. Whether you are performing a full engine build or replacing a single nut, using genuine ARP hardware is the best way to ensure your engine remains reliable under stress. The increased O.D. of this specific nut makes it a versatile choice for various custom engine configurations where a standard M16 nut might not provide sufficient surface area. Trust your engine's integrity to the industry leader in fastener technology. For all your performance engine hardware and specialized components, rely on the expert inventory at GGCRACING.