Description
Product Overview
Moroso 7/16 flat washers are engineered for demanding automotive applications. Each washer is forged from 4130 chrome‑moly alloy steel, heat‑treated to achieve optimal hardness, and then machined to a flat, parallel surface. The set includes 34 pieces, each sized to match a 7/16 inch fastener, providing consistent performance across multiple installations.
![[Product front view showing all components]](https://www.holviro.store/wp-content/uploads/2026/06/accd6f1b61114f4681e622e24f8b9e27.jpg)
Usage
These washers are ideal for engine head bolt assemblies, performance upgrades, and race‑car maintenance. They distribute stress evenly across the bolt head, reducing the risk of warping or loosening under high‑load conditions. Suitable for both professional mechanics and dedicated DIY enthusiasts working on high‑performance engines.
Why Choose Us
Moroso combines decades of racing heritage with precision manufacturing. Our washers undergo rigorous quality checks to ensure each piece meets exacting standards for hardness and flatness. Made in the United States, they reflect a commitment to durability and performance that stands up to the toughest track conditions.
Key Features
- Premium 4130 chrome‑moly steel offers superior strength and heat resistance.
- Precision machined flat surface ensures even load distribution for reliable torque.
- Heat‑treated to maintain consistent hardness, reducing deformation under stress.
- Compact 34‑piece kit provides enough washers for multiple engine builds or replacements.
- Backed by Moroso’s customer support and warranty for peace of mind.
FAQ
What size fastener do these washers fit?
They are designed for a 7/16 inch bolt head, matching standard performance engine head bolts.
Are these washers compatible with all engine types?
They are suitable for most high‑performance gasoline and diesel engines that use 7/16 inch head bolts, especially in racing applications.
How are the washers packaged?
The 34 washers are packed in a compact, lightweight box measuring 7.19 x 5.44 x 0.75 inches, making storage and transport easy.
Can I use these washers for street‑car repairs?
Yes, while optimized for racing, the durability and precision make them an excellent choice for any high‑stress engine repair.
What warranty does Moroso provide?
Moroso offers a limited warranty covering material defects, backed by responsive customer service for any issues.





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