At Triangle Machine Products, we manufacture precision shoulder rivets that are purpose-built for structural integrity and repeatable performance. These components are engineered for use in assemblies that require a fixed pivot point, guided movement, or precise spacing under load. Every shoulder rivet we produce is machined to exact specifications—no forming shortcuts, no tolerance drift, just consistent, high-strength results.
Whether you need a custom shoulder rivet with a specific underhead radius or a series of steel shoulder rivets for a high-load application, Triangle provides fully machined solutions tailored to your exact design. Our shoulder rivets are trusted in structural, rotating, and load-bearing applications where failure simply isn’t an option.
Shoulder rivets serve as critical structural components in mechanical assemblies, often used as fixed shafts, hinge pins, or guides within larger systems. Their defining feature—a precision-machined shoulder—acts as both a bearing surface and a mechanical stop, helping to align mating parts and control movement or pressure during assembly and use.
In industrial environments, these rivets must stand up to repeated shear forces, vibration, and axial loading without deforming or backing out. That’s why we machine ours from solid bar stock, allowing for tighter control over concentricity, surface finish, and shoulder-to-shank transitions. Unlike cold-headed rivets, which may show inconsistencies under load, Triangle’s structural shoulder rivets are designed for mechanical reliability, even in high-cycling or load-critical applications.
Every application is different—and that’s why we don’t force fit your needs into a standard part number. Triangle specializes in custom shoulder rivets with shoulder diameters, lengths, and head profiles tailored to your exact print. Whether you require a flush-head design for minimal clearance, a large flange for load distribution, or specific tolerances to fit a precision bushing or rotating component, we machine each part to spec.
We offer a range of materials, including mild steel, stainless steel, and alloy steels, as well as finishing options like black oxide, passivation, or oil coating. For industries with strict quality standards—such as automotive, aerospace, or heavy machinery—we deliver rivets that meet both dimensional and functional requirements, supported by inspection documentation and consistent part quality across every batch.
Steel is often the material of choice for shoulder rivets due to its strength, durability, and resistance to wear. At Triangle Machine Products, we go a step further by machining steel rivets from bar rather than relying on high-speed heading processes. This gives us tighter control over the entire geometry of the part—including the underhead radius, shank-to-shoulder transition, and critical diameters that support your assembly’s performance.
When your application depends on a clean, repeatable fit and a rivet that won’t loosen, gall, or shear under stress, machining makes the difference. Our steel shoulder rivets are built for that level of performance—delivering precision where it matters and reliability over the long term. From single-part prototypes to full production runs, Triangle offers the quality, consistency, and technical support you need.
Shoulder rivets are solid fasteners with a defined shoulder that acts as a mechanical stop, spacer, or load-bearing surface. They’re commonly used in rotating joints, linkages, and structural assemblies to provide alignment, spacing, and movement control.
Yes. We specialize in custom-machined shoulder rivets tailored to your drawing, including specific diameters, lengths, head styles, materials, and finishes. We machine every rivet to meet tight tolerances and performance-critical applications.
Steel shoulder rivets provide high shear strength, excellent durability, and a long service life in demanding applications. Machined from bar stock, Triangle’s steel rivets deliver consistent quality and precise fit for assemblies that demand both structural and dimensional integrity.
If you have any questions about our machined shoulder rivets, or the types of rivets we manufacture, feel free to contact us! You can speak to the sales team at our Cleveland office directly by calling 216-524-5872, or you can fill out an online contact form. You can also check out our FAQ page for more answers to commonly asked questions. We’re excited to hear from you.
