Triangle Machine Products manufactures precision threaded pins for industrial assemblies that demand both structural integrity and exact fit. Our pins are custom machined to meet tight tolerances and application-specific requirements, whether for load-bearing, alignment, fastening, or motion control.
With decades of experience in producing turned components, we serve OEMs, Tier 1 suppliers, and industrial manufacturers across automotive, aerospace, fluid power, automation, and more. From prototypes to high-volume production, Triangle delivers custom threaded pins that meet the highest standards for performance and reliability.
Threaded pins combine the secure engagement of a fastener with the precise tolerances of a machined shaft. Triangle produces both externally and internally threaded pins with highly controlled thread geometry and concentricity. Whether used to join components, position assemblies, or serve as load-bearing pivots, our threaded pins are designed to ensure dependable mechanical performance.
We machine features such as rolled or cut threads, undercuts, chamfers, shoulders, or blended transitions—all critical to ensuring smooth installation, proper fit, and long service life. Our inspection process includes visual thread verification, gauge checks, and full dimensional measurement to ensure consistency across every batch.
Triangle’s threaded pins are used in assemblies where failure is not an option—such as suspension systems, valve actuators, structural couplings, and guided linear assemblies—so we prioritize precision at every step.
Every threaded pin we manufacture is made to order based on your exact drawing or model. We don’t offer stock sizes or catalog parts—each component is custom-engineered to fit the mechanical and dimensional needs of your assembly. Triangle supports a wide range of thread types (UNC, UNF, metric), sizes, and fit classes, along with fine surface finishes and tight diameter tolerances.
We can produce threaded pins with partial or full threading, undercuts for clearance, drive features, knurled sections, and transition diameters for press-fit or slip-fit applications. Our engineers will work with your team to identify design features that improve manufacturability, assembly efficiency, and long-term durability.
In-house secondary operations such as centerless grinding, polishing, threading, and heat treatment are available to support functional and cosmetic requirements. Whether your design calls for a low-profile alignment pin with thread engagement or a high-strength fastener shaft with precision sealing surfaces, Triangle has the tools and experience to get it done right.
Triangle Machine Products is a trusted threaded pins manufacturer with advanced CNC machining capabilities and a commitment to quality. Our team brings decades of turning experience and precision inspection to every part we produce, whether it’s a one-off prototype or a multi-thousand piece production run.
We use high-speed lathes, multi-spindle machines, and vision inspection systems to ensure repeatability and dimensional accuracy. Every pin undergoes in-process and final quality checks, and we provide inspection documentation, certifications, and traceability as required.
With responsive engineering support, competitive lead times, and a strong focus on customer satisfaction, Triangle is a dependable manufacturing partner for high-performance threaded pins across a wide range of industries.
Threaded pins are machined components that feature external or internal threads, allowing them to engage with mating parts while serving as locating, fastening, or load-bearing elements. They are commonly used in mechanical assemblies such as actuators, brackets, couplings, suspension systems, housings, and fluid control components. These pins require tight dimensional control to ensure alignment, secure engagement, and resistance to loosening or wear during use.
Yes. Triangle Machine Products specializes in custom machined threaded pins built to your drawing or CAD model. We support a variety of thread types and lengths, custom geometries, and secondary operations to ensure the pin performs exactly as required in your assembly.
We machine threaded pins from carbon steel, alloy steel, stainless steel, aluminum, brass, and other engineering metals depending on strength, wear, and corrosion resistance needs. Popular options include 1045, 4140, 12L14, 303, 316, and 17-4PH. We also offer black oxide, zinc plating, passivation, and other coatings to improve durability and environmental resistance.
If you have any questions about our machined threaded pins, our machined threaded pin turnings machines, our custom machined threaded pins creation process or anything else, including a quote, 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.
