Triangle Machine Products specializes in the precision machining of custom shaft pins and machined pins for demanding industrial applications. Whether you need locator pins, dowel pins, clevis pins, or specialized shaft pins, our team delivers tight-tolerance parts designed for consistent performance and long service life.
We work directly with OEMs, Tier 1 suppliers, and manufacturers across industries including automotive, hydraulics, aerospace, and heavy equipment. From small prototypes to high-volume production runs, Triangle produces custom precision pins built to your exact specifications.
We engineer our shaft pins for durability, precision, and consistent functional fit. Using advanced CNC lathes and multi-spindle turning centers, we achieve tight tolerances for diameter, concentricity, straightness, and surface finish—critical requirements in high-performance assemblies. Triangle manufactures a wide range of pin types including retaining pins and stop pins used in mechanical assemblies, shear pins designed to break at specific load conditions, alignment and dowel pins for component location, and stepped or grooved pins with complex geometries. Each part is thoroughly inspected using calibrated gauges, CMMs, and optical systems to ensure that every detail, from surface finish to diameter, meets the performance needs of your application.
At Triangle Machine Products, all pins are custom-manufactured to your print—nothing is off-the-shelf. Our experienced team works with your engineers to understand performance goals, offer design-for-manufacturing feedback, and deliver efficient, repeatable solutions. We can accommodate a wide range of custom features such as non-standard lengths and diameters, precision undercuts and grooves, external or internal threads, chamfers, radii, and flats. We routinely machine parts with tight surface finish requirements and can apply various secondary processes such as centerless grinding, drilling, and knurling. We also support heat treating and plating processes including zinc, phosphate, black oxide, and more. Whether you require a hardened steel shear pin or a non-magnetic stainless dowel, we are fully equipped to deliver high-precision results.
Triangle Machine Products is a trusted manufacturer of custom shaft pins and precision machined pins. We bring decades of experience in high-precision turning and understand the importance of maintaining tight tolerances, especially in applications where alignment, fit, or load-bearing function is critical. Our modern CNC equipment enables repeatable, high-accuracy machining across a range of batch sizes, from low-volume prototypes to full production runs. We offer exceptional versatility in materials and part complexity and maintain a strong reputation for consistent quality and fast turnaround. Each part is subjected to rigorous in-process and final inspection, and we provide full traceability and documentation when needed. Whether you’re launching a new design or optimizing a legacy part, Triangle is a reliable partner for precision pins.
Machined pins are precision-turned cylindrical components used for alignment, retention, or load control in assemblies. They are commonly found in powertrain systems, hydraulic cylinders, aerospace linkages, and industrial equipment where tight tolerances and reliability are critical.
Yes, Triangle Machine Products specializes in fully custom machined pins and shaft pins made to your exact specifications. We support everything from prototypes to high-volume production based on your drawings, CAD models, or sample parts.
We machine precision pins from a wide range of materials including carbon steel, alloy steel, stainless steel, aluminum, brass, and tool steel. Material selection is based on your requirements for strength, corrosion resistance, or wear performance, and certifications can be provided upon request.
If you have any questions about our machined pins, our machined pin turnings machines, our custom machined 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.
