At Triangle Machine Products, we specialize in the production of custom specialty bolts and fasteners that demand more than just standard dimensions. Our bolts are engineered to meet unique mechanical, environmental, or installation requirements—and are machined with precision to ensure consistent performance in the most exacting applications.
While many bolts can be produced through high-volume cold heading, certain projects require a level of detail and tolerance control that only CNC machining can achieve. That’s where Triangle delivers. From specialized head profiles to complex thread features and tight shoulder tolerances, we manufacture specialty bolts that function as engineered solutions—not just hardware.
Specialty bolts are often the unseen elements that hold systems together under extreme stress or in non-standard environments. Triangle Machine Products manufactures bolts that go beyond the ordinary—components with specific thread types, multi-diameter shanks, drive features, undercuts, or load-bearing shoulders. These fasteners are not just designed to hold—they’re built to solve problems, whether related to alignment, vibration, thermal cycling, or access limitations.
We produce specialty bolts used in heavy machinery, high-vibration applications, assembly tooling, hydraulic systems, and structural joints. With a fully machined process, we can guarantee dimensional accuracy where it matters most—shoulder-to-thread transitions, thread engagement depth, surface finish, and alignment with mating parts. When your bolt isn’t just a bolt, Triangle makes sure it performs like a precision part.
Every custom bolt starts with an understanding of the problem it’s meant to solve. Whether it’s a need for better load distribution, reduced backlash, tamper resistance, or simply a tighter fit than standard bolts allow, we manufacture custom specialty bolts designed with intent. Our process supports full customization—from head design and shank profile to threading, material selection, and finish.
Using CNC turning centers and multi-spindle screw machines, we machine bolts to exacting tolerances from materials such as carbon steel, stainless steel, brass, and specialty alloys. Optional features include hex, flange, or slotted heads; stepped or shouldered shanks; drilled holes; thread reliefs; and custom thread pitches. We support low- and high-volume production, prototyping, and design validation—all backed by in-process quality controls.
In many assemblies, the bolt is an afterthought—until it fails. At Triangle Machine Products, we understand that specialty bolts and fasteners are only as good as the precision behind them. That’s why we machine every part with a focus on fit, function, and repeatability. Our customers turn to us not just for custom parts—but for bolts that eliminate alignment issues, reduce assembly time, and increase service life.
We offer quick turnaround, technical collaboration, and reliable scalability for projects ranging from R&D to full production. Most importantly, we offer control—control over tolerances, over geometry, over material behavior, and over every dimension that affects your assembly’s performance. When it has to fit, when it has to hold, when it has to last—Triangle is the partner that delivers.
Specialty bolts are non-standard fasteners designed to meet specific performance, installation, or geometric requirements. Unlike generic bolts, they may include custom heads, unique threading, precision shoulders, or application-specific materials.
Yes. Triangle produces fully custom-machined specialty bolts made to your drawings or engineered requirements. We can tailor dimensions, threads, head styles, and finishes to meet your exact application needs.
Industries such as automotive, aerospace, heavy equipment, automation, energy, and defense benefit from specialty bolts that deliver higher reliability, tighter tolerances, and longer service life under demanding conditions.
If you have any questions about our machined specialty bolts, or the types of bolts 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.
