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Custom Length Carbon Steel Pins: Match Your Exact Spec
Custom length carbon steel pins solve the problem of mismatching standard parts. We use CNC lathes for precision machining to ensure a tolerance of ±0.01 mm, which perfectly fits your design without the need for adjustment or on-site grinding. It is suitable for different size requirements such as sensors and automation.
Product Overview
Carbon steel pins in custom lengths solve a very specific problem: when off-the-shelf stock does not fit your assembly. We machine precision pins to your exact dimension, tolerance, and finish so they drop into your design without compromise. No adaptation, no grinding on your floor.
How custom length carbon steel pins fit
Whether you need a 12 mm pin for a sensor housing or a 200 mm guide for an automation shaft, our CNC lathes turn custom length carbon steel pins to ±0.01 mm tolerances . We start from S45C or S55C round bar, rough-turn to near-finish, then grind the final diameter. The pin arrives ready for press-fit or reamed installation—no secondary operations on your shop floor.
Minimum order quantities are flexible. A five-unit prototype run follows the same quality path as a 10 000-piece batch. Each lot ships with a material certificate and a dimensional report covering diameter, overall length, and runout.
Why carbon steel pins suit industrial use
Carbon steel gives you a strong stiffness-to-cost ratio. Compared with stainless it is lighter and cheaper to machine; compared with aluminum it holds a tighter surface finish after plating. For high-vibration environments—conveyor drives, molding clamps, pneumatic actuators—the hardness of 28–32 HRC after heat treatment prevents the micro-movement that loosens softer materials over time.
We offer plain, countersunk, and shouldered profiles in metric and imperial diameters from 1 to 30 mm . Finishes range from black-oxide to zinc plating, so the pin resists corrosion whether it sits inside a sealed gearbox or is exposed on an outdoor frame. For buyers in robotics or medical device work, we also produce stainless 304 and 316 variants to the same tolerances when the environment demands it.
If your current supplier cannot hit the length you need, or the lead time keeps slipping, send us a drawing or even a photo. We quote within 48 hours, hold tooling for repeat orders, and ship to over 40 countries with full traceability documentation on every carton.