Hollow Thru-Axle YM12-AP-K for Bicycle – YONGMAO

The Hollow Thru‑Axle YM12‑AP‑K is a high‑quality bicycle axle produced by Changzhou Yongmao Special Fastener Co., Ltd. under our brand YONGMAO. Designed as a lightweight alternative to solid axles, this component offers an excellent strength‑to‑weight ratio, making it ideal for performance‑oriented bicycles such as mountain bikes, gravel bikes, and e‑bikes. Its hollow construction reduces rotating mass while maintaining the rigidity required for precise handling and wheel alignment.

As a dedicated Bicycle Thru‑axle specialist, we apply advanced manufacturing techniques to ensure every axle meets demanding geometric tolerances. Our production relies on the Cold Heading Process, which enhances material grain flow and fatigue resistance compared to machined‑from‑bar alternatives. This process, combined with our multi‑station cold heading machines and in‑house deep‑hole drilling capabilities, allows us to produce axles with consistent concentricity and smooth internal bores. Each YM12‑AP‑K axle is inspected using projection meters, hardness testers, and concentricity gauges to verify critical dimensions and surface finish.

We recognize that bicycle frame designs vary widely across brands and standards. Therefore, we offer extensive customization through our Custom Non‑standard Fasteners service. The YM12‑AP‑K platform can be adapted in terms of overall length, thread pitch (e.g., M12×1.0, M12×1.5), head style, flange diameter, and drive type (hex, Torx, or spline). We can also apply surface treatments such as anodizing or zinc flake coating to meet your corrosion resistance and aesthetic requirements. Our engineering team works closely with customers to translate their drawings into production‑ready solutions, with rapid prototyping and scalable volumes.

Quality management is embedded in every stage of production. As an ISO9001 Certified Manufacturer, we maintain strict control over raw material sourcing, in‑process inspections, and final release. Our laboratory is equipped with universal testing machines, salt spray testers, and thread gauges to validate mechanical properties and dimensional accuracy. This commitment ensures that every YM12‑AP‑K axle delivers consistent performance and long service life in real‑world riding conditions.

While this model is tailored for bicycle applications, our manufacturing expertise also extends to automotive, railway, and agricultural fastener segments. However, the YM12‑AP‑K is specifically designed for wheel axles, offering a reliable and customizable solution for bicycle brands, aftermarket distributors, and frame builders. Partner with YONGMAO for competitive pricing, on‑time delivery, and dedicated technical support from prototype to production.

Specification Comparison of Various Bicycle Through Axles