Precision Screw Machining

Our precision thread machining service specializes in producing high-accuracy internal, external, trapezoidal, triangular, and rectangular threads for connecting and transmission parts across general machinery, automotive, electronics, aerospace, and medical devices. This precision screw machining capability works with materials like carbon steel, alloy steel, stainless steel, aluminum, copper, titanium, and engineering plastics, available in general connection, precision transmission, and high-strength wear-resistant grades. From prototypes to production volumes, our precision thread machining ensures thread reliability and performance under various operational demands.

We machine metric threads from M1 to M100 and imperial threads from 1/8" to 4", with pitches ranging from 0.25mm to 5mm. Thread accuracy conforms to GB/T 197-2003 standards-4H-6H for internal threads and 4h-6h for external threads. Our precision screw machining can be applied to shafts, sleeves, discs, plates, and other structural parts, supporting single-piece customization, small-batch trials, and mass production. Using dedicated thread-cutting equipment and optimized tooling, we control pitch diameter tolerance within ±0.005mm, achieve high tooth-profile accuracy, and deliver surface finishes as smooth as Ra0.8μm.

We tailor machining parameters to each material to prevent issues like chipping or built-up edge. For transmission threads, heat treatment can be applied to improve hardness and wear resistance. Based on your drawings, material specs, and application needs, we develop custom precision thread machining solutions and conduct full-process inspection of thread geometry and surface quality. Partner with us for precision screw machining that guarantees secure connections, efficient power transmission, and long-term reliability in your assemblies.