This product is a Hollow Full-Threaded Rod (also known as: Full-Threaded Hollow Lead Screw, Hollow External Threaded Rod), featuring a “full external thread wrapping + hollow through-channel" design:
Key Parameters | Technical Analysis |
---|---|
Material System | Stainless steel 304/316 (main choices), carbon steel (galvanized) - 304/316: Resistant to acids, alkalis, and salt spray (salt spray test ≥ 100 hours), suitable for food, chemical, and marine applications. - Galvanized carbon steel: Cost - effective, very suitable for dry environments (salt spray test ≥ 48 hours). |
Thread Specification | Pipe threads (G1/8"–G2", NPT1/4"–NPT1"), metric threads (M8–M36) - Pipe threads: G is a parallel pipe thread (requiring a sealant); NPT is a tapered pipe thread (self - sealing, suitable for high pressure). - Metric threads: Designed specifically for mechanical structure connections, with a thread tolerance class of 6g. |
Customizable Dimensions | Length: L = 10–100mm (standard: 15/20/25mm); Outer diameter: D matches the thread (e.g., G1/2" outer diameter ≈ 20.95mm); Inner diameter: d = D - 2*wall thickness (wall thickness: 2–5mm) The hollow inner diameter can be customized (e.g., a larger diameter for cable threading), and the wall thickness ensures tensile strength (≥ 200MPa). |
Surface Treatment | Stainless steel mirror polishing (Ra ≤ 1.6μm), carbon steel with blue - white galvanizing/colored zinc plating Enhances corrosion resistance and aesthetics. Stainless steel can be customized through passivation, nickel plating, or other special treatments. |
Dual Attributes: “Full Thread + Hollow"
Full threads enable full-section adjustable connections (e.g., stepless height adjustment). The hollow design integrates functional channels (reducing external piping), weighing 30%–50% less than solid rods.
Multi-Standard Compatibility
Supports dual systems: metric threads (structural connection) + pipe threads (fluid connection). Materials range from economical (carbon steel) to high-end (316L), covering civil, industrial, and military applications.
Thread Precision Guarantee
Utilizes a thread rolling process for uniform threads. Pitch deviation ≤±0.02mm, with 100% go/no-go gauge inspection, ensuring compatibility with imported/domestic threads and preventing stripping.