- Product Overview : This product includes one 20mm lead screw (rod diameter: 20mm; pitch: 4mm; lead: 8mm; 2 starts) with a total length of 310mm (12.2 inches). It comes with one brass lead screw nut, with no end machining included. Custom lead screws are available; please contact us for details. - Versatile Nut Options : The standard round brass nut accompanies the lead screw. Additional nut types available include square brass nuts, trimming brass nuts, POM round nuts, POM trimming nuts, stainless round nuts, and stainless hex nuts. Refer to the images for options, and let us know your specific requirements. - Comprehensive Lead Screw Solutions : We offer a wide range of lead screw styles, including various diameters, lengths, pitches, leads, and materials. Whether you need taps for nut manufacturing or other related products, we can meet your needs. - Reliable Customer Support : Our professional service team is available 24/7 to assist you with any inquiries. We are dedicated to providing technical support before, during, and after your purchase, ensuring a satisfactory shopping experience. - Applications : Ideal for CNC machines, 3D printers, and other precision engineering applications, this lead screw system enhances movement accuracy and mechanical reliability. - Key Attributes : Lead screw diameter: 20mm; Total length: 310mm; Pitch: 4mm; Lead: 8mm; Material: brass (nut included). Choose our lead screw for dependable performance and adaptability in your projects. Contact us for customization inquiries and detailed assistance.