1. Product Overview - Includes 1 piece of 20mm diameter lead screw - Specifications: Pitch 4mm, Lead 4mm, Single Start - Total Length: 160mm (6.3 inches) - Comes with 1 brass lead screw nut; no end machining - Customization available upon request (refer to Pic 2) 2. Versatile Nut Options - Standard round brass nut included - Additional options: square brass nut, trimming brass nut, POM round nut, POM trimming nut, stainless round nut, stainless hex nut - Please inquire about specific nut requirements (see Pics 3, 4, 5) 3. Comprehensive Lead Screw Solutions - Wide range of lead screws available with various diameters, lengths, pitches, and materials - Related products offered, including taps for nut fabrication - Tailored solutions to meet diverse project needs 4. Reliable Customer Support - Dedicated service team available 24/7 to address inquiries - Technical support provided before, during, and after your purchase - Committed to building long-term relationships with customers for a satisfying shopping experience Use Scenarios - Ideal for CNC machines requiring precise movement - Perfect for 3D printers needing reliable feed mechanisms - Suitable for automation projects that demand consistent linear motion