M3 Screws 1000Pcs Socket Head Cap Screw Assortment Kit for 3D Printing DIY

Key features

• Electroplating Process + Oil-Free Design: Adopts high-quality electroplating technology with a smooth, dense surface free of greasy residues. No hand or tool staining during handling and installation, ensuring a clean and efficient construction process.
• 200+ Hours Salt Spray Test Certified: Complies with ISO 9227:2022 (Neutral Salt Spray/NSS) standard, with corrosion resistance exceeding 200 hours. No red rust on the surface, and white rust ratio ≤ 3%, easily adapting to harsh environments such as outdoor humidity and coastal high salinity.
• 12.9 Grade High-Strength Hardcore Quality: Meets 12.9 grade hardness standards, with tensile strength and shear resistance far superior to ordinary bolts. Capable of withstanding high-strength fastening requirements for heavy machinery and industrial supports.
• Rich specifications and ample quantity: This kit comes with 1000 Pcs M3 hex socket head cap screws, nuts and washers, featuring 6 frequently used lengths (6/8/12/16/20/30mm). It is ideal for assembly, fastening and maintenance of 3D printers, models, DIY projects and general hardware applications.
• High-Precision Thread Engagement: Thread accuracy remains unaffected after electroplating, enabling smooth screwing without jamming. Features strong fastening force, no easy loosening or slipping, and is compatible with various nuts and connectors.

Free shipping included. 30-day hassle-free returns.