649PCS M3 Hex Socket Head Screws Assortment Kit, M3x30 /35 /40 /45 /50 mm | M3-0.5 Screws, Nuts and Washers Assorted Kit, 12.9 Alloy Steel Black Zinc Plated Anti-Rust 3mm Bolts Set for 3D Printer,DIY

Features

• Perfect for DIY Projects This m3 screw assortment kit are ideal for hobbyists working with 3D printing, electronics, RC models, DIY repairs, chair replacement and CNC machinery, offering precision for intricate designs.
• Standardized Metric Sizes -The M3 hex socket head cap screws set come with 5 commonly used lengthsM3 x 30mm, 35mm, 40mm, 45mm, 50mmideal for routine installations and repairs. They meet standard metric specs, the average error is less than 0.01mm.
• Premium 12.9 Grade Alloy Steel- This M3 bolts, nuts and washers assorted kit are crafted from high-strength 12.9 grade alloy steel, ensuring exceptional durability and load-bearing capacity. High-strength steel resists wear, corrosion, and heavy loads, ideal for harsh environments.
• Oil-Free & Rust-Proof -Black zinc plating means no greasy messkeep hands and projects clean. Superior rust resistance ensuring long life.This 3mm black allen screw set perfect for any indoor/outdoor use.
• Smart Storage Box - The metric machine screws kit comes in a durable, compartmentalized case with clear size labelsso you can spot the right screw instantly. Keeps your workspace tidy and speeds up project progress, making every job smoother.