336 Pcs Black M4 Flat Head Machine Screws and Nuts Bolt Kit | High-Strength Carbon Steel Black Oxide, M4 x 6/10/12/16/18/20mm, Precision Fasteners for DIY & 3D Printing, Storage Box - size: 336Pcs M4*6/10/12/16/18/20mm-Flat

About this item

• COMPLETE M4 SCREW & NUT COMBO: Stop searching for matching nuts. This 336-piece kit provides 168 precision-engineered M4 screws in 6 essential lengths (6-20mm) paired with 168 matching hex nuts, ensuring a perfect 1:1 fit for all your fastening needs without extra hardware store trips.
• REINFORCED CARBON STEEL TOUGHNESS: Engineered from premium high-strength carbon steel, our screws offer superior hardness compared to common stainless steel. The advanced black oxide finish provides enhanced rust resistance and a sleek look, making them ideal for high-torque mechanical assemblies.
• FLUSH MOUNT FLAT HEAD DESIGN: Achieve a professional, clean finish every time. The countersunk flat head design allows the screw to sit perfectly flush with the surface, preventing snagging or catching—perfect for furniture assembly, electronic enclosures, and smooth-surface DIY projects.
• PRECISION THREADS, NO STRIPPING: Tired of rounded heads? Our Phillips drive is deep and accurately formed to prevent cam-out and stripping even under heavy pressure. Each screw features clean, burr-free threads that glide smoothly into the included nuts for a secure, vibration-resistant hold.
• ULTIMATE VERSATILITY & ORGANIZATION: Whether you're repairing a 3D printer, building a drone, or fixing household fixtures, this M4 assortment is your go-to solution. Neatly organized in a durable, labeled compartment box that keeps sizes separated even after long-term use in your workshop.

Overview

• Material: Alloy Steel
• Head Style: Flat
• Item dimensions L x W x H: 7.48 x 3.94 x 0.67 inches
• Exterior Finish: Alloy Steel
• Thread Size: M4x6/10/12/16/18/20mm