398PCS M5 Socket Head Cap Bolts Kit with Nuts, Flat & Spring Washers - size: G12.9 M5 398PCS

About this item

• 【398PCS M5 Socket Head Screw Assortment】Includes 398 pieces of M5 socket head cap screws, matching hex nuts, flat washers, and spring lock washers. Covers 8 commonly used lengths (M5 x 8, 10, 12, 16, 20, 25, 30, and 35 mm), providing a practical assortment for maintenance, assembly, repairs, and DIY projects.
• 【12.9 Grade Alloy Steel Construction】Manufactured from 12.9 grade alloy steel for high tensile strength and wear resistance. Designed for demanding fastening applications that require reliable mechanical performance and consistent fastening strength.
• 【Black Zinc-Plated Finish】Each fastener features a black zinc-plated coating that helps resist rust and corrosion during everyday use. The black finish also provides a clean appearance that complements machinery, automotive components, tools, and dark-colored equipment.
• 【Precision Threads & Hex Socket Drive】Precision-machined M5 metric threads provide smooth installation and reliable engagement with the included nuts. The hex socket drive supports stable torque transfer and helps reduce slipping during tightening for secure fastening.
• 【Organized Storage & Wide Applications】All components are neatly organized in a compartment storage case with clearly labeled for quick size identification and convenient storage. Suitable for machinery repair, 3D printers, bicycles, RC models, electronics, furniture assembly, workshop maintenance, automotive service, and general DIY applications.

Overview

• Material: Alloy Steel
• Thread Size: M5 x 0.8
• Exterior Finish: Zinc
• Manufacturer Grade: 12.9
• Head Style: Hex Socket Head