PRODUCT NAME - M4 Socket Head Screws Bolts, With Assorted Nuts and Bolts & Hex Spanner For Each Box, Various Sizes of M4 Screws And Precise Threads For Different Usage. Thread Diameter: 4mm; Screw Length: 8mm; Thread Pitch: M4x0.7mm; Hex Drive Size: 3mm. MATERIAL - 304 stainless steel material M4 bolts. Mywish 304 stainless steel M4 screws have been rigorously tested, better corrosion and anti-rust performance in different extreme environment. Strong solid structure and long-lasting M4 screw kit. Please note that the magnetic properties of 304 steel always show weak magnetic properties due to the structure transformation reasons. WIDE RANGE OF APPLICATIONS - 400Pcs M4 screw kit. Stainless socket head cap M4 bolts screw are suitable for furniture assembly (beds, tables, cabinets, chairs, etc.), woodworking projects (joining wood, boards, workbench, kitchen worktops), office appliances, 3D printing, machinery repair, communication equipment, ship assembly, and various machinery industry needs. PACKAGING - 100 sets metric M4 screw set, comes with sturdy and reusable transparent storage container. Label with the size and quantity of M4 bolts. Easy to distinguish the size of bolts. Provide variable solutions to meet diverse situation. All within a assorted screws kit. AFTER SALE SERVICE - MYWISH team aims to provide our customers with a professional service. Dedicated to promptly solving any concerns or queries. Please contact us if you have any issues with the products.