435pcs M6x12-40 mm Assortment of 6-Sided Screws with Nuts and Washers - Hexagon Cylinder Head Screws in Carbon Steel 12.9 - Keys Included

The hex socket head screw set is made of 12.9 carbon steel, which is wear-resistant, moisture-proof and durable, which has good resistance to extension and corrosion in many environments The surface is smooth and even; deep thread, not uniform, easy to use, good fixing effect. The surface of the flat head screws is oxidized and blackened. They are typically used in applications requiring high mechanical performance It contains 435pcs 7 sizes most commonly used hex head bolts M6 screws nuts. M6x12/16/20/25/30/35/40mm A Hex Allen Key (M5) is also provided for easy installation The screws and nuts are stored in a storage box that allows you to easily find yourself in the series and avoid losses when needed. No worries about damage or mess It can be used for fasteners in household and office appliances, communication equipment, ship assembly and other mechanical industries. Applies to confined areas where the head should be flush or below the surface