236 Pcs M4 Vis et écrous, M4 Vis Boulons et écrous, Vis et Boulon et Rondelles Set, Vis à Tête Hexagonale Ronde Assortiment Kit, Visserie Boulons Vis à Six Pans Creux à Tête pour Réparation, Noirs

10.9 Grade Carbon Steel, Sturdy and Durable The M4 screw kit is made of high quality 10.9 grade carbon steel, with high hardness, large torque, strong stability, not easy to break or deform, corrosion resistant, not easy to rust, provides high performance in any environment, is durable and can serve you for a long time. Hex Socket Screws and Nuts Set with Washers: The thread is neat, the force is evenly distributed and it can be easily mounted and disassembled with the supplied hex key. Hex socket screw kits are equipped with a wide bearing surface that provides more space with limited hardware, making them less easy to loosen and achieve better mounting effect. Hex Nuts & Washers - Flat washers can increase the contact area, protect screws, extend the service life and provide strong holding force as well as maximum clamping force. Hex nuts can make your installation more accurate, better fixed and carry larger loads; Use in multiple scenarios: Suitable for assembly, maintenance and DIY work in offices, factories, apartments and workshops. Widely used in the field of fixing machinery, communication devices, electromechanical appliances, marine equipment, household appliances, mechanical engineering, cars, motorcycles and other parts. Box contents: a total of 236 pieces, sizes and quantities include: 20 pieces M4 x 6 mm, 15 pieces M4 x 8 mm, 10 pieces M4 x 12 mm, 10 pieces M4 x 16 mm, 10 pieces M4 x 20 mm, 10 pieces 0pcs M4 *30mm, 85pcs M4 washers, 75pcs M4 nuts, 1pc screw wrench, enough quantity, large size to meet the usage requirements of different scenes and regions.