M4 x 6mm 8mm 10mm 12mm 16mm 20mm 25mm Hex Socket Head Cap Screws Bolts and Nuts, Metric Allen Hex Drive, 12.9 Grade Alloy Steel, Black Oxide Finish, Fully Threaded, Assortment Kit 200PCS

The material is made of high quality 12.9 Grade alloy steel. Their surfaces are treated with black oxide, which has excellent corrosion resistance, firmness, wear resistance and low temperature resistance. Widely used in various precision machinery industries, classified instruments, meters, electronic products, household appliances, communication products, automobiles, locks, lamps, toys and so on. Specifications: Head Style: Socket Head Quantity: 200PCS Material: 12.9 Grade Alloy Steel Main Color: Black Package Included: M4 x 6mm (20PCS) M4 x 8mm (20PCS) M4 x 10mm (20PCS) M4 x 12mm (20PCS) M4 x 16mm (20PCS) M4 x 20mm (20PCS) M4 x 25mm (20PCS) M4 Nuts (60PCS) Allen Key (1PCS) Package Quantity: Total: 200 PCS, M4 Hex Socket Head Cap Screws Nuts Assortment Set Warranty: Whenever you need us, please contact us by email or Q&A. We will provide you with professional services and reply to you as soon as possible. If you are not satisfied with the product, you can get a full refund, and you can buy it with confidence.