Specifications High-concerned chemical:None Dimensions:M3*20 DIY Supplies:Metalworking Model Number:M3*6/8/10/12/16/20/25mm Material:Stainless Steel Origin: China p{margin-block-start: 0; margin-block-end: 0} High Quality MaterialThe assorted screws and nuts are made of 304 stainless steel, which feature is strength and offers resistant to rust, good corrosion resistance in bad environment like high temperature, commonly have a sharp point that helps penetrate the material. 7 Different SizesThere are 600 pieces cross pan head screws, nuts, flat washers, and lock washers. Contains 150 pcs M3 x 6/8/10/12/16/20/25 MM pan head screws and 150 pcs M3 nuts, 150 pcs flat washers, 150 pcs lock washers to meet your demands. All packed in a sturdy portable case for easy carrying and storage. Easy to UseWith the nuts and washers, the installations are more precise and easier. The threads of the hexagon stainless steel screws are sharp and accurate that is not easy to deform and slide in the working process, which is easy to use. Wide ApplicationM3 pan head machine bolts and nuts assortment kit suitable in all kinds of precision machinery, classified instruments, electronic products, household appliances, communication products, locks, lamps, lights, toys and so on.