Items DescriptionMaterialhex nut: 304(A2-70)stainless steelbrass hex nut:solid brassnylon insert lock nut: 304(A2-70)stainless steelflange nut: 201 stainless steelnylon hex nut : nylonBox include5 kinds nuts whole 685pcsFAQ:1.How long will my equipment ship out?We will ship out as soon as possible, Usually all the package could be send out inside 48 hours.2. Wholesalers and merchants are welcomed.For wholesale, just please touch to us, we can offer discount. If you are a store and need make your own business, we could send the products on your customers instantly and won't depart details about us if you'd like to.3.What should I do if I don't obtain my item? Or the product has some problem?Please touch us first, we will do our greatest to solver it, we want to supply full refund or resend it for you. We are honest seller, so don't worry.4.How to do when I measure the size is smaller than ordered?Usually the screw will be appearance smaller, If you utilize the unique rule to measure the screw, perchance it will have error, it will be look smaller. The correct method to measure the screw is by vernier caliper.5.The stainless-steel fastener can be attracted by a magnet.Most humans suppose the chrome steel can't be attracted by means of a magnet. But the stainless-steel has many systems, some can’t be attracted via magnet, but some can. And the chrome steel will have slightly magnetic after it made to screw or different thing. If want the stainless-steel can't be attracted through a magnet, Demagnetization is required. The correct method to discern it is stainless steel or no longer is useing spectroscopic instruments or potions.Please have confidence us, we only promote the effective chrome steel fastener.