Swordfish 31920 Stainless Steel Nut Bolt & Washer Assortment, 224 Piece Cross recessed round head machine bolts nuts with flat gaskets kit 8 sizes of round Philips drive head screws, 4 sizes of flat washer, 4 sizes of hex nut Convenient re-sealable plastic case Useful parts kit for your shop Stainless steel material to resist rust