Usage: These slider bolts, butterfly nuts, and flat washers are all made of carbon steel and produced to the same standard, which can be tightened well and is easy to fix and install. About this item 10Pcs M3 304 Stainless Steel Hexagon Bolts Nuts Assortment Kit Metal Specification: Size: 5/16 Thread: 18 Length: 2 Material: Galvanized Iron Package includes: 10 x Carriage Bolts 10 x Wing Nuts 10 x Washers These carriage bolts are made of high-quality carbon steel, with high hardness, wear resistance, rust prevention, aesthetics, and practicality, suitable for indoor and... Material: High-quality carbon steel, high hardness, corrosion resistance, rust prevention, beautiful and practical. 5/16-18x2 Hex Bolts 304 Stainless Steel Hexagon Screw Bolt 5/16-18x2 Bolts And Nuts CARRIAGE SCREWS SS 5/16-18X2-1/2 | ACE Hardware 5/16-18 Carriage Bolts Use a wrench to rotate the square neck bolt and tighten it to complete the installation. Cheat Guide Chart - Bolts, Screws, Washers, Nuts, Drive Charts Installation: Easy to repair and install. Occasion: Suitable for indoor and outdoor use, it will not rust even in humid environments and has a high antioxidant capacity.