5 Pcs 1/2"-13 UNC Coarse Thread Hex Nuts, Grade 8 Black Oxide Carbon Steel Fasteners for Heavy Machinery & Structural Fastening

About this item

• Made of Grade 8 carbon steel with black oxide finish. Comply with ASME/ANSI B 18.2.2 standards, featuring high strength, wear and corrosion resistance. Smooth surface and burr-free edges ensure safe grip.
• Ideal for mechanical assembly and maintenance. Perfect to match bolts and washers of matching specs to achieve firm connection. It works great for devices that need corrosion protection both indoors and outdoors.
• High hardness & load capacity, standard threads stay tight without slipping. Easy to install with regular wrenches, anti-rust and corrosion resistant for long use.
• Ideal for industrial & agricultural machinery, equipment, furniture, vehicle repair, model making, chainsaw maintenance and various DIY projects.