These carriage bolts are made of high-quality 304 stainless steel, with high hardness, corrosion resistance, rust resistance, beautiful and practical, suitable for indoor and outdoor use. Even in a humid environment, it will not rust and has a strong antioxidant capacity.

Packing list: 10PCS
Carriage bolt: thread size 1/4-20 inches, screw length 3 inches (96.2 mm).
10 compatible hexagon nuts: thread size 1/4-20 inches, thickness 5.56 mm, opposite side size 11.11 mm.
10pcs 1/4Inch Blots special flat washers: size 7x16x1.5mm.

The above carriage bolts, hexagon nuts and flat washers are all made of stainless steel. They are produced in the same standard and can be tightened well and are easy to fix and install.