5/16-18 X 2 1/2 CARRIAGE BOLT ALUMINUM
The 5/16"-18 x 2 1/2" Aluminum Carriage Bolt is designed for secure and dependable road sign installation in traffic control and roadway applications. Commonly used to attach traffic signs, brackets, and mounting hardware to sign posts, these carriage bolts provide a clean, finished appearance with a smooth rounded head that helps reduce tampering and snagging.
Made from lightweight, corrosion-resistant aluminum, these bolts are ideal for outdoor environments where rust resistance and long-term durability are important. The square neck beneath the head locks into place during installation, helping prevent the bolt from turning while tightening the nut for a secure hold.
Perfect for use with aluminum sign panels, U-channel posts, square posts, and other traffic sign mounting systems.
Gauge: 5/16-18
Length: 2 1/2"
Material: Aluminum