The RDH SQN CRG BLT 5/16-18 X 28L from Elkay Mfg Company is a high-strength square neck carriage bolt designed for secure fastening in various applications. Measuring 5/16-18 in diameter and 28 inches in length, this bolt is made from durable materials that ensure long-lasting performance. It is ideal for use in construction and mechanical assemblies, providing reliable strength and compliance with industry standards. The square neck design prevents rotation during installation, making it a preferred choice for professionals.