3/8-24 x 1 1/2 Alloy Steel Flat Head Socket Cap Screw with Nylon Insert is specified where a recessed flat head, internal hex drive, and alloy steel nylon insert fastener are required. It is a practical option when purchasing teams want a socket-drive fastener with an integrated nylon insert feature. The nylon insert provides prevailing-torque resistance that can help reduce loosening in machinery subject to vibration or repeated movement. The 3/8-24 x 1 1/2 size supports exact catalog selection for automation systems, tooling plates, machine frames, and engineered fastening locations. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Industrial machinery, maintenance repairs, production equipment, and equipment rebuilds are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.