Description Socket Head Cap Screws Alloy Steel 1-1/2-12 x 4 are engineered for high-torque fastening in precision assemblies. Crafted from alloy steel, these screws deliver enhanced strength and durability for demanding industrial, automotive, and machinery applications. Designed for smooth, flush seating and reliable torque transfer, these socket head cap screws feature a hex socket drive for safe, controlled tightening. The 1-1/2 inch diameter, 12 threads per inch (1-1/2-12), and 4 inch length make them ideal for thick materials and heavy-duty assemblies where space allows. Size: 1-1/2″ diameter, 12 TPI, 4″ length Drive: Hex socket Material: Alloy steel Applications: Heavy machinery, automotive, fabrication, and equipment assemblies requiring strong, reliable fasteners Why choose these screws: they offer an excellent strength-to-weight ratio, solid fatigue resistance, and dependable performance under high-load conditions. For best results, pair with compatible nuts and washers and follow standard torque guidelines for alloy steel fasteners. Add these socket head cap screws to your toolkit to ensure secure, accurate, and long-lasting fastenings for your projects.