These precision-engineered socket shoulder screws combine strength and versatility for your mechanical assembly needs. Crafted from durable alloy steel with a black oxide finish for enhanced corrosion resistance, each screw features a 1/2-inch shoulder diameter and 3/8-16 thread specification with a 1-1/4 inch length. The shoulder design provides a smooth bearing surface for rotating parts while maintaining tight tolerances. Perfect for applications requiring a precise fit and rotation, such as pivot points, guide rollers, and mechanical linkages. The hex socket head allows for easy installation and removal using standard hex keys. This 3-pack of shoulder screws delivers industrial-grade quality for both professional and DIY applications. The black oxide coating helps prevent rust while providing an attractive finish that maintains its appearance over time. Ideal for machinery, equipment assembly, and various mechanical applications where reliable performance is essential.