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Socket Shoulder Screws, Thermal Black Oxide, Alloy (Inch)
Alloy steel socket shoulder screws with a thermal black oxide finish are precision fasteners engineered for applications requiring accurate alignment, pivoting, sliding, or mounting movement within mechanical assemblies. Also known as shoulder bolts or stripper bolts, these screws feature a precision‑ground shoulder and a socket head, allowing them to act as guides, axles, pivots, and bearing surfaces in automated machinery and tooling.
The thermal black oxide coating enhances wear resistance, improves lubricity during installation, and provides a uniform, low‑glare black finish ideal for industrial equipment. With high tensile strength and tightly controlled shoulder dimensions, these screws offer dependable performance in robotics, fixtures, jigs, mold components, linkages, and high‑precision machinery.
For large scale orders, request a quote to receive our best pricing available for your custom order.
Socket shoulder screws are specifically designed for assemblies where components need to rotate or slide along a smooth, accurate surface. The precision shoulder diameter supports stable movement, while the threaded section delivers strong clamping force. The internal hex (Allen) drive allows high torque and secure installation even in tight or recessed mounting locations.
The alloy steel construction ensures excellent strength and fatigue resistance, making these screws suitable for heavy mechanical loads. The thermal black oxide finish adds mild corrosion resistance and improves handling for maintenance and production environments.
Available in multiple shoulder diameters, lengths, thread sizes, and tolerances to meet a wide range of OEM and industrial engineering specifications.
