Fractional Size Shoulder Socket Head Cap Screw 18-8 Stainless Steel Material
Fractional Size Shoulder Socket Head Cap Screws
18-8 Stainless Steel Precision Fasteners
Fractional size shoulder socket head cap screws made from 18-8 stainless steel are precision-engineered fasteners designed for applications that demand strength, corrosion resistance, and accurate alignment. Featuring a smooth, unthreaded shoulder beneath the head, these screws provide a built-in bearing surface that supports shear loads, maintains spacing, and allows for controlled movement between assembled components. The socket head design enables high-torque installation using a hex key, making them ideal for compact and high-performance assemblies.
18-8 Stainless Steel Material Benefits
Corrosion Resistance and Mechanical Reliability
18-8 stainless steel (commonly equivalent to Type 304) offers excellent resistance to rust, oxidation, and mild chemical exposure. This material performs well in indoor, outdoor, and moderately corrosive environments, making it a versatile choice for industrial, commercial, and marine-adjacent applications. In addition to corrosion resistance, 18-8 stainless steel provides dependable tensile strength, good ductility, and long service life without the need for additional coatings or plating.
Unlike coated fasteners, 18-8 stainless steel shoulder screws maintain consistent dimensions, which is critical for tight-tolerance applications requiring precise shoulder diameters and lengths.
Function and Applications
Alignment, Load Distribution, and Pivoting Action
Fractional shoulder socket head cap screws are commonly used as pivot pins, axles, guides, spacers, and locating fasteners. The smooth shoulder carries shear loads while keeping stress off the threaded portion, ensuring consistent performance and reduced wear. These screws are ideal when components must rotate, slide, or remain perfectly aligned during operation.
Typical applications include machinery assemblies, automation systems, robotics, fixtures, tooling, conveyors, and equipment frames. Fractional sizing allows compatibility with inch-based designs and legacy equipment.
Specifications and Industry Use
Designed for Precision and Performance
These fasteners are available in a range of fractional diameters, shoulder lengths, and thread sizes, meeting industry standards for accuracy and interchangeability. They are widely used across industries such as manufacturing, food processing, medical equipment, electronics, automotive, and general industrial maintenance.
For engineers and maintenance professionals seeking corrosion-resistant, precision fasteners with dependable load-bearing performance, 18-8 stainless steel fractional shoulder socket head cap screws deliver lasting reliability and exacting fit.