S-91318A550 5/16"-24 x 5/32" Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Exceptional holding power ensured by the Class 3A fine thread fit, providing a precise, secure, and vibration-resistant connection.
- High-strength performance with a Rockwell B80 hardness, offering excellent durability and resistance to wear under load.
- Easy and secure installation using a standard 5/32" hex drive, allowing for high torque application without head protrusion.
- Reliable right-hand UNF fine threading for improved engagement in materials where fine adjustments and strong clamping are critical.
- Full regulatory compliance with RoHS 3 and REACH, ensuring safety and environmental standards are met for global industrial use.
- Space-saving headless design that sits flush with or below the surface, perfect for compact assemblies and rotating parts.
Professional Applications & Engineering Value
This 18-8 stainless steel set screw is engineered to address critical challenges in precision assemblies, such as vibration loosening and corrosion. The UNF fine thread and Class 3A fit deliver a tight, accurate engagement that maintains clamp load in high-stress applications, from machinery to automotive components. Its headless hex drive design allows flush mounting, eliminating interference in confined spaces and on rotating shafts. Made from corrosion-resistant stainless steel, it ensures long service life in humid or chemically aggressive environments, reducing maintenance and replacement costs. This fastener is a trusted solution for engineers seeking reliable, compliant, and high-performance set screws for demanding industrial uses.
Specification Summary & Compliance
This set screw features a 5/16"-24 UNF fine thread with a Class 3A thread fit for high precision and strength. It adheres to inch system standards, with a thread diameter of 0.313" and length of 5/32". The Rockwell B80 hardness ensures consistent performance under mechanical stress. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for industrial applications.
