S-91677A118 5/16"-18 x 1" 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 black-oxide coating that extends service life in demanding industrial environments
- Exceptional holding power from Rockwell C32 hardness alloy steel construction that maintains clamp force under vibration
- Precise thread engagement with Class 2A fit UNC coarse threads ensuring reliable installation and consistent performance
- Easy installation and removal through 5/32" hex drive design that provides secure tool engagement without stripping
- Enhanced gripping capability from ball tip design that creates positive contact points on shaft surfaces
- Optimized for high-torque applications with right-hand coarse threads that resist loosening under dynamic loads
- Compliance with international standards including RoHS 3 and REACH for use in regulated industries worldwide
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in precision assembly applications where vibration resistance and reliable positioning are critical. The combination of UNC coarse threads with Class 2A fit provides optimal engagement in both soft and hard materials, while the ball tip construction ensures maximum surface contact for superior torque transmission. Engineered for industrial machinery, automotive components, and power transmission systems, this headless set screw solves common challenges of component slippage and positional drift. The hex drive design allows for high-torque installation in confined spaces, making it ideal for permanent fastening applications requiring durable, maintenance-free performance.
Specification Summary & Compliance
This 5/16"-18 UNC set screw features precise Class 2A thread fit per ASME standards with coarse thread spacing for optimal engagement. Manufactured from alloy steel with Rockwell C32 hardness and Rockwell C60 ball tip hardness, the fastener meets rigorous industrial requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and chemical safety in global manufacturing applications.
