S-91416A593 5/16"-18 x 2 1/2" ASME B18.6.2 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
- Maximum holding power with deep-biting cup point design that securely grips materials without slipping
- Exceptional durability from Rockwell C45 hardness alloy steel, resisting wear in demanding industrial environments
- Reliable coarse UNC threading (5/16"-18) provides superior engagement and vibration resistance in high-stress applications
- Precise Class 2A thread fit ensures consistent installation and optimal performance across assemblies
- Square head with external drive allows for high-torque installation using standard tools without stripping
- Full regulatory compliance with ASME B18.6.2 specifications, RoHS 3, and REACH for safe, standardized use
- Corrosion-resistant construction maintains integrity in harsh operating conditions, extending service life
Professional Applications & Engineering Value
This heavy-duty alloy steel set screw delivers critical engineering solutions where permanent, high-strength fastening is required. The cup point design bites deeply into shaft materials, preventing rotational slippage in pulleys, gears, and collars—solving common loosening issues in high-vibration machinery. With 5/16"-18 UNC coarse threads and Class 2A fit, it provides rapid assembly while maintaining precise tolerances. The Rockwell C45 hardness ensures the screw withstands repeated adjustments without deformation, making it ideal for industrial equipment, automotive components, and manufacturing fixtures where reliability is paramount. The square head with external drive accommodates high-torque applications where hex drives might strip under pressure.
Specification Summary & Compliance
This 2-1/2" length set screw features precise Class 2A thread fit with 5/16"-18 UNC coarse threads and right-hand direction. Manufactured to ASME B18.6.2 specifications for dimensional accuracy and performance consistency. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence for global industrial applications.
