S-91301A033 1/2"-13 x 1/4" 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
- Exceptional holding power from Class 3A thread fit ensuring secure, vibration-resistant fastening in demanding applications
- Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in harsh industrial environments
- High durability and wear resistance thanks to Rockwell C45 hardness, maintaining performance under repeated use
- Easy installation and removal with 1/4" hex drive, providing reliable torque transfer without stripping
- Precision coarse threading (1/2"-13 UNC) for quick assembly and strong engagement in various materials
- Space-saving headless design allowing flush mounting where clearance is limited
- Compliance with international safety standards including RoHS 3 and REACH for environmentally responsible manufacturing
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance in precision machinery, automotive components, and industrial equipment where vibration resistance and reliable positioning are paramount. The Class 3A thread fit provides tighter tolerances than standard fasteners, eliminating play in high-precision assemblies. The coarse UNC threading ensures rapid installation while maintaining strong holding power in soft materials or when frequent adjustments are required. The headless design with hex drive solves space constraint issues in compact assemblies while allowing sufficient torque application. Manufactured from alloy steel with Rockwell C45 hardness, this set screw withstands repeated tightening cycles without deformation, making it ideal for permanent or semi-permanent fastening applications in manufacturing, robotics, and heavy machinery.
Specification Summary & Compliance
This precision set screw features 1/2"-13 UNC coarse threads with Class 3A fit for superior dimensional accuracy and thread engagement. Manufactured to inch system standards with right-hand threading and 1/4" length. The component meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental safety and regulatory adherence for industrial applications worldwide.
