S-91301A100 4-48 x 5/64" 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 holding power with Class 3A thread fit ensuring precise, vibration-resistant fastening in demanding applications
- Exceptional corrosion resistance from black-oxide coating protecting against industrial environments and extending service life
- High-strength performance backed by Rockwell C45 hardness alloy steel for reliable load-bearing capacity
- Secure installation with 0.050" hex drive providing positive torque control and reducing tool slippage
- Space-saving design as a headless set screw ideal for compact assemblies where protruding fasteners are impractical
- Fine thread engagement with 4-48 UNF right-hand threads delivering superior clamping force distribution
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial supply chain integration
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering advantages in precision assemblies requiring minimal profile and maximum reliability. The Class 3A thread fit combined with fine UNF threading ensures zero backlash in sensitive equipment like optical mounts, precision instruments, and servo mechanisms. The headless design solves clearance issues in confined spaces while the Rockwell C45 hardness maintains dimensional stability under cyclic loads. Black-oxide surface treatment provides essential corrosion protection without altering dimensional tolerances, making these set screws ideal for aerospace components, medical devices, and automated manufacturing systems where vibration resistance and long-term performance are paramount.
Specification Summary & Compliance
Manufactured to UNF thread standards with Class 3A precision tolerance for consistent threading engagement. The 4-48 thread size features fine thread spacing and right-hand direction with 0.112" thread diameter and 5/64" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.
