S-91375A735 4-40 x 5/16" ASME B18.3, ASTM F912 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 zinc plating that protects against rust in demanding industrial environments
- Exceptional holding power achieved through Class 3A thread fit precision, ensuring secure fastening without loosening
- High-strength durability from Rockwell C45 hardened alloy steel that withstands heavy loads and repeated use
- Easy installation and removal with hex drive design that provides reliable torque transfer and prevents tool slippage
- Optimized grip performance with cup tip design that creates concentrated pressure points for superior component retention
- Industry-standard compatibility with UNC coarse threads that ensure broad application across machinery and equipment
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
This 4-40 UNC set screw delivers critical engineering solutions for industrial applications where vibration resistance and permanent positioning are paramount. The zinc plated alloy steel construction provides essential corrosion protection in harsh operating environments, while the Rockwell C45 hardness ensures the fastener maintains its structural integrity under constant stress. The hex drive design enables high-torque installation in confined spaces, and the cup tip creates deep indentation in shafts and collars for permanent component fixation. These headless set screws are engineered to prevent accidental disengagement in machinery, automotive assemblies, and precision equipment where reliability cannot be compromised.
Specification Summary & Compliance
This set screw features precision 4-40 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufacturing complies with ASME B18.3 specifications where applicable under ASTM F912. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant for environmental safety standards, containing no restricted substances above threshold limits as of the latest SVHC update.
