S-96660A153 4-40 x 1/2" Steel Flanged Button Head Hex-Drive Screws
Steel Flanged Button Head Hex-Drive 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-plated alloy steel construction, extending service life in harsh industrial environments
- High tensile strength of 120,000 psi ensures reliable fastening under heavy loads and vibration
- Class 3A thread fit provides precise, secure engagement with consistent clamping force
- Integrated flange design eliminates the need for separate washers, simplifying installation and reducing assembly time
- Hex drive compatibility allows for high-torque application with standard tools, preventing stripping
- Fully threaded coarse UNC pattern enables rapid installation and strong holding power in various materials
- Rockwell C32 hardness maintains thread integrity and resists deformation during repeated use
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 4-40 UNC thread screws with zinc-plated alloy steel construction address critical fastening challenges. The coarse thread spacing and fully threaded design provide excellent grip in soft materials and prevent loosening under dynamic loads. With a rounded head style and integrated flange, they distribute pressure evenly, reducing surface damage and improving seal integrity. The hex drive ensures secure tool engagement for high-torque installations in confined spaces, making them ideal for machinery, automotive assemblies, and electronic enclosures where vibration resistance and durability are paramount.
Specification Summary & Compliance
This screw meets UNC thread standards with Class 3A fit for precise dimensional accuracy. Manufactured from alloy steel with zinc plating for enhanced corrosion protection. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. Thread direction is right-hand with coarse spacing, and the screw features a flanged, rounded head for consistent performance in industrial fastening systems.
