S-91306A306 3/8"-24 x 1 1/2" ASTM F835 Steel Button Head Hex-Drive Screws
Steel 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
- Exceptional tensile strength of 120,000 psi for reliable performance in high-stress industrial applications
- Class 3A fine thread precision ensures superior fit and vibration resistance in demanding environments
- Zinc-plated alloy steel construction provides excellent corrosion resistance and durability
- Fully threaded design delivers maximum holding power across the entire fastener length
- Hex drive (7/32") with rounded button head allows for easy installation and a clean, finished appearance
- Rockwell C39 hardness rating maintains thread integrity and prevents stripping during installation
- Comprehensive compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH standards for guaranteed quality and safety
Professional Applications & Engineering Value
Engineered for high-stress applications where reliability is non-negotiable, these 3/8"-24 UNF Class 3A zinc-plated alloy steel rounded head screws deliver exceptional performance in demanding industrial environments. The fine thread configuration combined with Class 3A thread fit provides superior vibration resistance and precise engagement, making them ideal for machinery, automotive assemblies, and heavy equipment where loosening under dynamic loads is a concern. The zinc-plated surface treatment offers enhanced corrosion protection, extending service life in challenging operating conditions. The fully threaded design ensures maximum grip length and distributed stress, while the rounded button head with hex drive facilitates easy installation in confined spaces while maintaining a professional, finished appearance.
Specification Summary & Compliance
This rounded head screw features precise Class 3A thread fit with UNF fine thread specifications (3/8"-24) and maintains dimensional accuracy per ASME B18.3 standards. The fastener is manufactured in compliance with ASTM F835 specifications, ensuring consistent quality and performance. Environmental and safety compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, making these screws suitable for regulated industries and international markets.
