S-91306A601 5/16"-18 x 3/8" 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
- Superior corrosion resistance with zinc-plated alloy steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 120,000 psi tensile strength and Rockwell C39 hardness for reliable, heavy-duty fastening
- Precise thread engagement with Class 3A UNC coarse threads ensuring secure, vibration-resistant connections
- Easy installation and removal using a standard 3/16" hex drive for efficient assembly and maintenance
- Full-threaded design provides maximum grip and load distribution along the entire 3/8" length
- Compliant with major industry standards including ASME B18.3 and ASTM F835 for guaranteed quality and performance
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for sustainable procurement
Professional Applications & Engineering Value
These zinc-plated alloy steel rounded head screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of Class 3A UNC coarse threads and fully threaded design ensures maximum thread engagement and vibration resistance in machinery, equipment assembly, and structural frameworks. The hex drive configuration allows for high-torque installation without slippage, while the rounded button head profile provides a finished appearance with reduced snagging hazards. Engineered to withstand extreme mechanical stresses with 120,000 psi tensile strength, these screws are ideal for automotive, manufacturing, and heavy equipment applications requiring durable fastening solutions that maintain integrity under continuous load and environmental exposure.
Specification Summary & Compliance
This 5/16"-18 x 3/8" rounded head screw features precision Class 3A thread fit with UNC coarse thread spacing, manufactured to exacting ASME B18.3 and ASTM F835 specifications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international safety and sustainability standards for industrial components.
