S-98164A471 5/8"-11 x 1 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless 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 corrosion resistance in harsh environments due to 316 stainless steel construction with passivated surface treatment
- Superior thread engagement and vibration resistance achieved through Class 3A thread fit with UNC coarse threading
- High-strength performance under load with 70,000 psi tensile strength and Rockwell B55 hardness rating
- Secure installation and removal enabled by 3/8" hex drive design that prevents tool slippage
- Full-length thread coverage for maximum grip strength and consistent fastening along the entire 1½" length
- Compliant with industry standards including ASME B18.3 specifications for dimensional accuracy
- Environmentally responsible manufacturing meeting RoHS 3 and REACH compliance requirements
Professional Applications & Engineering Value
This 316 stainless steel rounded head screw delivers critical performance advantages in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threading with Class 3A fit ensures rapid installation and superior vibration resistance in applications from chemical processing equipment to marine hardware. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these hex drive screws ideal for environments exposed to moisture, chemicals, and temperature variations. The rounded button head profile provides a finished appearance while the 3/8" hex drive accommodates high torque applications without stripping, delivering long-term reliability in structural assemblies and machinery maintenance.
Specification Summary & Compliance
This fastener maintains precision Class 3A thread fit per UNC standards with 5/8"-11 coarse threading and full thread coverage along the 1½" length. Manufacturing complies with ASME B18.3 dimensional specifications, ensuring interchangeability and proper function. The screw meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, confirming adherence to hazardous substance restrictions for industrial applications worldwide.
