S-97181A125 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws
Stainless Steel Pan Head Combination Phillips/Slotted 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 in harsh environments thanks to 316 stainless steel construction and passivated finish
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for heavy-duty applications
- Reliable thread engagement with Class 2A thread fit and coarse UNC threading ensuring secure fastening
- Versatile installation options through combined Phillips/Slotted drive for flexible tool compatibility
- Full-length threading provides consistent holding power across the entire 1/2" length
- Standardized dimensions with ASME B18.6.3 compliance ensuring interchangeability and proper fit
- Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
These 316 stainless steel rounded head screws deliver exceptional performance in demanding industrial environments where corrosion resistance and mechanical reliability are critical. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these fully threaded screws ideal for chemical processing, marine applications, and food processing equipment where exposure to moisture and aggressive substances is common. The combination of 1/4"-20 UNC coarse threading and Class 2A thread fit ensures rapid installation and secure fastening in various materials, while the pan head design with Phillips/Slotted drive offers installation flexibility for maintenance and assembly operations. These screws provide engineering solutions where both corrosion resistance and high tensile strength are required for long-term reliability.
Specification Summary & Compliance
This 1/4"-20 UNC screw features precise Class 2A thread fit with coarse thread spacing and full threading along the 1/2" length. Manufactured to ASME B18.6.3 specifications with dimensional accuracy including 0.492" head diameter and standard pan head profile. The screws are compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions and chemical safety.
