S-91735A289 3-48 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 316 stainless steel construction, ideal for harsh chemical and marine environments
- Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing performance
- Enhanced durability and longevity through passivated surface finish, reducing wear and preventing galling
- Precise and secure fastening with Class 2A thread fit and coarse UNC threading, ensuring consistent engagement and vibration resistance
- Efficient installation and removal using the No. 1 Phillips drive, reducing tool slippage and assembly time
- Full threading along the 1/4" length provides maximum grip and uniform stress distribution in connected materials
- Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory adherence
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 316 stainless steel rounded head screws deliver outstanding performance in corrosive or high-moisture applications such as chemical processing equipment, marine hardware, and food-grade machinery. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, preventing rust and contamination in sensitive environments. With a coarse UNC thread and Class 2A fit, these screws provide reliable fastening in softer materials or where vibration is a concern, reducing the risk of loosening over time. The pan head design and Phillips drive facilitate quick installation while maintaining a low-profile appearance, making them a versatile choice for assemblies requiring both strength and aesthetic consistency.
Specification Summary & Compliance
This screw features a 3-48 UNC coarse thread with Class 2A dimensional tolerance for consistent fit. It is manufactured in compliance with ASME B18.6.3 specifications and is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations. The fully threaded 1/4" length and precise head dimensions (0.193" diameter, 0.071" height) guarantee reliable performance in standardized applications.
