S-91735A868 5/16"-18 x 2 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh marine and chemical environments
- High tensile strength of 80,000 psi with Rockwell B85 hardness for reliable load-bearing performance
- Passivated finish enhances surface durability and provides additional protection against oxidation
- Class 2A thread fit ensures smooth assembly and consistent fastening in industrial applications
- Fully threaded 2½" length with coarse UNC threading delivers maximum grip and holding power
- No. 4 Phillips drive with rounded pan head design enables secure installation and clean appearance
- Full regulatory compliance with ASME B18.6.3, RoHS 3, and REACH for global industrial acceptance
Professional Applications & Engineering Value
This 316 stainless steel rounded head screw addresses critical challenges in demanding environments where corrosion resistance and mechanical strength are paramount. The combination of marine-grade 316 stainless steel and passivated finish provides superior protection against saltwater, chemicals, and atmospheric corrosion, making it ideal for offshore platforms, marine equipment, and chemical processing facilities. The coarse UNC threading and Class 2A fit ensure rapid installation and reliable performance in vibration-prone applications, while the fully threaded design maximizes engagement in various material thicknesses. The rounded pan head with Phillips drive offers both aesthetic appeal and practical installation efficiency, particularly in assembly lines where speed and consistency are critical.
Specification Summary & Compliance
This 5/16-18 UNC screw features precise Class 2A thread fit tolerance and coarse thread spacing meeting ASME B18.6.3 manufacturing specifications. The 2½" fully threaded design maintains dimensional accuracy throughout the fastener length. Compliance includes ASME B18.6.3 standards for dimensional and mechanical requirements, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) regulations for chemical safety and environmental protection.
