S-91735A618 1/4"-28 x 2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction and passivated finish
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable, long-lasting fastening
• Precise, secure threading with Class 2A fit and UNF fine thread profile to prevent loosening under vibration
• Optimized drive engagement featuring a No. 3 Phillips drive and pan head design for efficient installation and torque transfer
• Full 2-inch threading provides maximum grip length and uniform load distribution across the entire fastener
• Compliance with major standards including ASME B18.6.3 for dimensional accuracy and RoHS/REACH for environmental safety
• Versatile right-hand thread compatible with standard UNF nuts and components for broad industrial application

Professional Applications & Engineering Value

Engineered for demanding environments, these 316 stainless steel pan head Phillips screws deliver critical performance where corrosion resistance is paramount. The combination of UNF fine threading and Class 2A thread fit ensures vibration resistance and precise alignment in machinery, marine equipment, and chemical processing applications. The passivated finish further enhances the innate corrosion resistance of 316 stainless steel, protecting against chlorides and acidic exposure. With full threading along the 2-inch length, these screws provide superior clamping force and fatigue resistance in structural assemblies, while the pan head with No. 3 Phillips drive allows for efficient installation in confined spaces. Ideal for OEM and MRO applications requiring ASME B18.6.3 compliance and environmental regulatory adherence.

Specification Summary & Compliance

This fastener maintains Class 2A thread tolerance per UNF standards with a 1/4"-28 fine thread configuration. Manufacturing and dimensional specifications conform to ASME B18.6.3. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental and substance restriction directives for industrial use.