S-91802A577 1/4"-20 x 6" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for heavy-duty applications
• Reliable fastening performance through UNC coarse threads and Class 2A fit ensuring secure connections
• Easy installation and removal with Phillips No. 3 drive design reducing tool slippage
• Optimized load distribution thanks to oval head profile with 82° countersink angle
• Partial threading design provides enhanced grip in specific engagement zones
• Full regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 1/4"-20 x 6" oval head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against rust and chemical degradation in demanding environments such as marine equipment, food processing machinery, and outdoor structures. The UNC coarse threads and Class 2A fit ensure rapid installation and reliable performance in vibration-prone applications, while the Phillips No. 3 drive offers superior torque transmission. The oval head profile with standard countersinking creates a flush finish that eliminates snagging hazards in industrial assemblies. With 80,000 psi tensile strength, this partially threaded fastener maintains clamping force under extreme loads, making it ideal for structural frameworks, heavy machinery, and equipment requiring long-term durability.

Specification Summary & Compliance

This oval head screw features precision 1/4"-20 UNC coarse threads with Class 2A tolerance for consistent fit and performance. The fastener maintains dimensional accuracy per ASME B18.6.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Manufacturing standards ensure proper thread spacing, head diameter (0.477"), and countersink angle (82°) for reliable industrial application across various sectors.