S-91802A575 1/4"-20 x 5" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws
Stainless Steel Phillips Oval Head 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 passivated 18-8 stainless steel construction for extended service life in harsh environments
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B80 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit with UNC coarse threads enables quick assembly and secure fastening in various materials
- Partially threaded design allows for precise clamping force control and reduced material stress
- Phillips No. 3 drive offers efficient torque transfer and compatibility with standard industrial tools
- Full compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 1/4"-20 x 5" oval head screw delivers exceptional engineering value for industrial applications where corrosion resistance and structural integrity are critical. The passivated 18-8 stainless steel material provides superior protection against rust and chemical exposure, making it ideal for marine equipment, food processing machinery, and outdoor structures. The UNC coarse threads with Class 2A fit ensure rapid installation in wood, metal, and composite materials while maintaining vibration resistance. The oval head profile with 82° countersink angle creates a flush surface finish that eliminates snagging hazards in conveyor systems, electrical enclosures, and assembly lines. With partial threading and 5-inch length, this fastener provides optimal grip range for thick materials while preventing thread damage during repeated disassembly.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance, this oval head screw features 1/4"-20 UNC coarse threads and right-hand threading. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Dimensional accuracy is maintained with 0.25" thread diameter, 1 1/2" minimum thread length, and 0.477" head diameter for consistent performance in standardized applications.
