S-91790A537 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Slotted Oval Head Screws
Stainless Steel Slotted Oval Head 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable, long-lasting fastening
- Optimized installation efficiency featuring UNC coarse threading and Class 2A fit for quick, secure assembly
- Enhanced flush mounting capability with standard oval head profile and 82° countersink angle for smooth surface finishes
- Full-thread engagement along the entire 1/2" length for maximum grip and load distribution
- Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability
- Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable usage
Professional Applications & Engineering Value
This 1/4"-20 UNC fully threaded screw delivers critical performance in demanding applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel material combined with passivated finish provides excellent protection against rust and chemical exposure in marine, food processing, and outdoor equipment. The oval head design with 82° countersink ensures flush mounting without protrusion, preventing snagging and maintaining aesthetic surfaces in machinery panels and assemblies. With 80,000 psi tensile strength and coarse threading, it maintains secure fastening under vibration and dynamic loads, making it ideal for industrial machinery, transportation equipment, and structural frameworks where reliability cannot be compromised.
Specification Summary & Compliance
This flat head screw features precision Class 2A thread fit with 1/4"-20 UNC coarse threads and full threading along the 1/2" length. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across various industrial sectors.
