S-91500A537 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat 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 316 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
- High tensile strength of 70,000 psi ensures reliable fastening under demanding loads, reducing the risk of failure.
- Class 2A thread fit provides consistent, easy assembly with standard UNC coarse threads for quick installation.
- 82° countersink angle and flat head design allows for flush mounting, minimizing protrusion and improving aesthetics.
- Full threading offers maximum grip and holding power along the entire screw length for secure connections.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards are met.
- Phillips drive (No. 3 size) enables efficient torque application with common tools, speeding up assembly processes.
Professional Applications & Engineering Value
These 1/4"-20 UNC flat head screws are engineered to address common industrial challenges, such as corrosion in marine or chemical settings, thanks to the 316 Stainless Steel material and passivated finish. The coarse thread design and Class 2A fit ensure quick, reliable fastening in applications like machinery assembly, electronic enclosures, and structural frameworks, where vibration resistance and durability are critical. By combining high tensile strength and full threading, they prevent loosening and maintain integrity under stress, reducing maintenance needs and downtime. Ideal for industrial fasteners in demanding sectors, these screws offer a cost-effective solution for long-term performance and compliance with rigorous standards.
Specification Summary & Compliance
This product adheres to precise dimensional tolerances, including Class 2A thread fit and UNC coarse threads, ensuring compatibility and ease of use. It meets ASME B18.6.3 specifications for flat head screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility in industrial applications.
