S-90279A546 1/4"-20 x 1 1/2" ASME B18.6.3 Steel Round Head Phillips Screws
Steel Round Head Phillips 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 zinc-plated steel construction, extending service life in demanding industrial environments.
- High tensile strength of 60,000 psi ensures reliable performance under significant mechanical stress and vibration.
- Excellent drive engagement with a Phillips No. 3 drive, reducing cam-out and enabling efficient installation.
- Optimized for quick assembly thanks to UNC coarse threading and Class 2A thread fit, providing smooth and secure fastening.
- Durable rounded head design offers a low-profile finish that minimizes snagging and improves safety.
- Full threading along the 1-1/2" length allows for maximum grip and adjustability in various material thicknesses.
- Compliance with major industry standards including ASME B18.6.3, ensuring dimensional accuracy and interchangeability.
Professional Applications & Engineering Value
This zinc-plated steel rounded head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The UNC coarse thread and Class 2A fit provide rapid installation and reliable holding power in materials like metal, wood, and plastic, reducing labor time. The Phillips drive ensures widespread tool compatibility, while the zinc plating offers a protective barrier against rust and oxidation in humid or outdoor settings. Ideal for machinery, electrical enclosures, and structural assemblies, this fastener delivers consistent performance where high tensile strength and regulatory compliance are critical for long-term reliability.
Specification Summary & Compliance
This screw features a 1/4"-20 thread size with UNC coarse spacing and Class 2A thread fit for standard dimensional accuracy. It is manufactured in accordance with ASME B18.6.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial applications.
