S-90275A261 10-24 x 4" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 60,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
• Zinc-plated steel construction provides excellent corrosion resistance, extending the service life of the screw in various environments.
• Fully threaded UNC coarse design allows for faster installation and superior holding power in a wide range of materials.
• Class 2A thread fit offers consistent, reliable engagement with nuts and tapped holes, ensuring ease of assembly and interchangeability.
• 82° countersink angle and flat head enable a flush finish when installed, enhancing safety and aesthetics in assembled products.
• High Rockwell B70 hardness provides excellent durability and resistance to wear, maintaining thread integrity over repeated use.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees that the screw meets rigorous industry and environmental standards for safe, global use.

Professional Applications & Engineering Value

This 10-24 4" zinc-plated steel flat head slotted screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The UNC coarse thread and fully threaded design ensure maximum grip and load distribution, making it ideal for heavy-duty assemblies in machinery, automotive, and construction sectors. The zinc plating offers a protective barrier against rust and corrosion, which is critical in harsh operating conditions. Its 82° countersink angle allows for a seamless fit in countersunk holes, reducing protrusions and improving workflow safety. By adhering to ASME B18.6.3 standards, this screw delivers consistent quality and reliability, minimizing downtime and maintenance costs in professional applications.

Specification Summary & Compliance

This product features a Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy for easy assembly. 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, confirming its suitability for use in environmentally conscious and regulated industries.