S-91251A453 12-24 x 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments and minimizing maintenance needs.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and vibration resistance.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity and drive engagement through repeated use.
• Fully threaded design allows for maximum grip along the entire length, providing uniform clamping force and versatility in various material thicknesses.
• Standard hex socket drive (5/32") enables easy installation with common tools, reducing assembly time and improving workflow efficiency.
• Compliance with ASTM A574 ensures consistent quality and mechanical properties, meeting rigorous industry standards for socket head cap screws.

Professional Applications & Engineering Value

This 12-24 UNC thread socket head cap screw is engineered to address critical challenges in industrial fastening, where high tensile strength and corrosion resistance are paramount. The black-oxide alloy steel construction, combined with a Class 3A thread fit, provides a durable solution for machinery, automotive, and aerospace assemblies that face vibration, heavy loads, and exposure to corrosive elements. Its coarse thread design ensures quick installation and reliable holding power in brittle materials, while the fully threaded body distributes stress evenly, reducing the risk of stripping or loosening. Ideal for applications requiring precision fastening and long-term reliability, this screw minimizes downtime and maintenance costs in industrial environments.

Specification Summary & Compliance

This product features a 12-24 UNC coarse thread with a Class 3A fit for precise tolerance, ensuring secure fastening. It is manufactured in accordance with ASTM A574 specifications, guaranteeing consistent mechanical properties and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for use in various industries.