S-91251A673 7/16"-14 x 1 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 in high-stress industrial applications, reducing the risk of fastener failure.
• Black-oxide coating on alloy steel provides enhanced corrosion resistance and a durable, non-reflective finish for extended service life.
• Class 3A thread fit with UNC coarse threads delivers precise, secure fastening with minimal risk of cross-threading in demanding environments.
• 3/8" hex drive and standard socket head allows for easy installation and high torque application with common tools, improving assembly efficiency.
• Rockwell C37 hardness rating offers superior wear resistance, maintaining thread integrity and durability under repeated use.
• Fully threaded design ensures consistent grip and load distribution along the entire length, ideal for adjustable or deep-set applications.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, global use.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in industrial and mechanical assemblies, where high tensile strength and corrosion resistance are paramount. The UNC coarse threads and Class 3A fit provide reliable engagement in materials prone to vibration or thermal expansion, reducing loosening and maintenance needs. With a 170,000 psi tensile strength and Rockwell C37 hardness, it excels in heavy-duty applications such as machinery, automotive systems, and construction equipment, where durability and precision are essential. The black-oxide surface treatment not only enhances corrosion protection but also minimizes galling, making it suitable for harsh environments. Its 3/8" hex drive ensures efficient installation with standard tools, streamlining assembly processes and reducing downtime in B2B operations.

Specification Summary & Compliance

This screw features precise 7/16"-14 UNC coarse threads with a Class 3A thread fit for high accuracy and minimal tolerance. It meets ASTM A574 specifications for high-strength alloy steel fasteners, ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmentally responsible sourcing and use in global industrial markets.