S-90044A152 3/8"-16 x 4 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.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in machinery and equipment.
• Hex socket drive design allows for high-torque installation with standard tools, minimizing stripping and improving efficiency.
• Fully threaded body offers consistent clamping force along the entire 4 1/2" length, ideal for thick materials and heavy-duty fastening.
• Compliance with ASTM A574 guarantees material quality and manufacturing consistency for engineering-critical uses.
• RoHS 3 and REACH compliance ensures environmental and safety standards are met, suitable for global supply chains.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges such as vibration loosening and corrosion in harsh conditions. The 3/8"-16 UNC coarse thread with Class 3A fit ensures quick assembly and reliable grip in metals and composites, while the hex drive facilitates easy installation in confined spaces. With a Rockwell C37 hardness and high tensile strength, it withstands heavy loads in machinery, automotive, and construction applications, reducing maintenance needs and downtime. The black-oxide surface treatment adds a protective layer against rust, making it a durable choice for outdoor or high-moisture environments where precision and longevity are critical.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including 3/8"-16 UNC coarse threads with a Class 3A thread fit for superior accuracy. It meets ASTM A574 specifications for material and manufacturing quality, ensuring consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmentally safe and regulated industrial use.