S-91247A628 3/8"-16 x 1 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending the service life of the screw in harsh industrial environments.
- Grade 5 steel construction offers excellent durability and hardness (Rockwell C25), ideal for heavy-duty fastening needs.
- Coarse UNC threading with Class 2A fit allows for quick and easy installation, minimizing assembly time and labor costs.
- Partially threaded design enables precise clamping force control, preventing joint loosening in dynamic loads.
- External hex drive and hex head facilitate straightforward tightening with common tools, enhancing installation efficiency.
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, providing peace of mind for regulated projects.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding settings. The 3/8"-16 UNC coarse thread and partial threading provide secure fastening in materials like metal and wood, while the zinc plating defends against rust and wear in outdoor or humid conditions. With a tensile strength of 120,000 psi and Rockwell C25 hardness, it excels in heavy machinery, construction, and automotive assemblies where reliability is critical. By meeting ASME B18.2.1 standards, it ensures consistent quality and performance, reducing maintenance needs and downtime in professional applications.
Specification Summary & Compliance
This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, a length of 1 1/2", and partial threading. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring reliable manufacturing standards. Additionally, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for global use.
