S-91247A857 3/4"-10 x 5 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 load-bearing capacity with 120,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening and vibration resistance
- Enhanced durability from Rockwell C25 hardness providing excellent wear resistance and structural integrity
- Industry-standard compliance with ASME B18.2.1 specifications guaranteeing consistent quality and interchangeability
- Efficient installation with external hex drive and 1 1/8" head width for high-torque applications
- Environmental responsibility through RoHS 3 and REACH compliance for safe industrial use
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where high tensile strength and reliable fastening are paramount. The partially threaded design concentrates strength where needed most while the coarse UNC thread provides superior resistance to vibration loosening. The zinc plated finish creates a protective barrier against corrosion in demanding environments, while the external hex drive enables high-torque installation with standard tools. Manufactured to ASME B18.2.1 standards, these industrial hex head fasteners ensure precise dimensional consistency and reliable performance in critical applications across construction, manufacturing, and heavy equipment sectors.
Specification Summary & Compliance
This fastener features Class 2A thread fit for standard industrial applications with 3/4"-10 UNC coarse thread specifications. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 5 standards, ensuring dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant for environmental safety and regulatory acceptance in global markets.
