S-91268A882 3/4"-10 x 8" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 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 150,000 psi tensile strength for reliable performance in high-stress industrial environments
- Superior corrosion resistance and durability through Grade 8 steel construction with Rockwell C33 hardness rating
- Secure fastening with precise thread engagement thanks to Class 2A thread fit and UNC coarse threading
- Optimized torque transmission through external hex drive design with 1 1/8" head width
- Versatile partial threading design allowing for both clamping and alignment functions in various applications
- Reduced installation time with coarse 3/4"-10 thread spacing for quicker assembly
- Long-term reliability assurance through compliance with ASME B18.2.1 and SAE J429 standards
Professional Applications & Engineering Value
This Grade 8 steel hex head screw delivers critical engineering solutions for heavy machinery, structural steel connections, and industrial equipment assembly. The 150,000 psi tensile strength and Rockwell C33 hardness provide exceptional resistance to vibration loosening and structural fatigue, addressing common failure points in demanding applications. The 3/4"-10 UNC coarse thread configuration ensures rapid installation while maintaining secure fastening in steel-to-steel connections. The partially threaded design offers versatility for applications requiring both clamping force and alignment precision. With its external hex drive and substantial 1 1/8" head width, this fastener enables high-torque installation without stripping, making it ideal for construction, manufacturing, and heavy equipment maintenance where reliability is paramount.
Specification Summary & Compliance
This 8-inch hex head screw features precise Class 2A thread fit with 3/4"-10 UNC coarse threading and minimum 2-inch thread length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions and chemical safety.
