S-91268A871 3/4"-10 x 6" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 150,000 psi tensile strength for demanding industrial applications
- Superior durability and wear resistance thanks to Grade 8 steel construction and Rockwell C33 hardness
- Reliable fastening performance with Class 2A thread fit ensuring precise engagement and vibration resistance
- Quick installation and removal through external hex drive design and coarse UNC threading
- Optimized strength-to-weight ratio with partial threading design reducing weight while maintaining structural integrity
- Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for universal application
- Environmentally compliant manufacturing with RoHS 3 and REACH compliance for global industrial use
Professional Applications & Engineering Value
This Grade 8 steel hex head screw delivers critical performance in heavy machinery, structural steel connections, and industrial equipment assembly. The 3/4"-10 UNC coarse threading provides superior resistance to vibration loosening while enabling faster installation in thick materials. The partially threaded design concentrates strength where needed most, preventing thread damage during installation while maintaining full shank strength. With 150,000 psi tensile strength and Rockwell C33 hardness, this fastener withstands extreme loads and impact forces in construction, manufacturing, and automotive applications. The external hex drive ensures secure tool engagement under high torque requirements, making it ideal for maintenance-critical environments where reliability is paramount.
Specification Summary & Compliance
This 6" length hex head screw features precise Class 2A thread fit with 3/4"-10 UNC coarse threading and 1 3/4" minimum thread length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
