S-91268A982 2"-4 1/2 x 10" ASME B18.2.1, ASTM A354BD 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 tensile strength of 150,000 psi ensures reliable performance under extreme loads and prevents fastener failure in critical applications
- Grade 8 classification and Rockwell C33 hardness provide superior resistance to wear, deformation, and shear forces in demanding industrial environments
- Partial threading design offers optimal grip and clamping force while minimizing stress concentration points
- External hex drive and hex head configuration enables high-torque installation and removal with standard tools
- Class 2A thread fit with UNC coarse spacing ensures smooth assembly and reliable engagement in various materials
- Comprehensive compliance with ASME B18.2.1, RoHS 3, and REACH standards guarantees quality and environmental responsibility
- Heavy-duty 10" length with 2" diameter provides substantial fastening capacity for large-scale structural applications
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The ASTM A354BD steel construction combined with 150,000 psi tensile strength addresses critical challenges of vibration resistance and load-bearing capacity in dynamic environments. The partially threaded design concentrates strength where needed most, while the external hex drive facilitates quick installation in confined spaces. The UNC coarse thread spacing ensures rapid assembly and superior holding power in structural steel, manufacturing equipment, and heavy construction applications where reliability is paramount.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC thread form and 2"-4½" thread size range. Complies with ASME B18.2.1 specifications and manufactured from ASTM A354BD material. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features right-hand thread direction and coarse thread spacing for optimal performance in industrial fastening applications.
