S-91268A470 1 3/4"-5 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 load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior durability and wear resistance thanks to Grade 8 steel construction and Rockwell C33 hardness
- Optimized thread engagement with Class 2A fit UNC coarse threads ensuring secure fastening and vibration resistance
- Easy installation and removal with external hex drive and 2 5/8" head width for standard wrench compatibility
- Partial threading design provides unthreaded shank strength where maximum clamping force is required
- Full regulatory compliance with RoHS 3 and REACH environmental standards for safe industrial use
- Proven reliability meeting ASME B18.2.1 specifications and ASTM A354BD material standards
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The 1 3/4"-5 UNC coarse thread configuration combined with Class 2A thread fit ensures rapid assembly and superior vibration resistance in structural steel connections, heavy machinery, and construction equipment. The partially threaded design concentrates strength in the shank while providing optimal thread engagement. With 150,000 psi tensile strength and Rockwell C33 hardness, these steel fasteners withstand extreme loads and harsh environmental conditions, making them ideal for critical applications in manufacturing, infrastructure, and heavy equipment maintenance where reliability and safety are paramount.
Specification Summary & Compliance
This 10" length hex head screw features 1 3/4"-5 UNC coarse threads with Class 2A thread fit precision and 4" minimum thread length. Manufactured to ASME B18.2.1 specifications using ASTM A354BD material. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
