S-91268A450 1 3/4"-5 x 6" ASME B18.2.1, ASTM A354BD 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 critical structural applications
- Superior wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
- Optimized thread engagement through partial threading design for enhanced vibration resistance and clamping force
- Reliable fastening performance with Class 2A thread fit ensuring consistent installation and removal
- Heavy-duty construction using Grade 8 steel meeting ASTM A354BD specifications for maximum durability
- Easy installation and maintenance with standard 2 5/8" external hex head compatible with common tools
- Industry compliance assurance with RoHS 3 and REACH environmental regulations for global applications
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions for heavy machinery, structural steel connections, and industrial equipment where high tensile strength and vibration resistance are paramount. The 1-3/4"-5 UNC coarse thread configuration provides rapid installation and superior holding power in steel-to-steel applications, while the partial threading design concentrates strength where needed most. Manufactured from ASTM A354BD steel with Rockwell C33 hardness, these fasteners withstand extreme mechanical stresses and repetitive loading cycles common in construction, mining, and manufacturing environments. The external hex drive and right-hand thread ensure compatibility with standard industrial tools, streamlining maintenance and assembly processes.
Specification Summary & Compliance
This 6" length hex head screw features Class 2A thread fit tolerance with 1-3/4"-5 UNC coarse threads and 3-3/4" minimum thread length. Manufactured to ASME B18.2.1 dimensional standards using ASTM A354BD material specifications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for international industrial markets and environmentally conscious applications.
