S-91268A960 1 1/2"-6 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
- Maximum load-bearing capacity with 150,000 PSI tensile strength for critical structural applications
- Superior wear resistance from Rockwell C33 hardness for extended service life in demanding environments
- Secure fastening performance with Class 2A thread fit ensuring precise engagement and vibration resistance
- Quick installation efficiency through coarse UNC threading and external hex drive design
- Optimized strength-to-weight ratio using Grade 8 steel material for heavy-duty applications
- Reliable partial threading design providing enhanced grip where full threading isn't required
- Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The 1-1/2"-6 UNC coarse threading provides superior resistance to vibration loosening while enabling faster installation in thick materials. Manufactured from high-strength steel with Rockwell C33 hardness, this fastener maintains integrity under extreme loads and repetitive stress cycles. The partially threaded design concentrates strength where needed most, while the external hex drive and substantial 2-1/4" head width allow for high-torque installation without stripping. These industrial hex screws solve critical challenges in construction, manufacturing, and heavy equipment applications where failure is not an option.
Specification Summary & Compliance
This 6" length hex head screw features 1-1/2"-6 UNC coarse threading with Class 2A thread fit precision and 3-1/4" minimum thread length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 standards, ensuring dimensional accuracy and performance reliability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications worldwide.
