S-91268A422 1/2"-13 x 1" 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 mechanical strength with 150,000 PSI tensile rating for reliable performance in demanding industrial environments
- Superior hardness and durability achieved through Rockwell C33 hardness rating, resisting wear and deformation under heavy loads
- Optimized coarse UNC threading provides faster installation and superior grip in various materials compared to fine thread alternatives
- Precision Class 2A thread fit ensures consistent engagement and reduces cross-threading risks during assembly
- Full threading along the entire 1" length offers maximum adjustability and clamping force distribution
- External hex drive design enables high-torque application with standard tools for secure fastening
- Comprehensive regulatory compliance including RoHS 3 and REACH, ensuring environmental responsibility and global market acceptance
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, structural steel connections, and high-vibration equipment where failure is not an option. The steel construction combined with 150,000 PSI tensile strength addresses common industrial challenges including joint integrity maintenance under extreme loads and resistance to shock impacts. The coarse UNC thread profile provides superior holding power in both soft and hard materials, while the external hex drive accommodates high-torque applications common in construction, automotive, and manufacturing sectors. Engineered to meet ASME B18.2.1 and SAE J429 specifications, these fasteners offer predictable performance and interchangeability in critical assembly operations.
Specification Summary & Compliance
This 1/2"-13 UNC hex head screw features Class 2A thread tolerances for consistent fit and optimal performance. Manufactured to exacting ASME B18.2.1 and SAE J429 Grade 8 standards, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and regulatory acceptance for global industrial applications.
