S-94967A692 1/4"-20 x 1 1/4" ASME B18.2.1, ASTM B117, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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
- Superior corrosion resistance with black protective coating, extending service life in harsh industrial environments
- High-strength Grade 5 construction delivers 120,000 psi tensile strength for demanding heavy-duty applications
- Reliable UNC coarse threading with Class 2A fit ensures secure fastening and easy installation
- External hex drive design provides excellent torque transmission and tool accessibility
- Full threading along 1 1/4" length offers maximum grip and load distribution
- Rockwell C25 hardness maintains structural integrity under high stress conditions
- Comprehensive compliance with major industry standards and environmental regulations
Professional Applications & Engineering Value
These Grade 5 hex head screws with black corrosion-resistant coating provide exceptional performance in demanding industrial settings where exposure to moisture, chemicals, and environmental stressors can compromise fastener integrity. The UNC coarse threading with Class 2A fit ensures reliable engagement in various materials while resisting vibration-induced loosening. Engineered with 120,000 psi tensile strength and Rockwell C25 hardness, these fully threaded screws maintain structural stability in heavy machinery, construction equipment, and mechanical assemblies. The external hex drive design facilitates efficient installation with standard tools, reducing assembly time while providing superior torque transmission for critical connections in automotive, manufacturing, and structural applications.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (1/4"-20), these hex head screws comply with ASME B18.2.1 dimensional specifications, ASTM B117 salt spray testing requirements, and SAE J429 mechanical properties for Grade 5 fasteners. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across global industrial markets.
