S-91236A546 1/4"-20 x 1 1/2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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 zinc plating, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable load-bearing capacity for structural and heavy-duty applications
- Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
- UNC coarse threading enables faster installation and reduced cross-threading risk in assembly operations
- External hex drive design allows for high-torque application with standard tools, improving installation efficiency
- Partial threading offers optimal grip length control for precise clamping in varied material thicknesses
- Compliance with major industrial standards including ASME B18.2.1 and ASTM A307 ensures consistent quality and performance
Professional Applications & Engineering Value
This 1/4"-20 hex head screw delivers exceptional engineering value through its steel construction and zinc plating, specifically designed to address common industrial challenges. The combination of 60,000 psi tensile strength and Rockwell B69 hardness provides reliable performance in structural applications, machinery assembly, and equipment manufacturing where vibration resistance and long-term integrity are critical. The UNC coarse thread configuration ensures secure fastening in various materials while minimizing installation time. The external hex drive facilitates high-torque applications without stripping, making it ideal for maintenance operations and production lines. These industrial hex screws are engineered to withstand demanding conditions while maintaining consistent performance across automotive, construction, and manufacturing sectors.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 1/4"-20 UNC coarse threading and 1-1/2" length with 3/4" minimum thread length. Manufactured to ASME B18.2.1 specifications and ASTM A307 standards, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use.
