S-95373A146 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 from the hot-dipped galvanized finish, extending service life in harsh environments.
- High tensile strength of 60,000 psi ensures reliable load-bearing capacity and structural integrity.
- Rockwell B69 hardness provides excellent durability and resistance to wear and deformation.
- Class 2A thread fit offers consistent, reliable engagement and easier assembly in industrial settings.
- Coarse UNC threading enables faster installation and reduced cross-threading risks.
- External hex drive design allows for high-torque application with standard tools, improving installation efficiency.
- Compliance with ASME B18.2.1 and ASTM A307 guarantees consistent quality and interchangeability.
Professional Applications & Engineering Value
These hot-dipped galvanized steel hex head screws are engineered to address common industrial challenges such as corrosion-induced failure and assembly inefficiency. The zinc coating provides a robust barrier against moisture and chemicals, making them ideal for outdoor structures, marine equipment, and chemical processing facilities. With a 1/4"-20 UNC coarse thread and partial threading, they offer optimal grip in materials like steel and wood, reducing the risk of stripping. The external hex drive facilitates quick, high-torque fastening, streamlining maintenance and production workflows. By combining 60,000 psi tensile strength and standardized dimensions, these screws ensure long-term reliability in heavy-duty applications, from machinery assembly to construction frameworks.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with Class 2A fit for precise dimensional accuracy and easy assembly. It is manufactured in accordance with ASME B18.2.1 and ASTM A307 specifications, ensuring consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in global markets.
