S-92327A814 1/4"-20 x 2" ASME B18.2.1, SAE J429 Square Head Screws
Square 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 yellow-chromate plating that protects against harsh industrial environments
- High tensile strength of 120,000 psi ensures reliable performance in demanding applications without failure
- Rockwell C25 hardness provides excellent durability and resistance to wear and deformation
- UNC coarse threading allows for faster installation and better performance in softer materials
- External square drive design offers secure tool engagement and reduces slipping during tightening
- Full threading along the 2" length enables consistent clamping force and versatile fastening options
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
This SAE Grade 5 square head screw is engineered for heavy-duty industrial applications where reliability is critical. The zinc yellow-chromate plated steel construction delivers exceptional corrosion resistance, making it ideal for outdoor machinery, construction equipment, and automotive assemblies exposed to moisture and chemicals. With UNC coarse threads and Class 3A thread fit, it ensures quick, secure fastening in wood, metal, and composite materials, reducing installation time and minimizing cross-threading risks. The external square drive provides superior torque transmission, preventing tool slippage in high-torque scenarios. These features make it a trusted choice for maintenance, repair, and OEM applications requiring medium strength and long-term durability under varying loads.
Specification Summary & Compliance
This fastener features a 1/4"-20 UNC coarse thread with Unified Standard Class 3A precision for consistent fit and performance. It is fully threaded over a 2" length and manufactured from steel with a zinc yellow-chromate plating finish. The screw meets ASME B18.2.1 and SAE J429 specifications, ensuring adherence to industry standards for dimensions, materials, and mechanical properties. It complies with RoHS and REACH environmental regulations, providing a safe and reliable solution for professional use.
