S-92327A112 1/4"-20 x 4" 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
- Exceptional corrosion resistance with zinc yellow-chromate plating for long-lasting performance in harsh environments
- High tensile strength of 120,000 psi ensures reliable fastening in demanding industrial applications
- Rockwell C25 hardness provides excellent durability and resistance to wear and deformation
- Fully threaded design offers maximum grip and holding power along the entire 4" length
- External square drive head allows for secure tool engagement and high-torque installation
- UNC coarse threading with Class 3A fit enables quick assembly and superior thread engagement
- SAE Grade 5 certification guarantees consistent quality and performance standards
Professional Applications & Engineering Value
These SAE Grade 5 square head screws are engineered for heavy-duty industrial applications where reliability is critical. The zinc yellow-chromate plated steel construction provides superior corrosion protection, making them ideal for outdoor equipment, machinery assembly, and structural applications exposed to moisture and harsh conditions. The 1/4"-20 UNC coarse thread design ensures rapid installation and secure fastening in various materials, while the external square drive prevents cam-out during high-torque applications. With 120,000 psi tensile strength and Rockwell C25 hardness, these fully threaded fasteners maintain integrity under extreme loads, vibration, and stress, reducing maintenance needs and downtime in industrial operations.
Specification Summary & Compliance
This square head screw features precise Unified Standard Class 3A thread fit with 1/4"-20 UNC coarse threading and right-hand thread direction. Manufactured to meet ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and performance consistency. The fastener maintains SAE Grade 5 strength classification with verified mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness. Compliant with industry standards for industrial fasteners and suitable for applications requiring reliable, high-strength threaded connections.
