S-94173A335 7/16"-20 x 1 1/2" 12-Point Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
• Exceptional tensile strength of 170,000 psi ensures reliable performance under heavy loads and high-stress applications
• Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks during assembly
• Enhanced torque transmission through external 12-point drive design for secure fastening in confined spaces
• Optimized load distribution with integrated flange that eliminates the need for separate washers
• Rockwell C38 hardness rating maintains structural integrity and prevents deformation under repeated use
• Fine UNF threading delivers superior vibration resistance and improved clamping force retention

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 12-point screws combine black-oxide alloy steel construction with precision UNF fine threading to solve critical fastening challenges. The external 12-point drive enables high-torque installation in confined spaces where socket access is limited, while the flanged design distributes clamping pressure evenly across surfaces. The Class 2A thread fit ensures consistent engagement in high-vibration environments common in heavy machinery, automotive assemblies, and structural frameworks. The black-oxide surface treatment provides essential corrosion protection without compromising dimensional accuracy, making these fasteners ideal for applications requiring both superior strength and environmental durability where moisture or chemical exposure is a concern.

Specification Summary & Compliance

This 7/16"-20 UNF screw features precision Class 2A thread fit per UNF standards with partial threading and fine thread spacing. Manufactured from alloy steel with black-oxide coating, it maintains dimensional accuracy with 1½" length and 0.75" flange diameter. The fastener delivers 170,000 psi tensile strength and Rockwell C38 hardness, complying with industrial standards for heavy-duty applications. Meets material and performance specifications for industrial fastening requirements.