S-94173A333 7/16"-20 x 1" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength (170,000 psi) ensures reliable performance in high-stress industrial applications, reducing failure risks
• Black-oxide coating on alloy steel provides superior corrosion resistance and durability in harsh environments
• External 12-point drive and head allows for high-torque installation with standard tools, minimizing slippage and damage
• Integrated flange design distributes clamping force evenly, eliminating the need for separate washers and speeding assembly
• Class 2A fine UNF threads offer precise, vibration-resistant connections that maintain integrity under dynamic loads
• Fully threaded shank maximizes grip length and adjustability for versatile fastening across various material thicknesses
• Rockwell C38 hardness ensures long-term wear resistance, reducing replacement frequency and maintenance costs

Professional Applications & Engineering Value

Engineered for demanding environments, this 12-point screw combines black-oxide alloy steel construction with a flanged design to address common industrial challenges like vibration loosening and corrosion. The external 12-point drive facilitates secure, high-torque fastening in confined spaces, ideal for machinery, automotive assemblies, and structural frameworks. Its fine UNF threads and Class 2A fit ensure consistent clamping force, preventing leaks and misalignments in precision equipment. With a 170,000 psi tensile strength, it reliably supports heavy-duty applications, reducing downtime and enhancing operational safety in sectors such as aerospace, manufacturing, and energy infrastructure.

Specification Summary & Compliance

This screw adheres to UNF thread standards with Class 2A tolerance for precise fit, featuring a 7/16"-20 fine thread, right-hand direction, and 1" length. Manufacturing complies with industry norms for dimensional accuracy, including head width (1/2") and flange diameter (0.75"). The black-oxide finish and alloy steel material meet general industrial requirements for performance, though specific compliance like RoHS or ASME should be verified per application needs.