S-90909A214 1/2"-13 x 1" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, heavy-duty fastening
• Precise, secure thread engagement with Class 3A fit and UNC coarse threading, reducing cross-threading risks
• Easy installation and removal using a standard 5/16" hex drive, compatible with common tools
• Enhanced load distribution from the integrated flange, minimizing surface damage and improving joint integrity
• Full thread coverage along the 1" length for maximum grip and adjustability in various material thicknesses
• Compliance with strict environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use

Professional Applications & Engineering Value

This 316 stainless steel flanged button head screw is engineered to address critical challenges in demanding applications such as marine equipment, chemical processing, and outdoor machinery. Its passivated finish significantly enhances corrosion resistance, preventing premature failure in moist or chemically aggressive settings. The 1/2"-13 UNC coarse thread and Class 3A fit ensure rapid assembly with high precision, reducing installation time while maintaining secure, vibration-resistant connections. The integrated flange eliminates the need for separate washers, distributing clamp load evenly to protect soft materials and reduce stress concentration. With a hex drive design, it allows for high-torque application, making it a reliable choice for structural assemblies, heavy-duty frames, and equipment requiring frequent maintenance.

Specification Summary & Compliance

This screw adheres to inch system dimensions with a 1/2"-13 UNC coarse thread and Class 3A thread fit for precise tolerance. It is fully threaded with a length of 1" and features a flanged button head with a 1.156" diameter. Manufactured from 316 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory adherence for industrial use.