S-97654A358 5/16"-18 x 2" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable performance in demanding applications
• Class 3A thread fit provides precise, secure fastening with minimal risk of loosening
• Hex drive design allows for easy installation and high torque application without slippage
• Flanged button head distributes clamping force evenly, reducing surface damage
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence
• Coarse UNC threading enables quick assembly and strong holding power in various materials

Professional Applications & Engineering Value

This 5/16"-18 UNC rounded head screw is engineered to address critical industrial challenges, such as vibration resistance and corrosion in machinery, automotive, and construction sectors. The 18-8 stainless steel material, combined with a passivated finish, significantly enhances longevity by resisting oxidation and chemical exposure. Its hex drive and partial threading allow for efficient installation in tight spaces, while the flanged design prevents pull-through in softer materials. With a coarse thread and Class 3A fit, it ensures rapid, secure fastening, reducing assembly time and maintenance costs in high-stress environments.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a 2" length, 0.313" thread diameter, and 0.688" flange diameter. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured with a Rockwell B70 hardness and 70,000 psi tensile strength, it conforms to industrial durability requirements for reliable performance.