S-97654A306 5/16"-18 x 1" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Superior tensile strength of 70,000 psi ensures reliable, high-load fastening without failure
• Class 3A thread fit provides precise, vibration-resistant connections for critical assemblies
• Integrated flange design eliminates the need for separate washers, speeding up installation
• Hex drive (3/16") allows for high-torque application with standard tools, reducing stripping risk
• Fully threaded coarse UNC pattern enables rapid installation and strong grip in various materials
• RoHS 3 and REACH compliance meets stringent environmental regulations for global supply chains

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these flanged hex drive screws combine 18-8 stainless steel with a passivated finish to resist chemical exposure and oxidation in machinery, enclosures, and structural frames. The wide button head profile and integrated flange distribute clamping force evenly, preventing surface damage and maintaining seal integrity under vibration. With Class 3A UNC coarse threads and full threading, they provide quick, secure fastening in sheet metal, plastics, and assemblies where disassembly is infrequent—reducing maintenance downtime and ensuring long-term reliability in right-hand threaded systems.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A fit for tight tolerance assemblies. Dimensions include a 5/16"-18 thread size, 1" length, and 0.688" flange diameter. Manufactured to deliver 70,000 psi tensile strength and Rockwell B70 hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.