S-98164A317 3/8"-16 x 2 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional load-bearing capability with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under stress
• Precise, secure fastening ensured by Class 3A thread fit and UNC coarse spacing, reducing the risk of cross-threading
• Easy installation and removal with 7/32" hex drive and fully threaded design for efficient assembly in demanding applications
• Long-term durability from rounded button head profile that resists snagging and provides a clean, finished appearance
• Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for safe use in regulated sectors

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this 316 stainless steel rounded head screw delivers exceptional performance where corrosion resistance and mechanical strength are critical. The passivated finish enhances surface durability against chemicals and moisture, making it suitable for marine, chemical processing, and food industry applications. Its UNC coarse thread with Class 3A precision ensures rapid assembly and vibration resistance, reducing installation time and maintenance needs. The hex drive design provides secure torque transmission, while the fully threaded shank offers uniform clamping force across the entire length. Ideal for structural assemblies, machinery, and outdoor equipment, this screw addresses common failure points like thread stripping and environmental degradation.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC thread with Class 3A fit and coarse spacing, ensuring high precision and interchangeability. Manufacturing adheres to ASME B18.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. Additional specifications include a right-hand thread direction, 2 1/2" length, and full threading for consistent application performance.