S-98164A534 3/8"-16 x 1 1/8" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Precision Class 3A thread fit provides secure, accurate mating with nuts and tapped holes, reducing assembly issues
- Hex drive (7/32") design allows for easy installation and high torque application with standard tools
- Rounded button head profile offers a low-profile, smooth finish that minimizes snagging and improves safety
- Full threading along 1 1/8" length enables versatile fastening depth and consistent grip across materials
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards are met
Professional Applications & Engineering Value
Engineered for demanding settings, this 3/8"-16 UNC rounded head socket cap screw in 316 stainless steel addresses critical industrial challenges. Its passivated finish enhances durability against corrosive agents, making it suitable for chemical processing, marine equipment, and food-grade applications. The coarse UNC threads and Class 3A fit ensure quick, reliable assembly with minimal cross-threading risks, while the hex drive and button head design facilitate access in confined spaces. With a tensile strength of 70,000 psi and Rockwell B55 hardness, it withstands high-stress conditions, reducing maintenance and replacement costs in machinery, structural frameworks, and heavy-duty fastening systems.
Specification Summary & Compliance
This screw adheres to Class 3A thread tolerances per UNC standards, with a diameter of 0.375" and coarse spacing. It meets ASME B18.3 specifications for dimensional accuracy and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial uses.
