S-98164A538 3/8"-24 x 1 1/4" 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 industrial environments.
- Precise thread engagement with Class 3A fit and UNF fine threading, ensuring reliable, vibration-resistant connections.
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for durable, long-lasting performance.
- Easy installation and removal with a hex drive (7/32") and rounded button head design, reducing tool slippage and assembly time.
- Full thread coverage along the 1 1/4" length, providing consistent clamping force and versatility in various material thicknesses.
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability in professional applications.
- Environmental and safety adherence with RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.
Professional Applications & Engineering Value
This 3/8"-24 UNF rounded head hex screw in 316 stainless steel is engineered to address critical challenges in demanding sectors like chemical processing, marine, and food equipment. The passivated finish enhances its resistance to corrosive agents, while the fine UNF threading and Class 3A fit minimize loosening under vibration, ensuring secure fastening in precision assemblies. With a tensile strength of 70,000 psi, it withstands high-stress conditions without failure, making it ideal for industrial fasteners in machinery, valves, and structural components where reliability and longevity are paramount.
Specification Summary & Compliance
This screw adheres to inch system measurements with precise dimensions: thread size 3/8"-24, head diameter 0.656", and length 1 1/4". It meets ASME B18.3 specifications for consistent manufacturing and Class 3A thread fit for tight tolerances. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it ensures environmental safety and regulatory adherence in global supply chains.
