S-92949A893 1-72 x 3/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ensuring long-term durability in harsh environments.
• Precise, reliable fastening through Class 3A thread fit and UNF fine thread design, minimizing the risk of loosening under vibration.
• High tensile strength of 70,000 psi and Rockwell B55 hardness for dependable performance in high-stress applications.
• Easy installation and removal with a hex drive (0.050") and rounded button head, allowing for efficient assembly in confined spaces.
• Full threading along the 3/8" length provides maximum grip and uniform clamping force across the entire engagement area.
• Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability with other compliant components.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This 1-72 UNF fine thread rounded head screw is engineered to address critical challenges in precision assemblies, such as electronics, aerospace components, and medical devices. The 18-8 Stainless Steel material, enhanced by a passivated finish, provides exceptional resistance to oxidation and chemical exposure, extending service life in corrosive settings. The Class 3A thread fit and fine thread spacing ensure tight, secure connections that resist loosening from vibrations, a common issue in dynamic industrial environments. With a hex drive style and compact button head, it facilitates quick installation in tight spaces, reducing assembly time while maintaining high tensile strength and structural integrity. Ideal for applications demanding reliability and precision, these screws deliver consistent performance where failure is not an option.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, ensuring precise dimensions including a Class 3A thread fit for superior tolerance control. It features a UNF fine thread with a size of 1-72, a length of 3/8", and is fully threaded for optimal engagement. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from restricted hazardous substances, supporting safe and sustainable use in global markets.