S-92210A019 1-72 x 3/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
• Exceptional thread precision and reliability due to Class 3A fit and UNF fine threading, ensuring secure, vibration-resistant connections.
• High tensile strength of 70,000 psi and Rockwell B55 hardness for dependable performance under heavy loads.
• Efficient installation and flush seating with a standard 82° countersink angle and hex drive for easy, secure fastening.
• Full threading along the 3/8" length provides maximum grip and uniform stress distribution in assemblies.
• Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability for professional use.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.

Professional Applications & Engineering Value

This 1-72 UNF flat head screw is engineered to address critical challenges in precision assemblies, such as minimizing corrosion in moist or chemical-exposed settings thanks to its 18-8 stainless steel material and passivated finish. The Class 3A thread fit and UNF fine thread design ensure tight, reliable fastening that resists loosening under vibration, making it ideal for electronics, aerospace, and machinery where accuracy is paramount. Its flat head with an 82° countersink allows for seamless, flush mounting, reducing protrusion risks while the hex drive enables quick installation with standard tools. By combining high tensile strength and full threading, it delivers uniform clamping force, enhancing durability in industrial screw applications without compromising on compliance or performance.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit for superior tolerance and UNF fine thread specifications. It meets ASME B18.3 manufacturing guidelines for consistency and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material responsibility.