S-92949A900 3-48 x 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and extending service life.
• Exceptional mechanical strength with a 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress.
• Enhanced durability and chemical resistance provided by the passivated finish, protecting against wear and oxidation.
• Secure and efficient installation with the 1/16" hex drive, allowing for high torque application and reducing the risk of stripping.
• Precise and reliable thread engagement due to the Class 3A UNC coarse thread fit, ensuring vibration resistance and a tight seal.
• Low-profile, rounded button head design for a finished appearance and reduced risk of snagging in assembled applications.
• Full compliance with industry standards including ASME B18.3, guaranteeing dimensional accuracy and interchangeability.

Professional Applications & Engineering Value

This 3-48 UNC thread rounded head screw is engineered to solve critical challenges in precision assembly and demanding industrial environments. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a top choice for applications in electronics, aerospace, marine hardware, and medical devices where environmental factors are a concern. The combination of a Class 3A thread fit and coarse UNC threading ensures fast assembly and superior vibration resistance, preventing loosening in dynamic systems. The passivated finish further enhances the surface's integrity against chemical exposure. The low-profile button head with a hex drive is ideal for spaces where a flush or smooth surface is required without compromising on the torque needed for a secure fastening. This screw delivers reliable high tensile strength and long-term performance, reducing maintenance needs and downtime.

Specification Summary & Compliance

This product adheres to strict dimensional and performance standards, including the ASME B18.3 specification. The UNC coarse thread is manufactured to a precision Class 3A fit for superior thread engagement. It 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 use in various global markets.