S-92949A890 1-64 x 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments and long-term reliability.
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
• Precision thread fit with Class 3A UNC coarse threads ensuring secure, vibration-resistant fastening.
• Easy installation and removal thanks to the hex drive design, providing excellent torque transmission.
• Fully threaded shank for maximum grip and consistent holding power along the entire 1/2" length.
• Compliance with industry standards including ASME B18.3, RoHS, and REACH for safe, regulated use.
• Versatile rounded button head offering a low-profile, aesthetically pleasing finish without sharp edges.

Professional Applications & Engineering Value

This 1-64 UNC thread rounded head screw is engineered to address critical challenges in industrial assembly, such as corrosion-induced failure and loosening under vibration. Made from 18-8 Stainless Steel with a passivated finish, it resists rust and chemical exposure, extending service life in machinery, electronics, and outdoor equipment. The Class 3A thread fit and coarse thread design provide superior clamping force and ease of alignment, reducing installation time and rework. With a hex drive for high-torque applications and a rounded button head that minimizes snagging, this screw ensures reliable performance in tight spaces and high-stress environments, supporting efficient maintenance and reduced downtime.

Specification Summary & Compliance

This fastener features a 1-64 UNC coarse thread with Class 3A fit for precise tolerance, a length of 1/2", and full threading. It complies with ASME B18.3 specifications and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.