S-92949A414 3-56 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 industrial environments
• High tensile strength of 70,000 psi ensures reliable, durable fastening under heavy loads
• Precision Class 3A thread fit provides tight tolerances for secure, vibration-resistant assemblies
• Fine UNF threading offers better adjustment and holding power in delicate applications
• 1/16" hex drive allows for easy installation with standard tools, reducing assembly time
• Fully threaded design maximizes grip length and load distribution across the entire fastener
• Rockwell B55 hardness maintains thread integrity and resists wear over repeated use

Professional Applications & Engineering Value

These 3-56 UNF fine thread screws are engineered from 18-8 stainless steel with a passivated finish to combat corrosion in demanding settings like electronics, aerospace, and medical devices. The Class 3A thread fit and fully threaded construction prevent loosening from vibrations, ensuring long-term stability. With a rounded head and hex drive, they facilitate quick, tool-friendly installation while meeting strict dimensional standards. Ideal for applications requiring high-strength, precise fastening without compromising on corrosion resistance or regulatory compliance.

Specification Summary & Compliance

This product features a 3-56 UNF fine thread with Class 3A fit for exacting tolerances, a length of 1/2", and full threading. It complies with ASME B18.3 manufacturing specifications and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial use.