S-92949A441 1/4"-32 x 1" Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional thread engagement and vibration resistance due to UNEF extra fine threading with Class 3A fit
• High-strength performance with a tensile strength of 70,000 psi for demanding applications
• Enhanced durability and wear resistance provided by Rockwell B55 hardness
• Secure and efficient installation using a standard 5/32" hex drive for reliable torque transfer
• Full-length threading ensures maximum grip and holding power along the entire 1" length
• Compliance with strict environmental regulations, including RoHS 3 and REACH, for safe and responsible use

Professional Applications & Engineering Value

This 18-8 stainless steel rounded head screw is engineered to address critical challenges in precision assembly and high-vibration environments. Its 1/4"-32 UNEF extra fine thread and Class 3A fit provide superior thread engagement, minimizing the risk of loosening under dynamic loads—a common issue in machinery, electronics, and automotive components. The fully threaded design and hex drive facilitate quick, secure installation in tight spaces, while the rounded button head offers a low-profile finish that reduces snagging. Made from corrosion-resistant 18-8 stainless steel, it ensures long-term reliability in humid or corrosive settings, making it a trusted choice for OEMs and maintenance teams seeking durability and precision.

Specification Summary & Compliance

This screw adheres to UNEF thread standards with a Class 3A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured to deliver consistent performance with a tensile strength of 70,000 psi and hardness of Rockwell B55, it is suitable for applications requiring high strength and fine thread precision.