S-93082A640 1/4"-20 x 1 1/4" Phillips Thread-Locking Flat Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locking that maintains secure fastening in dynamic environments.
• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh or outdoor applications.
• High tensile strength of 80,000 psi ensures reliable load-bearing capacity and durability under stress.
• Wide temperature tolerance from -70° to 250°F, allowing consistent performance in extreme thermal conditions.
• Easy installation and flush mounting with standard flat head profile and Phillips No. 3 drive for efficient assembly.
• Precise thread engagement with UNC coarse threads and Class 2A fit, reducing cross-threading risks and improving alignment.
• Full threading along the 1-1/4" length provides maximum grip and adjustability in various material thicknesses.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 1/4"-20 flat head screws combine 18-8 stainless steel and a passivated finish to resist rust and chemical exposure, making them ideal for machinery, automotive, and outdoor equipment. The nylon patch locking feature prevents loosening from vibrations, a common issue in moving assemblies, while the UNC coarse threads and Class 2A fit ensure quick, accurate installation with standard tools. Fully threaded and with an 82° countersink angle, they offer a secure, flush fit in pre-drilled holes, enhancing both structural integrity and aesthetic finish in professional applications.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, and is manufactured from 18-8 stainless steel with a passivated finish. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.