S-95345A116 1/4"-20 x 3/4" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Vibration-resistant locking performance through integrated 410 stainless steel internal-tooth lock washer that prevents loosening under dynamic loads
• High tensile strength of 70,000 psi ensures reliable fastening in demanding applications requiring substantial clamping force
• Quick installation and secure engagement with fully threaded UNC coarse spacing and Class 2A thread fit for efficient assembly
• Optimized drive transfer with Phillips No. 3 drive style providing positive torque application during installation
• Enhanced load distribution through pan head design with standard rounded profile, reducing surface stress
• Regulatory compliance assurance meeting ASME B18.13 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 18-8 stainless steel pan head Phillips screws with integrated internal-tooth lock washers deliver exceptional engineering value in vibration-prone applications. The combination of 70,000 psi tensile strength and passivated finish provides reliable performance in industrial equipment, machinery assembly, and outdoor installations where corrosion resistance is critical. The fully threaded UNC coarse spacing ensures rapid installation while maintaining secure fastening in materials where fine threads might strip. The 410 stainless steel lock washer maintains constant tension, preventing costly downtime from fastener loosening in manufacturing equipment, transportation systems, and heavy machinery. This comprehensive solution addresses common industrial challenges of vibration-induced failure, corrosion degradation, and assembly efficiency.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread spacing (1/4"-20) for consistent performance. The assembly features a 3/4" length with fully threaded design and 0.492" pan head diameter for optimal clamping. Compliance includes ASME B18.13 specifications for mechanical fasteners, RoHS 3 (2015/863/EU) compliance for restricted substances, and REACH (EC 1907/2006) compliance ensuring environmental responsibility in industrial applications.