S-95345A607 1/4"-20 x 7/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with integrated external-tooth lock washer that maintains secure fastening in high-motion environments
• Excellent corrosion protection through 18-8 stainless steel construction and passivated finish for extended service life in harsh conditions
• High tensile strength of 70,000 psi ensures reliable performance under substantial mechanical loads
• Quick installation and removal with Phillips No. 3 drive design that provides efficient torque transfer
• Precise thread engagement with UNC coarse threads and Class 2A fit for consistent, reliable fastening
• Full threading along the 7/8" length allows for maximum grip and adjustment flexibility
• Regulatory compliance assurance meeting ASME B18.13 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 18-8 stainless steel pan head screws with external-tooth lock washers deliver exceptional engineering value in demanding industrial environments. The combination of corrosion-resistant material and passivated finish provides critical protection against chemical exposure and moisture, significantly extending component lifespan in manufacturing equipment, outdoor machinery, and marine applications. The UNC coarse threads with Class 2A fit ensure rapid installation while maintaining precise tolerance control, reducing assembly time without compromising joint integrity. The integrated 410 stainless steel lock washer with external teeth creates permanent bite into mating surfaces, effectively solving vibration-induced loosening problems in machinery, automotive assemblies, and electrical enclosures where constant motion threatens fastener security.

Specification Summary & Compliance

This 1/4"-20 x 7/8" fully threaded screw features UNC coarse threads with Class 2A dimensional accuracy for consistent fit and performance. Manufactured to ASME B18.13 specifications with complete compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The assembly includes a matching external-tooth lock washer manufactured from 410 stainless steel with passivated finish, ensuring uniform corrosion protection throughout the fastener system.