S-95345A489 6-32 x 1 1/4" 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, preventing loosening in dynamic industrial environments
• Excellent corrosion resistance through 18-8 stainless steel construction and passivated finish for extended service life
• High-strength performance with 70,000 psi tensile strength, ensuring reliable fastening in demanding applications
• Quick installation and removal with Phillips No. 2 drive and coarse UNC threads for efficient assembly operations
• Secure locking action from the 410 stainless steel washer that maintains clamping force under vibration
• Precise thread engagement with Class 2A thread fit for consistent performance and easy assembly
• Full thread coverage along the entire 1-1/4" length for maximum grip and load distribution

Professional Applications & Engineering Value

These rounded head Phillips screws with external-tooth lock washers provide critical vibration-resistant fastening solutions for industrial machinery, electronic enclosures, and automotive assemblies. The combination of 18-8 stainless steel material and passivated finish ensures exceptional corrosion resistance in harsh environments, while the coarse UNC threads enable rapid installation without cross-threading concerns. The integrated external-tooth lock washer bites into both the screw head and mating surface, creating a permanent locking action that maintains clamp load despite constant vibration or thermal cycling. This engineered solution eliminates the need for separate washers and thread-locking compounds, streamlining assembly processes while providing reliable, maintenance-free performance in critical applications where vibration-induced loosening could compromise system integrity.

Specification Summary & Compliance

This fastener features Class 2A thread fit with UNC coarse threads (6-32 size) and full threading along the 1-1/4" length. Manufactured to ASME B18.13 specifications, the screw assembly combines an 18-8 stainless steel pan head screw with Phillips No. 2 drive and a 410 stainless steel external-tooth lock washer, both featuring passivated finish. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.