S-94059A551 Length 3" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Efficient self-drilling installation with No. 3 drill tip that eliminates pre-drilling and penetrates up to 0.21" thick steel/sheet metal
• Reliable sealing performance through integrated steel/rubber washer that prevents moisture ingress and vibration loosening
• High torque transmission capability with external hex drive design ensuring secure fastening without stripping
• Permanent thread formation using BSD thread-forming technology that creates strong, vibration-resistant connections in ductile materials
• Full-length threading provides maximum grip and load distribution across the entire 3" fastening length
• Versatile application compatibility with 5/8" OD flat washer suitable for various steel and sheet metal thicknesses

Professional Applications & Engineering Value

These zinc-plated steel tapping screws with BSD thread-forming technology solve critical fastening challenges in metal fabrication and assembly operations. The integrated steel/rubber sealing washer provides dual functionality - maintaining compression while creating environmental seals against moisture and dust infiltration. The No. 3 drill tip enables direct penetration into steel and sheet metal up to 0.21" thickness, eliminating separate drilling operations and reducing installation time by up to 50%. The external hex drive accommodates high-torque applications common in structural steel work, HVAC systems, and electrical enclosure assembly, while the thread-forming design creates permanent, vibration-resistant threads without chip removal issues.

Specification Summary & Compliance

Manufactured to inch system standards with 1/4"-14 thread specification and Class 2A thread tolerances. Features fully threaded right-hand configuration with 3/8" hex head and 0.341" head height. The BSD thread-forming tapping method complies with industrial fastening standards for metal applications. Components meet RoHS and REACH environmental compliance requirements, with zinc-plated steel construction providing corrosion protection suitable for industrial environments.