S-90122A348 Length 4" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 4 drill tip that penetrates up to 0.312" thickness in aluminum and sheet metal
• Superior corrosion resistance through specialized alloy steel coating for extended service life in demanding industrial environments
• Enhanced installation efficiency with Phillips flat head design providing secure drive engagement and clean 82° countersink finish
• Optimized thread forming performance using BSD standard right-hand threads that create strong, permanent fastenings in ductile materials
• Reduced assembly time through partially threaded design that allows faster driving while maintaining maximum grip length
• Reliable material compatibility specifically engineered for aluminum and sheet metal applications without stripping or material damage
• Environmental compliance assurance meeting RoHS 3 standards for safe use in regulated industrial settings

Professional Applications & Engineering Value

These corrosion-resistant tapping screws solve critical assembly challenges in aluminum and sheet metal fabrication by combining drilling and fastening operations into a single step. The thread forming design creates precise internal threads without generating chips, eliminating cleanup while providing superior pull-out resistance. The alloy steel construction with protective coating ensures durability in environments where moisture and chemicals are concerns. Engineers specify these BSD standard screws for HVAC systems, electronic enclosures, and automotive components where the 82° countersink angle provides flush mounting and the No. 4 drill tip penetrates up to 0.312" without pilot holes, significantly reducing labor costs and improving production throughput in high-volume manufacturing operations.

Specification Summary & Compliance

These 1/4"-20 thread forming screws maintain precision Class 2A thread tolerances with 20 threads per inch and partial threading extending 2" from the tip. Manufactured to BSD tapping screw standards with right-hand thread direction and standard flat head profile. The RoHS 3 (2015/863/EU) compliance ensures environmental responsibility, while the corrosion-resistant coating on alloy steel substrate provides consistent performance across industrial applications requiring reliable fastening solutions in aluminum and sheet metal substrates up to 0.312" thickness.