S-90420A518 Length 2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and galvanic-barrier coating for extended service life in harsh environments
• Self-drilling capability with No. 2 drill tip eliminates pre-drilling, saving time and labor costs in steel and sheet metal applications
• Excellent thread-forming performance through BSD tapping design creates strong, permanent threads in materials up to 0.155" thickness
• Enhanced installation efficiency with external hex drive and flanged design for secure fastening and reduced assembly time
• Maximum material engagement through fully threaded design ensures superior holding power and vibration resistance
• Wide application compatibility specifically engineered for steel, stainless steel, and sheet metal fabrication projects
• Reliable drilling performance with 5/16" drill tip length capable of penetrating maximum 0.155" material thickness

Professional Applications & Engineering Value

These galvanic-barrier coated stainless steel tapping screws solve critical challenges in metal fabrication and construction. The combination of 18-8 stainless steel material and specialized coating provides exceptional protection against galvanic corrosion when joining dissimilar metals. The thread forming design with BSD configuration creates precise, strong threads without chip formation, while the integrated No. 2 drill tip eliminates separate drilling operations in steel, stainless steel, and sheet metal up to 0.155" thickness. The flanged head with external hex drive ensures secure installation and distributes clamping force effectively, making these tapping screws ideal for HVAC systems, metal building construction, industrial equipment assembly, and automotive applications where vibration resistance and corrosion protection are paramount.

Specification Summary & Compliance

This 1/4"-14 x 2" flanged tapping screw features precision Class 2A thread tolerances with 14 threads per inch and fully threaded shank. Manufactured to BSD tapping screw standards with right-hand thread direction and round shank cross-section. The product complies with industry standards for thread forming screws and meets relevant material specifications for 18-8 stainless steel fasteners. The galvanic-barrier coating provides additional corrosion protection while maintaining compatibility with RoHS and REACH environmental requirements for industrial applications.