S-90420A620 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic-barrier coated 18-8 stainless steel construction, ideal for harsh industrial environments
• Efficient self-drilling capability with No. 3 drill tip that eliminates pre-drilling and penetrates up to 0.21" thick steel and stainless steel
• Enhanced driving stability through external hex drive design providing secure tool engagement and reduced cam-out
• Reliable thread forming performance with BSD thread design that creates strong, vibration-resistant threads in sheet metal
• Improved load distribution thanks to the integrated flange design that eliminates the need for separate washers
• Full-length threading ensures maximum grip strength and consistent fastening along the entire screw length
• Wide material compatibility specifically engineered for steel, stainless steel, and sheet metal applications

Professional Applications & Engineering Value

This 1/4"-14 hex head flanged tapping screw delivers exceptional value in industrial fastening applications where corrosion resistance and installation efficiency are critical. The galvanic-barrier coated 18-8 stainless steel construction prevents galvanic corrosion when joining dissimilar metals, while the thread forming BSD design creates permanent, high-strength threads without chip formation. The integrated No. 3 drill tip eliminates secondary drilling operations, significantly reducing assembly time in sheet metal fabrication, HVAC systems, and structural steel applications. The flanged hex head provides superior clamping force distribution, making it ideal for vibration-prone environments where fastener integrity is paramount for long-term structural reliability.

Specification Summary & Compliance

This thread forming tapping screw features precision 1/4"-14 right-hand threads with full threading along the 1" length. Manufactured to BSD standards with external hex drive (3/8" head width) and 0.52" flange diameter for optimal load distribution. The screw maintains dimensional accuracy consistent with industrial fastening requirements and is manufactured using 18-8 stainless steel with galvanic-barrier coating for enhanced corrosion protection. Complies with industry standards for metal fasteners and is suitable for various industrial applications requiring reliable performance in challenging environments.