S-90420A350 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic-barrier coated 18-8 stainless steel construction for extended service life in harsh environments
• Integrated drilling tip eliminates pre-drilling, saving installation time and labor costs in steel and sheet metal applications
• Flanged hex head design provides superior clamping force and eliminates the need for separate washers
• Thread forming BSD tapping method creates strong, secure threads in parent material for vibration-resistant fastening
• High drilling capacity penetrates up to 0.098" thick materials without pilot holes
• External hex drive allows for high torque application with standard tools
• Full threading ensures maximum grip length and holding power throughout the fastener

Professional Applications & Engineering Value

These No. 8-18 flanged hex head tapping screws are engineered to solve critical fastening challenges in steel, stainless steel, and sheet metal applications. The combination of galvanic-barrier coated 18-8 stainless steel and integrated drilling tip addresses two major industrial pain points: corrosion-induced failure and time-consuming installation processes. The thread forming BSD design creates permanent, high-strength threads in base materials without chip formation, making them ideal for vibration-prone environments. The flanged head distributes clamping force evenly, preventing material distortion while providing superior pull-out resistance. These features make them particularly valuable in HVAC systems, electrical enclosures, and metal fabrication where durability and installation efficiency are paramount.

Specification Summary & Compliance

This No. 8-18 x 3/4" flanged hex head tapping screw features precise 0.164" thread diameter with 18 threads per inch in right-hand thread direction. Manufactured to BSD standards for thread forming applications, the screw achieves 0.098" maximum drilling thickness capability with its No. 2 drill tip. 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.