S-90628A546 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with protective coating extends service life in demanding industrial environments
• Integrated steel/rubber sealing washer creates reliable weatherproof and vibration-resistant connections
• Self-drilling tip design eliminates pre-drilling requirements, saving installation time and labor costs
• External hex drive head provides maximum torque transmission for secure fastening in high-stress applications
• Thread forming BSD design creates strong, permanent threads in steel and sheet metal without chip formation
• Full threading along entire shank length ensures consistent holding power throughout the fastened material
• RoHS 3 compliance meets international environmental standards for safe, sustainable manufacturing

Professional Applications & Engineering Value

These corrosion-resistant steel tapping screws deliver exceptional performance in steel and sheet metal applications where durability and sealing integrity are critical. The thread forming BSD design eliminates the need for separate tapping operations while creating strong, permanent threads that resist vibration loosening. The integrated steel/rubber sealing washer provides dual functionality - the steel base distributes load evenly while the rubber component creates a weather-tight seal against moisture and contaminants. With the self-drilling tip capable of penetrating up to 0.21" thickness, these external hex drive screws significantly reduce installation time in assembly line operations, HVAC systems, and metal fabrication projects where speed and reliability are paramount.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with 1/4"-14 fully threaded right-hand threads and Class 2A tolerance standards. Features a 3/8" hex head with 0.405" height for standard wrench compatibility. The BSD thread forming tapping method ensures consistent performance in steel and sheet metal substrates. Compliant with RoHS 3 (2015/863/EU) environmental regulations, containing no restricted hazardous substances. The flat washer configuration (0.563" OD) combines steel structural integrity with rubber sealing properties for comprehensive fastening solutions.