S-90417A122 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior thread forming capability in plastic materials prevents cracking and material stress during installation
• Black-oxide steel construction provides excellent corrosion resistance for extended service life in industrial environments
• Tri-lobe shank design creates secure, vibration-resistant threads that maintain holding power under dynamic loads
• Full threading along the 3/4" length ensures maximum engagement and pull-out resistance in plastic assemblies
• Phillips No. 1 drive system offers reliable torque transmission and prevents cam-out during installation
• Precision-engineered thread geometry (0.112" diameter, 20 TPI) delivers optimal performance with No. 37 drill bits
• Compliant with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

These TRS thread forming screws are specifically engineered for plastic assembly applications where material integrity is critical. The tri-lobe shank cross-section and thread forming tapping method displace plastic material without removing it, creating strong, permanent threads that resist loosening from vibration and thermal cycling. The black-oxide surface treatment on steel construction provides essential corrosion protection in demanding environments while maintaining consistent performance. Ideal for plastic components in automotive, electronics, and consumer products, these tapping screws eliminate the need for inserts while providing reliable, long-lasting fastening solutions that reduce assembly time and improve product durability.

Specification Summary & Compliance

These No. 4 x 3/4" TRS tapping screws feature precision thread forming with a 0.112" thread diameter and 20 threads per inch, designed for use with No. 37 drill bits (0.104" diameter). The fully threaded configuration and standard pan head with Phillips No. 1 drive ensure consistent performance across plastic assembly applications. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, these screws meet international standards for industrial fasteners used in plastic components and assemblies.