S-97349A439 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in humid or chemical environments
• Excellent thread-forming capability creates permanent, vibration-resistant threads in plastic materials without pre-tapping
• Optimized plastic engagement with 16 TPI thread pitch and blunt tip design prevents material cracking during installation
• Secure Phillips drive system (No. 3 size) provides reliable torque transfer and reduces cam-out during high-speed assembly
• Full threading along 3/4" length ensures maximum holding power and uniform stress distribution
• Pan head design offers low-profile fastening with good bearing surface for consistent clamping force
• Regulatory compliance meets RoHS 3 and REACH standards for use in regulated industries and global markets

Professional Applications & Engineering Value

These 18-8 stainless steel tapping screws are specifically engineered for plastic assembly applications where material integrity and long-term performance are critical. The thread forming design (DST type) displaces plastic material rather than cutting it, creating stronger threads that resist loosening under vibration and thermal cycling. The blunt tip prevents stress concentration and cracking in brittle plastics, while the fully threaded shank provides consistent holding power across the entire engagement length. Ideal for electrical enclosures, automotive trim, consumer electronics, and industrial equipment, these screws deliver reliable fastening without the need for inserts or additional components, reducing assembly time and total cost.

Specification Summary & Compliance

This No. 12 x 3/4" tapping screw features a 0.216" thread diameter with 16 threads per inch in right-hand direction. The pan head measures 0.373" in diameter with standard rounded profile, requiring a No. 3 Phillips drive for installation. Designed for use with 3/16" (0.1875") drill bits in plastic materials, the screw achieves proper thread formation without stripping. Manufactured to industry standards for thread forming screws, this product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for demanding industrial applications.