S-90065A257 Length 3" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Effortless installation through thread forming design that creates strong, secure threads without pre-tapping in sheet metal up to 0.025" thickness.
• Optimal flush mounting with standard 82° flat head profile and Phillips drive, providing clean finishes and preventing snagging.
• Maximum grip strength from fully threaded No. 10-12 configuration, delivering consistent holding power across the entire 3" length.
• Precision compatibility with No. 21 drill bit (0.159" diameter), ensuring accurate hole preparation and reduced installation errors.
• Enhanced driving control via No. 2 Phillips drive, minimizing cam-out and improving assembly efficiency.
• Regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements.

Professional Applications & Engineering Value

These 18-8 stainless steel Phillips flat head tapping screws are engineered specifically for demanding sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming design eliminates the need for separate tapping operations, creating stronger threads by displacing material rather than removing it. This results in superior pull-out resistance and vibration-proof connections in metal assemblies. The 82° countersink angle ensures flush seating in prepared holes, while the fully threaded configuration provides consistent clamping force along the entire fastener length. Ideal for HVAC systems, electronic enclosures, and industrial equipment manufacturing, these screws deliver reliable performance in environments where thermal cycling and moisture exposure would compromise inferior fasteners.

Specification Summary & Compliance

Manufactured to precise dimensional standards with No. 10-12 thread configuration (0.19" diameter, 12 TPI) and right-hand threading. Features standard Class 2A thread tolerances for consistent fit and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The flat head design incorporates standard 82° countersink angle for proper seating in prepared sheet metal applications requiring No. 21 drill bit preparation.