S-90033A235 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments
• Efficient thread forming technology creates stronger, more secure threads in sheet metal without pre-tapping requirements
• Optimized 82° countersink angle ensures flush mounting and clean finish in sheet metal assemblies
• Full threading along the 2-1/2" length provides maximum grip and holding power throughout the entire fastener
• Phillips flat head design allows for easy installation and smooth surface finish without protrusion
• Precision sizing compatibility with No. 29 drill bit (0.136") for accurate hole preparation and secure fastening
• Right-hand threading with 15 TPI delivers reliable, consistent performance in high-vibration applications

Professional Applications & Engineering Value

These Black-Oxide Steel tapping screws are specifically engineered for sheet metal applications where reliability and durability are critical. The thread forming technology eliminates the need for separate tapping operations, reducing assembly time and labor costs while creating stronger, more vibration-resistant connections. The A/AB tapping screw type with 0.164" thread diameter and fully threaded design ensures maximum material engagement, preventing loosening under stress. The flat head profile with 82° countersink angle provides a clean, flush finish that enhances both aesthetics and safety in finished products. Ideal for HVAC systems, electronic enclosures, and metal fabrication projects requiring 0.025" maximum drilling thickness capability.

Specification Summary & Compliance

These No. 8-15 x 2-1/2" tapping screws feature precision Class 2A thread tolerances and comply with standard A/AB tapping screw specifications. The manufacturing process adheres to strict quality controls ensuring dimensional accuracy and consistent performance. Environmental compliance is verified through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, meeting the latest environmental regulations for industrial fasteners used in global markets.