S-98903A253 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in demanding industrial environments
• Thread forming technology creates stronger, more secure threads in sheet metal without chip removal
• 82° countersink angle with undercut flat head provides flush installation and superior seating in sheet metal applications
• Precision Phillips No. 2 drive enables efficient installation with standard tools while minimizing cam-out
• Fully threaded design with pointed tip ensures maximum grip length and easier starting in pre-drilled holes
• Optimized for 0.025" maximum drilling thickness delivers reliable performance in standard sheet metal gauges
• Environmental compliance meets RoHS 3 and REACH regulations for global manufacturing requirements

Professional Applications & Engineering Value

These Type A thread forming screws are engineered specifically for sheet metal applications where reliable fastening and corrosion resistance are critical. The 18-8 stainless steel composition provides excellent strength and durability while resisting oxidation in harsh environments. The thread forming design eliminates the need for tapping operations by cold-forming mating threads directly into the material, creating stronger connections than conventional cutting screws. The undercut flat head with 82° countersink ensures a flush finish that minimizes protrusion and improves aerodynamic profiles in enclosure assemblies. These Phillips drive screws with 0.164" thread diameter and 15 threads per inch deliver optimal engagement in pre-drilled No. 29 holes, making them ideal for HVAC systems, electrical enclosures, and machinery panels where vibration resistance and long-term performance are essential.

Specification Summary & Compliance

These No. 8 x 5/8" tapping screws feature precision right-hand threads with standard thread forming Type A specifications. The fully threaded design ensures maximum holding power across the entire 5/8" length. Manufactured to industry standards with 0.164" thread diameter and 15 threads per inch for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict chemical substance controls.