S-91515A700 Length 4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Efficient installation through self-drilling tip design, eliminating pre-drilling requirements and reducing assembly time
• Enhanced holding power with fully threaded No. 8 shank and 18 TPI thread forming design for permanent fastening in steel and sheet metal
• Increased load distribution from wide truss head with integrated flange, preventing pull-through in thin materials
• Reliable drive engagement with No. 2 Phillips drive, minimizing cam-out during high-torque installation
• Optimized material penetration with 5/32" drill tip capable of drilling through 0.098" thickness without pilot holes
• Environmental compliance assurance meeting RoHS 3 standards for safe use in regulated industries

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional engineering value in steel and sheet metal fabrication applications where time efficiency and joint integrity are critical. The thread forming BSD design creates precise mating threads in base materials without generating chips, eliminating contamination risks in electrical enclosures, HVAC systems, and metal framing. The combination of 0.164" thread diameter with fully threaded 4" length provides maximum engagement in varying material thicknesses, while the self-drilling tip with No. 2 point specification streamlines installation in production environments. The flanged truss head offers superior clamping force distribution, preventing material deformation in thin-gauge applications commonly encountered in automotive, construction, and industrial equipment assembly.

Specification Summary & Compliance

These tapping screws feature precision 0.164" thread diameter with 18 TPI right-hand threads in a fully threaded configuration. Manufactured to BSD thread forming standards with Class 2A thread tolerances for consistent performance. The zinc-plated steel construction provides corrosion protection, while compliance with RoHS 3 (2015/863/EU) ensures environmental safety standards are met for industrial applications requiring regulatory adherence.