S-99461A976 Length 8 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and ensuring long-term reliability in plastic assemblies.
• Excellent thread-forming capability with TRS design creates strong, permanent threads in plastic materials without pre-tapping, reducing assembly time and tooling costs.
• Optimized for plastic fastening with a blunt tip and fully threaded shank, minimizing material stress and preventing cracking in delicate plastic components.
• Secure and efficient driving provided by the Phillips No. 2 drive, offering good torque transfer and reducing the risk of cam-out during installation.
• Precise dimensional accuracy with M5 size and 2.24mm pitch ensures consistent performance and reliable fit in pre-drilled No. 21 (0.159") holes.
• Enhanced holding power from the fully threaded 8mm length and pan head design, providing a wide bearing surface for a firm, vibration-resistant clamp.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe use in various industrial and consumer applications.

Professional Applications & Engineering Value

These M5 tapping screws are specifically engineered for plastic fastening applications, where traditional fasteners can cause material failure. The 18-8 stainless steel offers excellent resistance to corrosion and oxidation, making these TRS thread forming screws suitable for outdoor equipment, automotive interiors, and electronic enclosures. The thread forming technology displaces plastic material to create strong, load-bearing threads without generating chips, eliminating cleanup and ensuring a tight, reliable fit. This design is critical for plastic assembly as it reduces stress concentration, prevents cracking, and maintains the integrity of brittle substrates. The combination of a Phillips drive and precise 2.24mm pitch allows for quick installation with standard tools, streamlining production lines and reducing labor costs in high-volume manufacturing environments.

Specification Summary & Compliance

This product features metric (M5) sizing with an 8mm length and 2.24mm thread pitch, designed for use with a No. 21 drill bit (0.159" diameter). The TRS (Thread Rolling Screw) type follows standard thread-forming principles for plastics. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the absence of restricted hazardous substances for safe industrial and consumer use.