S-99461A975 Length 40 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in demanding environments
• Excellent thread-forming capability creates strong, permanent threads in plastic materials without pre-tapping
• Optimized blunt tip design prevents material splitting and ensures clean installation in plastic components
• Full threading along the 40mm length provides maximum holding power and uniform stress distribution
• Reliable Phillips No. 1 drive offers secure tool engagement and efficient installation with standard drivers
• Precision M4 metric sizing with 1.79mm thread pitch ensures consistent performance and interchangeability
• Compliant with RoHS 3 and REACH regulations for safe use in industrial and consumer applications

Professional Applications & Engineering Value

These M4 TRS thread forming screws are specifically engineered for plastic assembly applications where reliable fastening is critical. The 18-8 stainless steel construction provides exceptional corrosion resistance, making these tapping screws ideal for outdoor equipment, automotive components, and electronic enclosures exposed to moisture or chemicals. The thread forming design eliminates the need for pre-tapped holes, reducing assembly time and costs while creating strong, vibration-resistant connections in thermoplastics and other plastic materials. The rounded pan head with Phillips drive ensures flush mounting and easy installation with standard tools, while the fully threaded shank maximizes pull-out strength in plastic substrates. These metric fasteners solve common plastic fastening challenges including material cracking, thread stripping, and corrosion-induced failure.

Specification Summary & Compliance

These M4 x 40mm TRS tapping screws feature precision metric dimensions including 7mm head diameter, 1.79mm thread pitch, and full threading along the entire 40mm length. Manufactured to thread forming standards for plastic applications, they are designed for use with No. 30 drill bits (0.1285" diameter). The screws maintain dimensional accuracy suitable for industrial applications and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet the latest compliance requirements for hazardous substance restrictions.