S-90417A136 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior thread retention in plastic materials due to the TRS thread-forming design, reducing the risk of loosening under vibration
• Enhanced corrosion resistance from the Black-Oxide Steel finish, ensuring long-term durability in various environments
• Reduced driving torque and minimized cam-out with the Phillips No. 2 drive, providing efficient installation and operator control
• High pull-out strength achieved through the Tri-Lobe shank cross-section, which displaces material to form secure, lasting threads
• Full threading along the 1" length allows for maximum engagement depth and uniform stress distribution in plastic assemblies
• Compliance with RoHS 3 and REACH regulations ensures safe use in consumer and industrial products without hazardous substances
• Precision-matched No. 23 drill bit size (0.154") for optimal hole preparation, preventing plastic cracking and ensuring consistent performance

Professional Applications & Engineering Value

These No. 8 x 1" TRS tapping screws are engineered specifically for plastic assembly applications, where traditional fasteners may strip threads or cause material stress. The thread-forming (TRS) design with a Tri-Lobe shank cold-forms mating threads in plastic, eliminating chips and providing excellent resistance to vibrational loosening. The Black-Oxide Steel material offers a protective layer against oxidation, making these screws suitable for electronics enclosures, automotive trim, and appliance components where corrosion resistance and reliable fastening are critical. The Phillips drive ensures widespread tool compatibility, while the blunt tip and 16 TPI thread pitch enable smooth insertion without pre-tapping, reducing assembly time and labor costs in high-volume production.

Specification Summary & Compliance

This screw adheres to inch system standards with a thread diameter of 0.164" and 16 threads per inch (TPI), ensuring precise fit. The fully threaded design and Class 2A thread fit provide consistent engagement in plastic substrates. Manufacturing and material compliance include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted substances for global market acceptance.