S-92400A220 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through the unique Tri-Lobe shank design that creates secure, long-lasting fastening in plastic materials
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in various industrial environments
• Efficient installation with 1/4" external hex head design allowing for quick driving and high torque application
• Optimal thread forming with TRS screw type that displaces material without creating chips, ensuring clean plastic assembly
• Reliable holding power from the thread forming action that creates strong, permanent threads in plastic substrates
• Precise compatibility with No. 29 drill bit (0.136" diameter) for proper hole preparation and optimal performance
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated applications

Professional Applications & Engineering Value

This No. 8 thread forming screw delivers exceptional engineering value for plastic assembly applications where traditional fastening methods often fail. The Tri-Lobe shank cross-section and thread forming design solve critical industrial challenges by eliminating the risk of material cracking and providing superior resistance to vibration loosening. Made from zinc-plated steel, these TRS screws maintain integrity in environments where moisture or chemicals are present. The fully threaded configuration and 16 TPI right-hand thread ensure maximum engagement depth, while the 1/4" hex head facilitates efficient installation in high-volume production settings. Ideal for automotive trim, electronic enclosures, and commercial plastic components requiring durable, maintenance-free fastening solutions.

Specification Summary & Compliance

This thread forming screw features precise inch system dimensions including No. 8 thread diameter (0.164"), 3/8" length, and 1/4" hex head width. The TRS (Thread Rolling Screw) type with Tri-Lobe shank ensures proper thread formation in plastic materials when used with the recommended No. 29 drill bit (0.136" diameter). Manufactured to industry standards for thread forming screws, this fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets.