S-90434A176 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic materials thanks to the Tri-Lobe shank cross-section, which displaces material to create a secure, vibration-resistant connection.
• Reduced risk of plastic cracking or stress failure with the thread-forming (TRS) tapping method, which forms threads without cutting and removing material.
• Enhanced corrosion resistance for extended service life provided by the zinc-plated steel construction, protecting the fastener in various industrial environments.
• Efficient and reliable installation with the standard Phillips No. 1 drive, ensuring common tool compatibility and preventing cam-out during driving.
• Optimized for thin-section plastic assembly with a 3/8" length and 28 TPI fine threading, delivering a strong, precise grip without stripping.
• Flush, clean finish for assembled products achieved with the 82° countersink angle flat head, allowing the screw to sit neatly within the material.
• Compliance with stringent environmental regulations, meeting RoHS 3 and REACH standards for safe and responsible manufacturing.

Professional Applications & Engineering Value

These No. 2 TRS thread-forming screws are engineered specifically for plastic fastening challenges, where traditional screws can cause cracking or strip threads. The Tri-Lobe shank design and thread forming action compress the plastic, creating strong, load-bearing threads with exceptional resistance to loosening from vibration. This makes them ideal for industrial applications in electronics enclosures, automotive trim, and consumer appliances. The zinc-plated steel material offers a durable, cost-effective solution, while the Phillips drive and flat head profile ensure straightforward installation and a professional, finished appearance. By eliminating the need for pre-tapped holes, these screws streamline assembly processes and enhance joint integrity in plastic components.

Specification Summary & Compliance

This screw features a No. 2 size with a 0.086" thread diameter and 28 TPI precision threading, designed for use with a 5/64" (0.0781") drill bit. It is manufactured as a TRS (Thread Rolling Screw) type with a right-hand thread direction and is fully threaded for maximum engagement. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets the latest standards for restricted substances.