S-90485A160 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic materials thanks to the Tri-Lobe shank design that creates strong, permanent threads without chips
• Excellent corrosion resistance provided by 18-8 Stainless Steel construction, ensuring long-term reliability in various environments
• Clean, flush installation with a standard 82° countersink angle flat head, ideal for applications requiring a smooth surface finish
• Optimized for plastic assembly with a thread forming (Type F) design that eliminates the risk of material cracking or stripping
• Secure and efficient driving with a Phillips No. 1 drive, reducing cam-out and ensuring consistent torque application
• Full 3/8" thread engagement for maximum grip and load distribution across the entire fastened joint
• Compliance with strict environmental standards including RoHS 3 and REACH, making them suitable for regulated industries

Professional Applications & Engineering Value

This Type F Thread Forming Screw is engineered specifically for plastic fastening applications, where traditional fasteners often fail. The Tri-Lobe shank cross-section and thread forming method displace plastic material to create strong, load-bearing internal threads without generating chips, eliminating contamination risks in sensitive assemblies. Made from 18-8 Stainless Steel, it resists corrosion in humid or chemical environments, extending service life in industrial fasteners for electronics enclosures, automotive components, and consumer products. The flat head with 82° countersink ensures a flush finish, while the Phillips drive offers reliable installation. Pre-drilling with a No. 44 drill bit (0.086") ensures optimal performance, preventing stress cracks in brittle plastics and providing consistent holding power.

Specification Summary & Compliance

This No. 4 TRS screw features a 3/8" length with fully threaded right-hand design and approximately 20 threads per inch. It conforms to standard thread forming screw specifications for plastic, with a Class 2A thread fit ensuring precise engagement. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free of hazardous substances and suitable for global industrial use.