S-99461A218 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for demanding environments and long-term reliability in plastic assemblies.
• Efficient, self-tapping installation using the thread forming TRS design, eliminating the need for pre-tapped holes and reducing assembly time.
• Exceptional resistance to back-out and vibration thanks to the tri-lobe shank cross-section, which ensures a secure, lasting hold in plastic materials.
• Widely compatible and easy to drive with a standard Phillips No. 3 drive, accommodating common tools for straightforward installation.
• Full 1" threading provides consistent engagement and holding power along the entire fastener length for robust plastic connections.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.
• Optimized for plastic fastening with a blunt tip and specific drill bit guidance (No. 4 / 0.209"), minimizing material stress and cracking during installation.

Professional Applications & Engineering Value

These 1/4"-10 thread forming TRS screws are engineered to address common challenges in plastic fastening, such as strip-out, material fatigue, and loosening under vibration. The 18-8 stainless steel offers excellent durability and corrosion resistance, while the tri-lobe shank design displaces plastic material to form strong, permanent threads without creating chips. This reduces the risk of cracking in brittle plastics and ensures a tight fit that resists back-out. Ideal for industrial assemblies in automotive, electronics, and consumer goods, these screws provide reliable performance with a Phillips drive for efficient, tool-compatible installation, enhancing productivity and reducing maintenance needs in plastic applications.

Specification Summary & Compliance

This screw features a 1/4"-10 thread with a tri-lobe shank for thread forming (TRS type), fully threaded along a 1" length. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. Designed for use with a No. 4 drill bit (0.209" diameter) in plastic materials, it supports standard industrial practices for reliable, compliant fastening solutions.