S-99461A350 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in humid or demanding environments.
• Excellent holding power in plastic materials due to the tri-lobe shank design, which prevents loosening and provides secure, vibration-resistant fastening.
• Efficient installation with Phillips No. 2 drive, allowing for quick, tool-compatible driving without stripping or cam-out issues.
• Optimal thread forming in plastics using TRS thread forming technology, creating strong, clean threads without pre-tapping.
• Precise fit with No. 29 drill bit compatibility, ensuring accurate hole sizing and reducing assembly errors.
• Full-length threading for maximum grip, distributing load evenly across the entire fastener length in plastic substrates.
• Compliance with environmental regulations including RoHS 3 and REACH, making them suitable for global industrial and consumer applications.

Professional Applications & Engineering Value

This No. 8 x 1/2" TRS tapping screw is specifically engineered for plastic assembly applications, addressing common challenges like material cracking, thread stripping, and corrosion. The 18-8 Stainless Steel material offers excellent resistance to rust and chemical exposure, while the tri-lobe shank and thread forming design displace plastic material to create durable, high-retention threads without generating chips. This reduces the risk of stress concentration and improves joint integrity in plastic components used in electronics, automotive trim, and consumer goods. The Phillips drive ensures compatibility with standard tools, streamlining production lines and minimizing installation time. With a blunt tip and 16 TPI right-hand thread, it provides controlled penetration and reliable fastening in thermoplastics and other plastic substrates, enhancing overall assembly durability.

Specification Summary & Compliance

This screw features a No. 8 size with 1/2" length, 16 TPI thread pitch, and Class 2A thread fit for consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. Designed for use with a No. 29 drill bit (0.136" diameter), it maintains precise tolerances and is manufactured to industry standards for thread forming screws in plastic applications.