S-99461A173 Length 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life in plastic assemblies
• Excellent holding power in plastic materials due to the advanced Tri-Lobe shank design that forms strong, secure threads without pre-tapping
• Reduced installation stress and material cracking through thread forming technology, preserving the integrity of plastic components
• Reliable and efficient drive engagement with the No. 1 Phillips drive, ensuring consistent torque application and reducing cam-out
• Precise 28 threads per inch for fine adjustment and a tight, vibration-resistant fit in plastic applications
• Full threading along the 1/4" length provides maximum grip and uniform stress distribution along the entire fastener
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for regulated industries

Professional Applications & Engineering Value

This 316 Stainless Steel TRS Tapping Screw is engineered specifically for plastic fastening applications where material integrity and long-term performance are critical. The thread forming (TRS) design with its unique Tri-Lobe shank cross-section displaces plastic material during installation, creating strong, clean internal threads without generating chips. This eliminates the risk of loose debris interfering with sensitive components and prevents stress concentration that can lead to cracking in brittle plastics. The blunt tip and controlled thread form ensure easy starting and reduce the potential for material splitting. Combined with the excellent chemical resistance of 316 stainless steel, these screws provide a durable, reliable fastening solution for electronics enclosures, automotive plastic trim, consumer products, and other industrial assemblies exposed to moisture or corrosive elements.

Specification Summary & Compliance

This screw conforms to standard inch system dimensions with a No. 2 screw size, 0.086" thread diameter, and 1/4" length. It features a right-hand thread direction and is fully threaded. The drive system is a No. 1 Phillips with a standard pan head profile. This product is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for industrial use.