S-95639A304 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Effortless installation using a standard Phillips No. 1 drive, reducing tool slippage and assembly time.
• Secure, flush-mount finish with an oval head and 82° countersink angle that sits neatly in sheet metal for a professional appearance.
• Strong, reliable thread formation in materials up to 0.025" thick, creating durable threads without pre-tapping for reduced labor.
• Precise 24 TPI threading ensures tight, vibration-resistant fastening in sheet metal assemblies.
• Full compliance with RoHS 3 and REACH regulations, guaranteeing safe, environmentally responsible materials for global supply chains.
• Optimized for No. 44 drill bits (0.086" diameter), ensuring accurate pilot holes and preventing material damage during installation.

Professional Applications & Engineering Value

This No. 4 x 1/2" thread forming tapping screw is engineered to solve common challenges in sheet metal fabrication, such as strip-out and corrosion. Made from 316 stainless steel, it offers exceptional resistance to chemicals and moisture, extending service life in demanding settings like HVAC, electronics enclosures, and marine hardware. The Phillips oval head design provides a low-profile, aesthetically pleasing finish that minimizes snagging, while the thread forming action displaces material to form strong, load-bearing threads without chips, reducing the risk of loose connections. With its fully threaded shank and right-hand direction, it ensures consistent clamping force and ease of use in automated or manual assembly lines, enhancing productivity and reliability.

Specification Summary & Compliance

This screw adheres to standard inch measurements with a No. 4 size, 1/2" length, and 24 TPI thread pitch for precise fit. It meets A/AB tapping screw specifications and is designed for use with a No. 44 drill bit (0.086" diameter). Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free of hazardous substances and suitable for industrial applications requiring environmental and safety standards.