S-93406A155 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments and reducing maintenance costs.
• Superior sheet metal fastening through thread forming technology that creates strong, permanent threads without pre-tapping, saving installation time and labor.
• Enhanced load distribution with the wide truss head design, preventing pull-through in thin materials and providing a secure, flush finish.
• Optimized driving efficiency featuring a No. 2 Phillips drive for common tool compatibility and reduced cam-out during high-torque applications.
• Full-length threading delivers maximum grip along the entire 1-1/4" length, ensuring consistent holding power in various material thicknesses.
• Compliance with environmental standards including RoHS 3 and REACH, making these screws suitable for regulated industries and global supply chains.
• Precision-engineered dimensions with 0.138" thread diameter and 18 TPI for reliable performance in standard No. 32 drill bit preparations.

Professional Applications & Engineering Value

These 18-8 stainless steel tapping screws are engineered to address common challenges in sheet metal assembly, where vibration resistance, material integrity, and corrosion prevention are critical. The thread forming design eliminates the need for separate tapping operations, reducing assembly steps and minimizing the risk of strip-out in thin-gauge metals. With a maximum drilling thickness of 0.025", they provide reliable fastening in HVAC systems, electronic enclosures, and automotive panels. The Phillips truss head offers a low-profile, wide-bearing surface that distributes clamping force effectively, preventing distortion in delicate materials while maintaining a clean aesthetic finish. This combination of fully threaded shank and corrosion-resistant properties ensures durable performance in demanding industrial environments.

Specification Summary & Compliance

Manufactured to precise inch system dimensions: No. 6 screw size, 1-1/4" length, 0.138" thread diameter, and 18 threads per inch. Features Class 2A thread tolerances and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The truss head design measures 0.321" in diameter with 0.086" height, engineered for use with No. 2 Phillips drive tools and No. 32 drill bit (0.116" diameter) preparations in sheet metal applications up to 0.025" thickness.