S-94629A170 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 Stainless Steel construction, ensuring long-term reliability in various industrial environments
• Efficient thread cutting design creates precise mating threads in plastic materials, reducing installation time and eliminating pre-tapping needs
• Optimized Phillips drive system with No. 1 drive size provides secure tool engagement and prevents cam-out during high-torque applications
• Full threading along the entire 3/4" length delivers maximum holding power and uniform stress distribution in plastic assemblies
• Standard pan head profile with 0.219" diameter offers excellent bearing surface and clean aesthetic finish
• Environmental compliance assurance with RoHS 3 and REACH standards, making them suitable for regulated industries and export markets
• Precision-matched drilling compatibility with No. 41 drill bit (0.096" diameter) ensures perfect hole preparation for optimal thread engagement

Professional Applications & Engineering Value

These Type 25/BT thread cutting screws are specifically engineered to address common challenges in plastic assembly applications, where traditional fastening methods often cause material cracking or stripping. The 410 Stainless Steel composition provides essential corrosion resistance while maintaining the hardness required for effective thread cutting in thermoplastics and composite materials. The fully threaded design with 24 TPI (threads per inch) ensures maximum pull-out resistance and vibration resistance in plastic components, making them ideal for electrical enclosures, automotive trim, consumer electronics, and industrial equipment where reliable plastic-to-plastic or plastic-to-metal connections are critical. The Phillips drive system combined with the pan head profile allows for efficient installation in confined spaces while providing sufficient clamping force without damaging delicate plastic substrates.

Specification Summary & Compliance

This No. 4-24 x 3/4" tapping screw features precision right-hand threads with standard inch system measurements, including 0.112" thread diameter and fully threaded shank configuration. Manufactured to Type 25/BT tapping screw standards for plastic applications, these fasteners demonstrate compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they contain no restricted substances and are suitable for global manufacturing requirements. The blunt tip design and specific thread form are optimized for use with No. 41 drill bits (0.096" diameter) to achieve proper thread engagement in plastic materials.