S-90385A324 Length 7/8" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior plastic retention with thread forming design that creates strong, permanent threads without chips or debris
• Corrosion-resistant zinc plating provides durable protection against environmental elements in industrial settings
• Optimized Phillips drive system ensures secure installation and prevents cam-out during high-torque applications
• Precision blunt tip design allows for easy starting and proper alignment in plastic materials
• Full threading along the 7/8" length delivers maximum holding power and uniform stress distribution
• ASME B18.6.3 compliance guarantees consistent quality and dimensional accuracy for reliable performance
• Right-hand threading with 24 TPI provides excellent pull-out resistance in various plastic substrates

Professional Applications & Engineering Value

This zinc-plated steel tapping screw is specifically engineered for plastic assembly applications where traditional fasteners fail. The thread forming DST design eliminates the risk of material cracking or stress concentration by displacing rather than removing plastic material during installation. The pan head configuration with Phillips drive offers a low-profile solution that sits flush against surfaces while providing sufficient drive torque. Manufactured to ASME B18.6.3 standards, these screws deliver predictable performance in automotive trim, electronic enclosures, and consumer products where plastic fastening reliability is critical. The combination of 0.112" thread diameter and 24 threads per inch creates optimal engagement in plastic substrates without compromising material integrity.

Specification Summary & Compliance

This No. 4-24 tapping screw features inch system measurements with Class 2A thread tolerances and complies with ASME B18.6.3 manufacturing specifications. The fully threaded 7/8" length with right-hand direction ensures consistent engagement, while the standard pan head profile maintains dimensional accuracy. The product meets industry standards for thread forming screws in plastic applications and is compatible with No. 44 drill bit (0.086" diameter) for proper hole preparation. Materials and manufacturing processes comply with RoHS and REACH environmental regulations.