S-96562A540 1/4"-20 x 3/4" ASME B18.6.3 Thread-Locking Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon patch thread locking that prevents loosening under dynamic loads
• Excellent corrosion protection through 18-8 stainless steel construction and passivated surface treatment
• Reliable fastening performance with Class 2A UNC coarse threads ensuring proper fit and easy installation
• Wide temperature tolerance from -70° to 250°F for stable performance in diverse operating environments
• High mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Secure Phillips drive engagement with No. 3 drive size providing positive torque transmission during installation
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability

Professional Applications & Engineering Value

These nylon patch locking rounded head screws deliver exceptional engineering value in applications where vibration-induced loosening compromises assembly integrity. The 18-8 stainless steel material combined with passivated finish provides superior corrosion resistance in harsh environments, while the nylon patch locking mechanism creates permanent friction that maintains clamp load without damaging threads. The UNC coarse threads and Class 2A thread fit ensure rapid installation and reliable engagement in various materials. Ideal for industrial equipment, machinery assemblies, and electronic enclosures, these Phillips drive screws offer a cost-effective vibration-resistant solution that eliminates the need for separate locking hardware, reducing assembly time and maintenance requirements.

Specification Summary & Compliance

This fastener features precision Class 2A thread fit with UNC coarse threads (1/4"-20) and full threading along the 3/4" length. Manufactured to ASME B18.6.3 specifications, it ensures dimensional accuracy and interchangeability. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial components. The combination of 60,000 psi tensile strength and Rockwell B70 hardness guarantees mechanical reliability across the specified temperature range of -70° to 250°F.