S-96562A539 1/4"-20 x 5/8" ASME B18.6.3 Thread-Locking Stainless Steel Pan Head Phillips Screws
Thread-Locking Stainless Steel Pan Head Phillips Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Vibration-resistant locking: Nylon patch thread locker maintains secure fastening from -70° to 250°F, preventing loosening in dynamic industrial environments.
- Superior corrosion resistance: 18-8 stainless steel construction with passivated finish ensures long-term durability in harsh or moist conditions.
- High-strength performance: 60,000 psi tensile strength and Rockwell B70 hardness provide reliable load-bearing capacity for demanding applications.
- Quick installation: No. 3 Phillips drive and pan head design offer excellent torque transfer and easy access in confined spaces.
- Precision threading: UNC coarse threads with Class 2A fit ensure smooth engagement and consistent clamping force.
- Full-thread engagement: Completely threaded shank maximizes holding power across the entire fastener length.
- Regulatory compliance: Meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH.
Professional Applications & Engineering Value
These nylon patch locking screws deliver critical vibration resistance in machinery, automotive assemblies, and electrical enclosures where thermal cycling and movement threaten joint integrity. The 18-8 stainless steel core provides inherent corrosion resistance, while the passivated finish enhances surface durability against chemical exposure. With UNC coarse threading and Class 2A fit, installation is streamlined in production environments, reducing assembly time. The fully threaded design ensures maximum grip length in various material thicknesses, making these pan head Phillips screws ideal for maintenance, manufacturing, and OEM applications requiring reliable, permanent fastening solutions.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit tolerance for consistent performance. Features 1/4"-20 UNC coarse threads and complete compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The nylon patch locking system operates effectively across the specified temperature range of -70° to 250°F while maintaining mechanical properties.
