S-94066A854 1/4"-20 x 1/4" Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws
Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments and long-term reliability.
- High mechanical strength offering 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications without failure.
- Secure and tamper-resistant installation via drilled spanner drive, ensuring firm tool engagement and controlled torque application.
- Precise and reliable threading with UNC coarse thread and Class 2A fit for easy assembly and consistent performance in various materials.
- Fully threaded design maximizes grip and load distribution along the entire 1/4" length for enhanced holding power.
- Rounded pan head profile provides a low-profile, finished appearance while reducing surface snagging.
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.
Professional Applications & Engineering Value
This 1/4"-20 UNC rounded pan head screw is engineered to address critical industrial challenges, such as vibration loosening and environmental degradation. The 18-8 stainless steel construction, enhanced by a passivated finish, provides exceptional resistance to corrosion, making it suitable for outdoor, marine, and chemical-exposed settings. The drilled spanner drive allows for high-torque installation in confined spaces, reducing the risk of stripping and improving maintenance efficiency. With its coarse thread and Class 2A fit, it ensures quick, secure fastening in metal, plastic, and wood assemblies, minimizing assembly time and enhancing structural integrity in machinery, electronics, and automotive applications.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from 18-8 stainless steel with a passivated finish, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in industrial markets.
