S-96909A408 4-40 x 3/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Split Lock Washer
Stainless Steel Pan Head Phillips Screws with Split Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
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 industrial environments.
- Reliable vibration resistance thanks to the integrated 410 stainless steel split lock washer, preventing loosening under dynamic loads.
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness, ensuring durability in heavy-duty applications.
- Effortless installation using the Phillips No. 1 drive, providing secure torque transfer and reducing assembly time.
- Wide compatibility with coarse UNC 4-40 threads and fully threaded design, offering versatile fastening solutions.
- Secure and stable fit from the rounded pan head design, distributing clamp load evenly and minimizing surface damage.
- Full regulatory compliance with ASME B18.13, RoHS 3, and REACH, ensuring safety and environmental standards are met.
Professional Applications & Engineering Value
This 4-40 UNC screw with a rounded head and integrated lock washer is engineered to address common industrial challenges like vibration-induced loosening and corrosion. Constructed from 18-8 stainless steel with a passivated finish, it resists rust and chemical exposure, making it ideal for automotive assemblies, machinery, and outdoor equipment. The 410 stainless steel split lock washer provides consistent locking force, enhancing joint integrity in high-stress environments. Its coarse thread and fully threaded design ensure quick, reliable fastening in various materials, reducing maintenance needs and improving operational reliability in demanding applications.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with standard Class 2A fit, ensuring precise dimensional accuracy. It is manufactured in compliance with ASME B18.13 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
