S-95092A631 4-40 x 3/16" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Flat and Split Lock Washer
Stainless Steel Pan Head Phillips Screws with Flat and 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 for long-lasting performance in harsh environments.
- Enhanced vibration resistance thanks to the integrated split lock washer, preventing loosening under dynamic loads.
- High-strength fastening with 70,000 psi tensile strength and Rockwell B80 hardness for demanding applications.
- Reliable coarse threading (UNC) ensures quick assembly and secure grip in a variety of materials.
- Optimized drive engagement with Phillips No. 1 drive and rounded pan head for efficient installation and reduced cam-out.
- Full threading along the 3/16" length provides maximum thread engagement and holding power.
- Compliance with industry standards including ASME B18.13, ensuring consistent quality and interchangeability.
Professional Applications & Engineering Value
This 4-40 UNC Rounded Head Phillips Screw with Lock Washer is engineered to address common industrial challenges like vibration-induced loosening and corrosion. The 18-8 Stainless Steel construction, combined with a passivated finish, offers excellent resistance to rust and chemical exposure, making it ideal for industrial applications in machinery, electronics, and outdoor equipment. The integrated lock washer provides reliable anti-vibration performance, maintaining clamp load in high-stress environments. Its coarse thread (UNC) and fully threaded design ensure rapid installation and strong holding power in both metal and plastic assemblies, reducing assembly time and improving operational reliability.
Specification Summary & Compliance
This screw features a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured to meet ASME B18.13 specifications, ensuring dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and use in global markets.
