S-91241A416 4-40 x 3/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Spring Lock Washer
Stainless Steel Pan Head Phillips Screws with Spring 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 construction and passivated finish, ideal for harsh industrial environments.
- Reliable vibration resistance thanks to the integrated 410 stainless steel spring lock washer, preventing loosening under dynamic loads.
- High tensile strength of 70,000 psi ensures dependable performance in demanding applications.
- Easy installation and removal with a No. 1 Phillips drive and fully threaded coarse UNC design.
- Precise thread fit (Class 2A) guarantees consistent engagement and reduces the risk of cross-threading.
- Compliance with industry standards including ASME B18.13, RoHS 3, and REACH for quality assurance and environmental safety.
- Durable pan head design provides a low-profile, secure fastening with a standard rounded profile.
Professional Applications & Engineering Value
This 4-40 UNC Rounded Head Phillips Screw is engineered to address common industrial fastening challenges, such as vibration-induced loosening and corrosion. The combination of 18-8 stainless steel and a passivated finish offers excellent resistance to rust and chemicals, making it suitable for machinery, electronics, and outdoor equipment. The integrated spring lock washer—made from 410 stainless steel—ensures a secure hold in high-vibration environments, reducing maintenance needs. With a coarse thread and Class 2A fit, it allows for quick assembly and reliable performance in heavy-duty fastening applications, streamlining production while enhancing product longevity.
Specification Summary & Compliance
This screw features a Class 2A thread fit with UNC coarse threading, ensuring dimensional accuracy and compatibility. It meets ASME B18.13 specifications for consistency and reliability. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.
