S-90303A435 3/8"-16 x 1 1/4" ASME B18.3, ASTM A574 Nylon-Tip Alloy Steel Socket Head Screws
Nylon-Tip Alloy Steel Socket 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
- Non-marring nylon tip protects sensitive surfaces from scratches and damage during installation and use
- Exceptional tensile strength of 180,000 psi ensures reliable performance in high-stress industrial applications
- Black-oxide finish on alloy steel provides enhanced corrosion resistance and durability
- Class 3A thread fit with UNC coarse threading delivers precise, secure fastening with reduced cross-threading risk
- Wide temperature tolerance (-50° to 250°F) maintains performance across diverse operating environments
- Socket head with hex drive design allows for high-torque installation in confined spaces
- Full threading along the entire length enables adjustable positioning and consistent clamping force
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw with protective nylon tip solves critical challenges in precision assembly applications where surface protection and high clamping forces are simultaneously required. The non-marring tip prevents damage to finished surfaces in automotive, aerospace, and electronics manufacturing, while the Rockwell C39 hardness and 180,000 psi tensile strength ensure the fastener withstands vibration and heavy loads. The UNC coarse thread with Class 3A fit provides rapid installation with exceptional thread engagement, reducing assembly time in production environments. The combination of hex drive socket head and fully threaded design makes it ideal for machinery, jigs, and fixtures where accessibility is limited but high torque application is necessary.
Specification Summary & Compliance
This socket head cap screw features 3/8"-16 UNC coarse threads with Class 3A thread fit for precision tolerance. Manufacturing complies with ASME B18.3 specifications and material standards ASTM A574. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.
