S-90303A425 3/8"-16 x 3/4" 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
- Surface Protection: Non-marring nylon tip prevents damage to sensitive components and finishes during assembly and use.
- Enhanced Corrosion Resistance: Black-oxide finish on alloy steel provides durable protection against rust and degradation in harsh environments.
- Superior Mechanical Strength: High tensile strength of 180,000 psi and Rockwell C39 hardness ensure reliable performance under heavy loads and stress.
- Precision Thread Fit: Class 3A UNC coarse threads offer excellent engagement and vibration resistance for secure fastening in industrial applications.
- Wide Temperature Tolerance: Nylon tip maintains integrity across a broad range from -50°F to 250°F, suitable for varied operating conditions.
- Secure Hex Drive: 5/16" hex socket drive allows for high-torque installation and removal without stripping, ensuring efficient maintenance.
- Full Thread Engagement: Fully threaded design provides consistent clamping force along the entire 3/4" length for uniform load distribution.
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this Black-Oxide Alloy Steel Socket Head Cap Screw with a protective nylon tip addresses critical assembly challenges. The Class 3A UNC coarse thread ensures rapid installation and superior vibration resistance in machinery, automotive, and electronics applications where high tensile strength is paramount. The non-marring tip is ideal for protecting anodized surfaces, painted components, and delicate materials from scratches during tightening. With its hex drive design, it facilitates high-torque applications in confined spaces, while the alloy steel construction and black-oxide finish provide long-term durability against corrosion and wear, reducing maintenance costs and downtime.
Specification Summary & Compliance
This fastener meets ASME B18.3 specifications with Class 3A thread fit for precise dimensional accuracy. It is manufactured from alloy steel per ASTM A574 and features a 3/8"-16 UNC coarse thread, 5/16" hex drive, and 3/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence.
