S-92360A425 5/16"-18 x 1" ASME B18.3, ASTM F835, MIL-DTL-18240 Thread-Locking Steel Button Head Hex-Drive Screws
Thread-Locking Steel Button Head Hex-Drive 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
- Vibration-resistant locking with a nylon patch thread locker prevents loosening under dynamic loads, ensuring long-term assembly integrity.
- Exceptional tensile strength of 120,000 psi and Rockwell C39 hardness provide reliable performance in high-stress and heavy-duty applications.
- Black-oxide finish on alloy steel enhances corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit and UNC coarse threading ensure precise, easy engagement and superior fatigue resistance.
- Wide temperature tolerance from -70° to 250°F allows stable performance in extreme thermal conditions.
- Hex drive design offers high torque transmission and reduces the risk of tool slippage during installation.
- Rounded button head profile provides a low-profile, finished appearance while minimizing snagging risks.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these Black-Oxide Alloy Steel Rounded Head Screws address critical challenges like vibration-induced failure and environmental degradation. The nylon patch thread locker securely maintains clamp load in machinery, automotive assemblies, and electrical enclosures subject to constant motion. With a coarse UNC thread and Class 3A fit, installation is swift and reliable, reducing assembly time while resisting cross-threading. The combination of 120,000 psi tensile strength and corrosion-resistant black-oxide coating ensures durability in outdoor or chemically exposed applications, making these screws ideal for construction, aerospace, and heavy equipment where safety and longevity are paramount.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC thread with Class 3A precision fit and is fully threaded for consistent holding power. Manufacturing adheres to ASME B18.3, ASTM F835, and MIL-DTL-18240 specifications, guaranteeing dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets stringent environmental and safety regulations for global industrial use.
