S-92360A420 5/16"-18 x 3/4" 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 permanent nylon patch thread locker that maintains secure fastening from -70° to 250°F
- Superior strength and durability from alloy steel construction with Rockwell C39 hardness and 120,000 psi tensile strength
- Precise thread engagement with Class 3A thread fit ensuring reliable performance in critical applications
- Easy installation and removal with hex drive design providing superior torque transmission and tool access
- Corrosion-resistant protection through black-oxide coating that extends service life in demanding environments
- Industry-standard compliance meeting ASME B18.3, ASTM F835, and MIL-DTL-18240 specifications for guaranteed quality
- Full-thread coverage enabling maximum engagement strength and versatile positioning in assemblies
Professional Applications & Engineering Value
These black-oxide alloy steel rounded head hex screws with permanent nylon patch thread locking technology address critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and heavy equipment. The UNC coarse thread pattern with Class 3A precision fit ensures rapid installation and reliable performance in high-stress applications. Engineered with 120,000 psi tensile strength and Rockwell C39 hardness, these fully threaded fasteners maintain structural integrity under extreme operational conditions. The temperature-resistant nylon patch thread locker provides permanent vibration resistance from -70° to 250°F, making them ideal for applications requiring secure, maintenance-free fastening solutions in manufacturing, aerospace, and defense sectors.
Specification Summary & Compliance
Manufactured to Class 3A thread fit tolerances with UNC coarse thread specifications (5/16"-18). Complies with ASME B18.3, ASTM F835, and MIL-DTL-18240 manufacturing standards. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features include 3/4" length, 3/16" hex drive, right-hand threading, and fully threaded design for maximum fastening reliability.
