S-92360A314 1/4"-20 x 1/2" 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
- Secure vibration resistance with nylon patch thread locker that maintains locking performance from -70° to 250° F, preventing loosening in demanding applications
- Exceptional tensile strength of 120,000 psi provides reliable fastening integrity under high-stress conditions
- Precise Class 3A thread fit ensures superior engagement and consistent clamping force in critical assemblies
- Corrosion-resistant black-oxide coating on alloy steel substrate extends service life in various industrial environments
- Optimized hex drive design with 5/32" drive size delivers efficient installation and high torque transmission
- Fully threaded UNC coarse configuration enables rapid assembly and superior holding power across the entire fastener length
- Rounded button head profile combines low-profile aesthetics with practical clearance advantages
Professional Applications & Engineering Value
This black-oxide alloy steel rounded head hex screw addresses critical vibration-induced failure points in industrial equipment, machinery, and automotive assemblies. The integrated nylon patch thread locker creates permanent friction locking without compromising the Class 3A UNC coarse thread precision, eliminating the need for secondary locking components. The alloy steel construction with 120,000 psi tensile strength ensures structural integrity in high-load applications, while the black-oxide surface treatment provides corrosion protection without dimensional interference. Engineered for precision assemblies requiring reliable, maintenance-free fastening solutions where vibration resistance and consistent clamp load are paramount.
Specification Summary & Compliance
Manufactured to exact Class 3A thread fit tolerances with UNC coarse threading (1/4"-20) and full threading along the 1/2" length. Complies with ASME B18.3, ASTM F835, and MIL-DTL-18240 specifications for dimensional accuracy and performance requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features Rockwell C39 hardness and maintains mechanical properties across the specified operational temperature range.
