S-91205A036 0-80 x 1/4" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking 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
- Permanent vibration resistance with nylon patch thread locker that maintains secure fastening from -70° to 250°F
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications
- Superior thread precision with Class 3A fit provides consistent engagement and reduced assembly issues
- Enhanced corrosion protection through black-oxide coating on alloy steel for extended service life
- Optimized drive efficiency with standard hex socket and 0.050" drive size for secure tool engagement
- Industry compliance assurance meeting ASME B18.3, ASTM A574, RoHS 3, and REACH standards
- Fine thread advantage with UNF 0-80 threading offering superior holding power in delicate assemblies
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance where vibration resistance and precision matter most. The nylon patch thread locking technology permanently secures fasteners against loosening in demanding environments from aerospace components to precision instrumentation. Engineered with Class 3A UNF fine threads, these screws provide superior clamping force in thin materials and delicate assemblies where coarse threads might compromise integrity. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures reliable performance in high-stress applications while the black-oxide surface treatment resists corrosion in industrial settings. Ideal for precision equipment, electronic enclosures, and machinery requiring secure, vibration-resistant fastening solutions.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread fit tolerances with UNF 0-80 fine threading and fully threaded design. These socket head cap screws conform to ASME B18.3 specifications and ASTM A574 material standards. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The standard socket head profile with 0.050" hex drive provides consistent tool engagement across installations.
