S-90807A119 1/4"-20 Shoulder Screws
Shoulder 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
- Exceptional durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in high-stress applications
- Superior corrosion resistance thanks to the black oxide finish that protects against rust and extends service life
- Precision alignment ensured by the 2" shoulder with tight diameter tolerance for accurate component positioning
- Secure installation facilitated by the knurled socket head and 1/8" hex drive for non-slip torque application
- Optimal thread engagement with Class 3A UNC coarse threads providing superior fit and vibration resistance
- Versatile compatibility with standard 1/4"-20 UNC threading for easy integration into existing assemblies
- Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and high strength are paramount. The 2" shoulder length with controlled diameter tolerance provides exact component spacing in machinery, automation systems, and precision instruments. The black oxide finish offers enhanced corrosion protection in demanding environments while maintaining dimensional stability. With 140,000 psi tensile strength and Class 3A UNC threads, this socket head shoulder screw ensures secure fastening in high-vibration applications, preventing loosening and maintaining assembly integrity. The knurled head texture combined with hex drive allows for positive tool engagement during installation, reducing the risk of stripped drives in critical industrial applications.
Specification Summary & Compliance
This precision shoulder screw features 1/4"-20 UNC Class 3A threads with coarse thread spacing for optimal engagement. The shoulder maintains tight dimensional control with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Manufactured from alloy steel with black oxide finish, the screw complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while meeting industrial standards for precision fasteners.
