S-94361A333 1/4"-28 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 load-bearing capacity with 140,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance thanks to black oxide finish that protects against rust and extends service life
- Precise thread engagement with Class 3A fine thread fit ensuring vibration resistance and secure fastening
- Enhanced durability from Rockwell C32 hardness providing excellent wear resistance in demanding environments
- Easy installation and removal with knurled socket head and 5/32" hex drive for superior torque transmission
- Accurate shoulder positioning with tight diameter tolerance (-0.004" to -0.002") for precise component alignment
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe industrial use
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions for precision machinery and industrial equipment. The Class 3A UNF fine thread provides superior vibration resistance in rotating assemblies, while the black oxide finish offers essential corrosion protection in harsh operating environments. The precisely machined shoulder diameter with tight tolerance ensures accurate alignment in bearing mounts, pivot points, and mechanical linkages. With 140,000 psi tensile strength and Rockwell C32 hardness, this component withstands heavy cyclic loading in automation systems, manufacturing equipment, and precision instruments. The knurled socket head with hex drive facilitates secure installation in confined spaces, making it ideal for maintenance-critical applications where reliability is paramount.
Specification Summary & Compliance
This precision shoulder screw features Class 3A thread fit with UNF fine thread specification (1/4"-28) and maintains tight shoulder diameter tolerance (-0.004" to -0.002") for precise applications. Manufactured to industrial standards with black oxide finish for corrosion resistance, the component is RoHS 3 (2015/863/EU) compliant with exemption 6(a) and REACH (EC 1907/2006) compliant per the latest substance regulations, ensuring environmental responsibility in industrial supply chains.
