S-90324A152 3/8"-16 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
- Exceptional thread engagement and reliability due to the Class 3A thread fit, minimizing the risk of loosening under vibration.
- Enhanced grip and non-slip installation provided by the knurled socket head and 1/4" hex drive, even with gloved hands.
- High mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness for demanding applications.
- Reliable left-hand thread design for specialized assemblies where standard right-hand threads would unscrew.
- Precision shoulder alignment with a 1/2" diameter shoulder for accurate component positioning and pivoting.
- Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
This left-hand thread shoulder screw is engineered to solve critical challenges in mechanical assemblies subject to counter-clockwise rotational forces. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for industrial applications in food processing, marine, and chemical environments. The coarse UNC thread and Class 3A fit ensure a secure, tight connection that resists vibration-induced loosening, while the precision 1/2" shoulder diameter acts as a reliable axle or pivot point in machinery, reducing wear on connected components. The knurled socket head with a 1/4" hex drive allows for high-torque installation, ensuring the screw remains firmly in place even under high stress.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for superior precision and engagement. The shoulder diameter is manufactured to a tight tolerance of -0.004" to -0.002", ensuring consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing the absence of hazardous substances and supporting environmentally responsible manufacturing practices.
