S-90337A429 8-32 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 environments and extended service life.
- Exceptional alignment precision due to the precisely controlled shoulder diameter tolerance (-0.001" to 0") for reliable component positioning.
- High mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness, ensuring durability under load.
- Secure and reliable fastening provided by the Class 2A thread fit and coarse UNC thread spacing for efficient assembly.
- Space-saving low-profile socket head with a hex drive allows for installation in confined areas and provides a clean finish.
- Regulatory compliance assurance by meeting RoHS 3 and REACH standards, supporting global supply chain requirements.
- Versatile shoulder design with a 1-1/2" shoulder length acts as a precise pivot, axle, or spacer in mechanical assemblies.
Professional Applications & Engineering Value
This 8-32 UNC shoulder screw is engineered to solve critical alignment and durability challenges in industrial assemblies. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for applications exposed to moisture or chemicals, such as in food processing, marine, or outdoor equipment. The precise shoulder diameter and length provide a reliable bearing surface, ensuring components like gears, linkages, and pulleys rotate or slide without misalignment. The low-profile socket head with a hex drive allows for easy installation in tight spaces, while the Class 2A thread fit and coarse thread spacing enable quick, secure fastening, reducing assembly time and improving overall mechanical integrity in machinery and automation systems.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent performance. Key dimensional tolerances include a shoulder diameter of -0.001" to 0" and shoulder length of 0" to 0.002", ensuring high precision. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety regulations.
