S-97345A153 4-40 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 in harsh environments due to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
- Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for reliable, high-stress load-bearing.
- Precise Class 3A thread fit ensures tight, secure mating with components, reducing the risk of loosening under vibration.
- Easy installation and removal with a 5/64" hex socket drive and knurled head for enhanced grip and tool engagement.
- Durable, long-lasting performance supported by Rockwell B79 hardness, resisting wear and deformation in repetitive use.
- Broad compatibility with 4-40 UNC coarse threads and standard shoulder dimensions, fitting common industrial assemblies.
- Compliance with strict regulations including RoHS 3 and REACH, ensuring safety and environmental standards for global markets.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and corrosive settings. Its Class 3A thread fit and UNC coarse threads provide reliable fastening with minimal backlash, essential for maintaining alignment in rotating parts like bearings, pulleys, and linkages. The hex socket drive and knurled head facilitate quick assembly in tight spaces, reducing installation time and tool slippage. With high tensile and shear strength, it withstands dynamic loads in robotics, aerospace, and medical equipment, while the corrosion-resistant material ensures longevity in humid or chemical-exposed environments, minimizing maintenance and replacement costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise dimensional accuracy, including a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for industrial applications requiring stringent regulatory adherence.
