S-91264A722 1/2"-13 ASME B18.3, ASTM A574 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 holding power with 140,000 psi tensile strength and 84,000 psi minimum shear strength, ideal for high-stress industrial applications.
- Vibration-resistant fastening thanks to the integrated nylon pellet thread locker, maintaining clamp load from -50° to 250°F.
- Precise component alignment and smooth rotation enabled by the 5/8" shoulder diameter with tight tolerance control.
- Corrosion-resistant black oxide finish on alloy steel enhances durability and provides a professional appearance in demanding environments.
- Easy installation and high torque capability with the hex socket drive and knurled head for superior grip.
- Reliable thread engagement with Class 3A fit and 1/2"-13 UNC coarse threads, ensuring consistent performance and interchangeability.
- Compliance with major industry standards including ASME B18.3 and ASTM A574, guaranteeing quality and safety.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical challenges in machinery assembly, robotics, and precision equipment. The alloy steel construction, combined with a black oxide finish, provides excellent resistance to wear and environmental factors, reducing maintenance needs. The UNC coarse threads and Class 3A fit ensure rapid assembly and reliable fastening in high-vibration settings, while the integrated nylon pellet thread locker prevents loosening under dynamic loads. Its 5/8" shoulder diameter and 3/4" shoulder length offer precise locating and bearing surfaces, making it ideal for pivots, axles, and spacers in automotive, aerospace, and industrial automation applications.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with 1/2"-13 UNC coarse threads and a shoulder diameter tolerance of -0.004" to -0.002". It is manufactured in accordance with ASME B18.3 and ASTM A574 specifications, ensuring dimensional accuracy and mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting sustainable and safe manufacturing practices.
