S-91259A103 10-24 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 load-bearing capacity with 140,000 psi tensile strength and 84,000 psi shear strength for reliable performance in demanding applications.
- Superior wear and corrosion resistance from the black oxide finish, extending service life in harsh industrial environments.
- Precise alignment and secure positioning ensured by the 2" shoulder with standard fit and tight diameter tolerance.
- High-strength alloy steel construction with Rockwell C32 hardness for excellent durability and resistance to deformation.
- Secure, non-slip installation provided by the knurled socket head and 1/8" hex drive, preventing tool slippage.
- Reliable thread engagement with Class 3A fit and coarse UNC threads for quick assembly and vibration resistance.
- Broad industry compliance meeting ASME B18.3, ASTM A574, RoHS 3, and REACH standards for quality and safety assurance.
Professional Applications & Engineering Value
This 10-24 UNC shoulder screw is engineered to address critical alignment and high-stress challenges in industrial assemblies. The alloy steel core, hardened to Rockwell C32, provides the structural integrity needed for heavy-duty applications like machinery, automotive components, and precision equipment. The 2" shoulder length with controlled tolerances ensures accurate part positioning, eliminating misalignment issues that can lead to premature wear. The black oxide finish enhances corrosion resistance, making it suitable for environments exposed to moisture or chemicals. Combined with the knurled socket head and Class 3A thread fit, this screw delivers secure, vibration-resistant fastening that maintains integrity under dynamic loads, reducing maintenance needs and improving operational reliability.
Specification Summary & Compliance
This shoulder screw features precise dimensional control, including a Class 3A thread fit for superior engagement and a shoulder diameter tolerance of -0.004" to -0.002". It adheres to ASME B18.3 and ASTM A574 manufacturing specifications, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industries without hazardous substances.