S-98256A303 10-24 ASME B18.3 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 from Grade 2 Titanium construction, ideal for harsh environments and reducing replacement frequency
- Exceptional strength-to-weight ratio with 40,000 psi tensile strength, providing reliable performance without adding bulk
- Precision alignment and pivot points ensured by the 1/2" shoulder with tight tolerances for consistent assembly
- Secure, high-torque installation enabled by the 1/8" hex socket drive and knurled head for improved grip
- Reliable thread engagement with Class 3A fit UNC coarse threads, minimizing cross-threading and ensuring vibration resistance
- Long-term durability supported by Rockwell B80 hardness, maintaining integrity under repeated stress
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance
Professional Applications & Engineering Value
This Grade 2 Titanium shoulder screw is engineered to address common industrial challenges such as component misalignment, corrosion-induced failure, and weight-sensitive designs. The precision shoulder with controlled diameter and length tolerances acts as a reliable locating dowel or pivot in assemblies, reducing wear on mating parts. Its 10-24 UNC coarse thread and Class 3A fit provide quick assembly and high resistance to loosening in vibrating environments, making it ideal for machinery, aerospace, and medical equipment. The titanium material offers excellent strength and corrosion resistance, extending service life in demanding applications while complying with RoHS 3 and REACH regulations for global use.
Specification Summary & Compliance
This shoulder screw features a 10-24 UNC thread with Class 3A fit for precise engagement, a shoulder diameter of 1/4" with tolerance of -0.004" to -0.002", and shoulder length of 1/2" with tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional consistency and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety standards.
