S-94731A680 1/4"-20 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 corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Precise Class 2A thread fit guarantees smooth assembly and consistent clamping force
- Coarse UNC threading enables quick installation and reduced cross-threading risk
- Durable Rockwell B55 hardness provides excellent wear resistance for extended service life
- Generous 1-1/2" shoulder length offers superior alignment and pivot point stability
- External hex drive design allows for high-torque installation with standard tools
Professional Applications & Engineering Value
This precision shoulder screw delivers critical engineering solutions across industrial applications where alignment accuracy and rotational movement are paramount. The 18-8 stainless steel construction provides superior corrosion resistance for machinery operating in demanding environments, while the UNC coarse thread design ensures rapid assembly in production settings. The extended 1-1/2" shoulder length serves as an exact pivot point in rotating assemblies, preventing component misalignment in conveyor systems, robotic arms, and precision instruments. With 70,000 psi tensile strength and Rockwell B55 hardness, this fastener maintains dimensional stability under continuous operational stress, making it ideal for heavy-duty manufacturing equipment, automotive jigs, and material handling systems requiring reliable rotational guidance.
Specification Summary & Compliance
This shoulder screw features precision Class 2A thread fit with 1/4"-20 UNC coarse threads and maintains tight shoulder diameter tolerance of -0.004" to 0" with shoulder length tolerance of -0.005" to 0.005". Manufactured to industry standards with 70,000 psi tensile strength and 35,000 psi minimum shear strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
