S-97345A835 1/2"-13 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 with 316 stainless steel construction, ideal for harsh chemical and marine environments
- High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding industrial applications
- Precision Class 3A thread fit ensures secure, vibration-resistant connections with minimal backlash
- Knurled socket head design provides enhanced grip and prevents tool slippage during installation
- Extended 3 3/4" shoulder length with tight tolerances enables precise component alignment and rotational movement
- Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability
- RoHS 3 and REACH compliant for environmentally responsible manufacturing and global market acceptance
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers exceptional performance in precision machinery and industrial equipment where corrosion resistance and dimensional stability are critical. The 1/2"-13 UNC coarse thread configuration provides rapid assembly in high-vibration environments, while the Class 3A thread fit maintains tight tolerances for secure fastening. The extended shoulder length with precise tolerances serves as an accurate pivot point or spacer in rotating assemblies, reducing wear and maintaining alignment in automation systems, conveyor equipment, and precision instruments. The knurled socket head combined with 5/16" hex drive ensures reliable torque transmission during installation, making it ideal for maintenance-critical applications where accessibility may be limited.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. The shoulder features tight tolerances with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring material safety and regulatory acceptance across global markets.
