S-97345A654 5/16"-18 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 industrial environments and extended service life.
- High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing in demanding applications.
- Precise Class 3A thread fit ensures secure, vibration-resistant assemblies with minimal backlash and improved operational accuracy.
- Enhanced installation grip from the knurled hex socket head, allowing for high-torque application without slippage.
- Robust shoulder design with a 3/8" diameter and 13/16" length for accurate component alignment and spacing.
- Industry-standard compliance with ASME B18.3, RoHS, and REACH, guaranteeing quality, safety, and environmental responsibility.
- Coarse UNC threading for faster assembly and reduced cross-threading risks, boosting production efficiency.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The Class 3A thread fit and coarse 5/16"-18 UNC thread provide exceptional vibration resistance and ease of installation, reducing assembly time and maintenance needs. The knurled hex socket head ensures a firm grip even in high-torque scenarios, preventing tool slippage and damage. With a Rockwell B79 hardness and excellent corrosion resistance, it performs reliably in moist, chemical, or high-stress environments, making it ideal for pivots, guides, and rotating assemblies where alignment and durability are paramount. Its compliance with ASME B18.3 standards assures consistent quality and interchangeability.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with precise tolerances (shoulder diameter: -0.004" to -0.002", shoulder length: -0.005" to 0.005") and adheres to ASME B18.3 manufacturing specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.
