S-97345A707 3/8"-16 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 and marine environments
- Precise component alignment ensured by the 1/2" shoulder diameter with tight tolerance for reduced assembly play
- High-strength performance delivering 70,000 psi tensile and 35,000 psi shear strength for demanding mechanical applications
- Reliable thread engagement with Class 3A UNC coarse threads providing superior fit and vibration resistance
- Secure installation and removal using the 1/4" hex socket drive, combined with a knurled head for enhanced grip
- Extended service life from Rockwell B79 hardness, maintaining dimensional stability under repeated use
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global supply chain compatibility
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 3/8"-16 UNC coarse thread with Class 3A fit ensures minimal backlash and reliable performance in high-vibration environments like robotics, conveyor systems, and automated machinery. The 1/2" shoulder diameter provides an exact pivot point or bearing surface, eliminating the need for additional spacers and reducing component count. With its hex socket drive and knurled head, installation is secure and tool-slip is minimized, crucial for maintenance efficiency. The 70,000 psi tensile strength and corrosion-resistant material make it suitable for food processing, chemical equipment, and outdoor applications where moisture and chemicals are present.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC coarse thread with Class 3A precision tolerance for tight fit. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and shoulder length is 3/4" with -0.005" to 0.005" tolerance. Manufactured in compliance with ASME B18.3 specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards.
