S-97345A658 3/8"-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 with 316 stainless steel construction, ideal for harsh industrial and marine environments.
- High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing in critical assemblies.
- Precise thread engagement with Class 3A UNF fine threads ensuring tight, secure fits and reduced risk of loosening under vibration.
- Easy installation and removal using the hex socket drive and knurled head, providing excellent grip and torque application without slippage.
- Accurate component alignment due to the 1/2" shoulder with tight diameter and length tolerances, minimizing play in rotating parts.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.
- Durable and long-lasting with Rockwell B79 hardness, maintaining integrity under repeated use and mechanical stress.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and corrosion-induced failure. The UNF fine thread with Class 3A fit provides superior holding power in applications like rotating shafts, bearings, and linkages, where vibration resistance is critical. The 1/2" shoulder length and precise tolerances ensure consistent spacing and alignment, reducing wear and maintenance needs. With its hex socket drive and knurled head, it allows for easy installation in confined spaces, making it ideal for industrial equipment, automotive assemblies, and electronic enclosures that demand reliability and corrosion resistance.
Specification Summary & Compliance
This shoulder screw adheres to tight dimensional standards, including a Class 3A thread fit for high precision and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets rigorous safety and environmental regulations for industrial use.
