S-97345A533 1/4"-20 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 environments and extended service life.
- High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for demanding mechanical applications.
- Precise Class 3A thread fit ensures reliable engagement and vibration resistance in assembled components.
- Easy installation and removal with a 5/32" hex socket drive and knurled head for improved grip and torque application.
- Durable shoulder design with controlled tolerances provides accurate alignment and acts as a bearing surface or pivot.
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and regulatory safety.
- Coarse UNC threading enables quick assembly and disassembly, reducing installation time in industrial settings.
Professional Applications & Engineering Value
This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery and industrial equipment. The Class 3A thread fit and UNC coarse threads provide secure fastening with high resistance to loosening under vibration, making it ideal for rotating assemblies, linkages, and pivoting mechanisms. The knurled head and hex socket drive allow for efficient torque transmission in confined spaces, while the precisely machined shoulder ensures accurate component spacing and alignment. With excellent corrosion resistance and high tensile strength, this screw is a reliable choice for applications in marine, chemical processing, and automotive industries, where durability and performance under stress are paramount.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy. Threads are 1/4"-20 UNC coarse type, right-hand direction, ensuring standard compatibility. Shoulder diameter and length tolerances are tightly controlled for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industrial and international markets.
