S-97345A207 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 mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads.
- Precise Class 3A thread fit ensures secure, vibration-resistant assemblies with minimal play.
- Convenient hex socket drive with a 5/32" hex key for easy installation and removal in confined spaces.
- Knurled head texture provides enhanced grip for manual adjustments and handling.
- Standard UNC coarse thread (1/4"-20) enables quick assembly and disassembly.
- Durable shoulder design with a 5/16" diameter and 1 1/8" length for precise component location and rotation.
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw is engineered to address critical challenges in industrial assembly, such as component alignment and corrosion-induced failure. The UNC coarse thread and Class 3A fit provide a secure, vibration-resistant connection, reducing maintenance needs in machinery, automation systems, and precision equipment. The knurled head and hex socket drive facilitate easy installation and adjustment, while the robust shoulder acts as a precise axle or pivot point, eliminating the need for additional bushings. Its high tensile strength and corrosion resistance make it suitable for demanding applications in marine, chemical processing, and food-grade environments, ensuring long-term reliability and reduced downtime.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC coarse thread with a Class 3A fit for high precision. The shoulder diameter is 5/16" with a tolerance of -0.004" to -0.002", and the shoulder length is 1 1/8" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for global industrial use.
