S-92944A131 5/16"-18 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 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications.
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high-stress conditions.
- Precise Class 3A thread fit for secure, vibration-resistant assemblies and reduced risk of loosening in machinery.
- Easy installation and removal with a 7/32" hex drive, allowing for high-torque application with standard tools.
- Accurate component alignment thanks to the 1/2" shoulder length with tight tolerances, minimizing play in pivots, gears, and linkages.
- Optimized for countersunk applications with an 82° flat head profile, providing a flush finish and improved aesthetics.
- Compliant with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated markets.
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to solve critical alignment and durability challenges in industrial machinery. The 5/16"-18 UNC coarse thread and Class 3A fit provide a secure, vibration-resistant fastening solution for moving parts, preventing premature wear in assemblies like rotating shafts, bearings, and linkages. The 1/2" shoulder length acts as a precise datum for components, eliminating misalignment and reducing stress concentrations. Made from corrosion-resistant stainless steel with a Rockwell B55 hardness, it withstands aggressive environments and repeated cycles, making it ideal for automotive, packaging, and conveyor systems where reliability is non-negotiable.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC coarse thread with a Class 3A thread fit for high precision. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/2" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial use.
