S-92944A132 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
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for heavy-duty applications
- Precise alignment and reduced wear thanks to the 3/8" shoulder diameter with tight manufacturing tolerances
- Reliable thread engagement with Class 3A fit and UNC coarse threads for secure fastening in various materials
- Easy installation and removal using a standard 7/32" hex drive, reducing assembly time
- Consistent performance ensured by Rockwell B55 hardness for long-term durability
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical alignment and durability challenges in precision machinery and industrial assemblies. The 5/16"-18 UNC coarse thread and Class 3A thread fit provide reliable fastening in metal, plastic, and composite materials, reducing the risk of loosening under vibration. The 3/8" shoulder diameter with tight tolerances ensures accurate component positioning, minimizing misalignment and wear in rotating parts, pivots, and guides. With a flat head and hex drive, it offers flush mounting and easy access in confined spaces. The high tensile and shear strength, combined with corrosion-resistant properties, makes it ideal for automotive, aerospace, and manufacturing equipment where precision and longevity are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise tolerance. Key dimensions include a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002") and shoulder length of 5/8" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial applications.
