S-91273A237 1/2"-13 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 with 70,000 psi tensile and 35,000 psi shear capacity for heavy-duty applications
- Precise alignment and stability thanks to the 3 1/2" shoulder with tight tolerances and standard fit
- Easy installation and removal with 1/4" hex drive and knurled head for secure tool grip
- Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening
- Long-lasting durability backed by Rockwell B55 hardness for wear resistance
- Compliance with global standards including RoHS 3 and REACH for safe industrial use
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and load-bearing challenges in demanding industrial settings. Its 3 1/2" precision shoulder with minimal diameter and length tolerances ensures exact component positioning in machinery, reducing vibration and misalignment issues. The 1/2"-13 UNC coarse thread with Class 2A fit provides rapid assembly and high resistance to loosening under dynamic loads. Combined with a 1/4" hex drive and knurled head, it offers secure tool engagement for efficient maintenance in confined spaces. Ideal for pivots, axles, and guides in automotive, manufacturing, and automation systems, this shoulder bolt delivers reliable performance where precision and strength are paramount.
Specification Summary & Compliance
This shoulder screw features a 1/2"-13 UNC thread with Class 2A dimensional accuracy, ensuring consistent fit. The shoulder diameter tolerance is -0.004" to -0.002", and length tolerance is -0.005" to 0.005" for precise engineering applications. Manufactured from 18-8 stainless steel with a hardness of Rockwell B55, it meets mechanical requirements including 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible industrial use.
