S-91273A672 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 black oxide finish on 18-8 stainless steel, ideal for harsh industrial environments
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Precise shoulder positioning with 2 1/2" shoulder length and tight tolerances for accurate component alignment
- Easy installation and removal thanks to the knurled socket head and hex drive design
- Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening in high-vibration settings
- Enhanced durability from Rockwell B55 hardness, resisting wear in repetitive assembly operations
- Compliance with global standards including RoHS 3 and REACH for safe use in regulated industries
Professional Applications & Engineering Value
This black oxide shoulder screw is engineered to address critical alignment and load distribution challenges in machinery and equipment. The 18-8 stainless steel construction, combined with a black oxide finish, provides excellent resistance to rust and corrosion, making it suitable for automotive, aerospace, and manufacturing environments. The 2 1/2" shoulder length allows for precise bearing or bushing placement, reducing component wear and ensuring smooth rotational movement. With a 1/2"-13 UNC thread and Class 2A fit, it offers reliable fastening in high-stress applications, while the knurled socket head facilitates quick tool engagement, streamlining assembly and maintenance processes in industrial settings.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent precision. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring exact dimensional control. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, guaranteeing environmental safety and regulatory adherence for global industrial use.
