S-91054A380 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
- Extended service life thanks to TiCN coating that provides superior wear and corrosion resistance in demanding environments
- Reliable high-strength performance with a 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Precise component alignment enabled by the accurately machined 3/8" shoulder diameter with tight tolerances for minimal play
- Secure and stable fastening from the Class 2A thread fit and coarse UNC thread design, resisting loosening under vibration
- Easy installation and maintenance with a standard hex socket head requiring only a 3/16" drive for quick assembly
- Corrosion-resistant durability from 18-8 stainless steel construction, suitable for various industrial conditions
- Global compliance assurance meeting RoHS 3 and REACH regulations for safe use in international markets
Professional Applications & Engineering Value
This precision shoulder screw is engineered to solve critical alignment and wear challenges in industrial machinery. The TiCN coated 18-8 stainless steel construction provides exceptional surface hardness, significantly reducing galling and wear in high-cycle applications like rotating shafts, pivoting mechanisms, and precision guides. The 3/8" shoulder diameter with precise tolerances ensures exact component positioning, eliminating misalignment in assemblies while the 5/16"-18 UNC coarse threads offer rapid installation and vibration resistance. With its 70,000 psi tensile strength and corrosion-resistant properties, this socket head shoulder screw delivers long-term reliability in automotive fixtures, packaging equipment, and material handling systems where dimensional stability under load is paramount.
Specification Summary & Compliance
This shoulder screw maintains Class 2A thread fit per UNC standards with precise shoulder diameter tolerance of -0.002" to 0" and shoulder length tolerance of 0" to 0.003". Manufactured from 18-8 stainless steel with TiCN coating, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and international market acceptance.
