S-91273A727 1"-8 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
- Exceptional corrosion resistance and durability with 18-8 stainless steel construction, ideal for harsh industrial environments.
- Enhanced grip and reduced tool slippage thanks to the knurled head and 1/2" hex drive for secure, efficient installation.
- High tensile and shear strength (70,000 psi and 35,000 psi respectively) ensures reliable performance under heavy loads and stress.
- Precise Class 2A thread fit and 1"-8 UNC coarse threads for easy assembly and secure fastening in demanding applications.
- Improved wear resistance and reduced light reflection with the black oxide finish, extending service life in mechanical assemblies.
- Accurate shoulder diameter and length with tight tolerances for consistent alignment and spacing in precision machinery.
- Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory acceptance for global supply chains.
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial settings. The 1"-8 UNC coarse thread and Class 2A fit ensure quick, reliable assembly with minimal cross-threading risk, while the black oxide finish enhances corrosion resistance and reduces galling. With a 70,000 psi tensile strength and 35,000 psi shear strength, it provides robust support in rotating assemblies, pivoting joints, and machinery requiring precise shoulder fit. The knurled head and 1/2" hex drive offer superior torque transmission, making it ideal for automotive, aerospace, and heavy equipment applications where vibration resistance and durability are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder diameter (1") and length (1 1/2") maintain tight tolerances, ensuring reliable performance. It is manufactured from 18-8 stainless steel with a black oxide finish and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting safe and sustainable industrial use.
