S-90807A143 1/2"-13 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional durability with 140,000 PSI tensile strength and Rockwell C32 hardness, ensuring reliable performance in high-stress industrial environments.
- Superior corrosion resistance thanks to the black oxide finish, extending service life in demanding conditions.
- Precise alignment and reduced wear with a standard shoulder diameter of 1/2" and controlled tolerances, ideal for pivot points and rotating assemblies.
- Easy installation and removal featuring a knurled socket head with 1/4" hex drive for secure tool grip and efficient assembly.
- Optimized thread engagement with UNC coarse threads and Class 3A fit, providing strong, vibration-resistant fastening.
- Versatile right-hand threading for standard applications, ensuring compatibility with common machinery and components.
- Compliance with environmental standards including RoHS 3 and REACH, making it suitable for regulated industries and global supply chains.
Professional Applications & Engineering Value
This alloy steel shoulder screw is engineered to address critical challenges in industrial applications such as machinery assembly, automotive systems, and precision equipment. The black oxide finish provides a protective layer against rust and corrosion, essential for environments exposed to moisture or chemicals. With a 1/2" shoulder diameter and precise length tolerances, it ensures accurate component alignment, reducing misalignment and wear in rotating parts like bearings or linkages. The UNC coarse threads and Class 3A thread fit deliver high clamping force and resistance to loosening under vibration, while the knurled socket head allows for quick, tool-safe installation. Ideal for high tensile strength requirements, this screw supports durable, long-term performance in demanding B2B settings.
Specification Summary & Compliance
This shoulder screw adheres to Class 3A thread fit for precise UNC threading, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" to ensure dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances and suitable for environmentally conscious industrial use.
