S-91273A674 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
- Exceptional corrosion resistance with 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments
- Precise component alignment thanks to the 3" shoulder with tight ±0.005" length tolerance for reliable assembly
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure and easy installation using the hex drive socket head and knurled texture for improved grip
- Durable coarse UNC threading (1/2"-13) with Class 2A fit ensures consistent engagement and vibration resistance
- Compliance with environmental standards including RoHS 3 and REACH for safe, sustainable use
- Versatile mechanical fastening suitable for pivots, axles, and spacers in machinery and equipment
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. The 3" shoulder length with minimal tolerance (±0.005") provides a stable bearing surface for rotating parts, reducing wear and misalignment in assemblies such as conveyor systems, robotic arms, and precision machinery. The black oxide finish enhances corrosion resistance, extending service life in humid or chemically exposed environments. Combined with a 1/2"-13 UNC coarse thread and Class 2A fit, it ensures quick, secure fastening even under high vibration, making it ideal for heavy-duty mechanical fasteners in automotive, aerospace, and manufacturing applications where reliability is paramount.
Specification Summary & Compliance
This shoulder screw features a 1/2"-13 UNC coarse thread with Class 2A dimensional accuracy for consistent fit. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and the shoulder length is 3" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
