S-90807A149 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 tensile strength of 140,000 psi for reliable performance in high-stress applications
- Precision Class 3A thread fit ensures secure fastening with minimal backlash in assemblies
- Black oxide finish provides enhanced corrosion resistance for extended service life
- Knurled socket head with 1/4" hex drive allows for secure tool grip and easy installation
- 2" shoulder with tight diameter tolerance maintains accurate component alignment
- Alloy steel construction with Rockwell C32 hardness delivers superior durability and wear resistance
- Coarse UNC threads enable quick assembly and disassembly in industrial settings
Professional Applications & Engineering Value
This alloy steel shoulder screw with black oxide finish addresses critical alignment and durability challenges in precision machinery. The 2" shoulder length with controlled tolerances provides stable bearing surfaces for rotating components, while the Class 3A thread fit ensures vibration resistance in dynamic applications. The knurled socket head design prevents tool slippage during torque application, making it ideal for assembly lines and maintenance operations. With 140,000 psi tensile strength and Rockwell C32 hardness, this shoulder screw maintains dimensional stability under heavy loads, solving common failure points in industrial equipment, automotive fixtures, and manufacturing jigs where precision positioning is paramount.
Specification Summary & Compliance
This shoulder screw features 1/2"-13 UNC coarse threads with Class 3A fit per standard specifications, ensuring precise engagement. The shoulder diameter maintains -0.004" to -0.002" tolerance with shoulder length controlled within ±0.005" for consistent performance. Manufactured from alloy steel and finished with black oxide for corrosion protection, the product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting international standards for industrial components.
