S-90782A122 M8 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
- Enhanced corrosion resistance with a durable black oxide finish, extending service life in harsh industrial environments.
- Superior strength and durability from alloy steel construction, offering a high tensile strength of 140,000 psi for reliable load-bearing applications.
- Precise alignment and reduced wear due to exact shoulder diameter tolerance (-0.072 to -0.01 mm), ensuring smooth operation in assemblies.
- Easy installation and removal with a 4 mm hex socket drive and knurled head, providing a secure grip and minimizing tool slippage.
- Consistent thread performance with Class 6g fit and coarse 1.25 mm pitch, enabling quick assembly and strong fastening in metric systems.
- Rockwell C32 hardness for excellent wear resistance, maintaining integrity under repetitive stress and mechanical loads.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address critical challenges in precision machinery, automation, and assembly systems. The alloy steel material, combined with a black oxide finish, provides robust corrosion resistance, reducing maintenance needs in humid or chemically exposed settings. The hex socket head and knurled texture facilitate easy handling and torque application, minimizing installation errors. With a Class 6g thread fit and controlled shoulder dimensions, it ensures accurate positioning and reduced vibration in applications like rotating shafts, bearings, and linkages. This design enhances operational reliability, making it ideal for industries requiring high-strength, metric thread fasteners that meet stringent RoHS and REACH compliance standards.
Specification Summary & Compliance
This shoulder screw features a metric M8x1.25 coarse thread with Class 6g tolerance for precise fit, and shoulder diameter tolerance of -0.072 to -0.01 mm with shoulder length tolerance of 0 to 0.25 mm. Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability.
