S-92981A775 M2 ASTM A108 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
- Superior corrosion resistance with a durable black oxide finish, extending service life in harsh industrial environments.
- Precise component alignment ensured by the 25mm shoulder with controlled tolerances, reducing assembly errors and wear.
- High-strength fastening from alloy steel construction and 140,000 psi tensile strength, providing reliable performance under load.
- Secure, slip-resistant installation with a knurled socket head and 1.5mm hex drive, allowing for high torque application.
- Consistent thread engagement due to Class 5g6g thread fit and coarse 0.4mm pitch, enabling quick and stable assembly.
- Enhanced durability from Rockwell C32 hardness, resisting deformation and maintaining integrity through repeated use.
- Compliance with international standards including ASTM A108, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
Professional Applications & Engineering Value
This M2 shoulder screw is engineered to address critical alignment and strength requirements in precision assemblies. The 25mm shoulder length with minimal tolerance provides an exact locating diameter, eliminating misalignment in machinery, automotive, and electronics applications. Made from alloy steel and finished with black oxide, it combats corrosion and wear, while the hex socket drive and knurled head ensure secure handling during installation. The coarse thread pitch and Class 5g6g thread fit facilitate rapid assembly with high vibration resistance, reducing maintenance needs and improving overall equipment reliability in demanding industrial settings.
Specification Summary & Compliance
The screw features a Class 5g6g thread fit per metric standards, with a shoulder diameter tolerance of -0.072 to -0.01 mm and length tolerance of 0 to 0.25 mm for precise dimensional control. It is manufactured in compliance with ASTM A108 specifications and adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for global supply chains.
