S-92981A305 M8 ISO 7379 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 Durability: Alloy steel construction with Rockwell C32 hardness provides superior resistance to wear and deformation in demanding applications.
- Corrosion Resistance: Black oxide finish offers reliable protection against rust, extending service life in various industrial environments.
- Precise Alignment & Stability: 30 mm shoulder length with controlled tolerance ensures accurate component positioning and reduces assembly stress.
- High Load Capacity: 140,000 psi tensile strength and 84,000 psi shear strength support heavy-duty operations without failure.
- Secure Fastening: Class 5g6g thread fit and coarse 1.25 mm pitch enable quick, reliable installation with reduced risk of cross-threading.
- Easy Installation & Removal: Hex socket drive (5 mm) and knurled head design allow for firm tool grip and efficient torque application.
- Global Compliance: Meets ISO 7379, RoHS 3, and REACH standards, ensuring suitability for international industrial and engineering projects.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The alloy steel core, combined with a black oxide finish, provides exceptional strength and corrosion resistance, making it ideal for machinery, automotive, and automation systems where vibration and environmental factors are concerns. The 30 mm shoulder acts as a precise pivot or spacer, minimizing misalignment and distributing stress evenly across connected components. With a hex drive and knurled head, it ensures secure tool engagement during installation, reducing slippage in high-torque scenarios. By adhering to ISO 7379 and other international regulations, this screw delivers reliable performance in industrial applications requiring consistent dimensional accuracy and long-term durability.
Specification Summary & Compliance
This shoulder screw features an M8x1.25 metric thread with Class 5g6g tolerance for precise fit, a shoulder diameter of 10 mm (tolerance: -0.072 to -0.01 mm), and shoulder length of 30 mm (tolerance: 0 to 0.25 mm). It is manufactured in compliance with ISO 7379 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe and consistent quality for global industrial use.
