S-92981A914 M8 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
- Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear in demanding industrial environments.
- Superior Tensile Strength: 140,000 psi tensile strength ensures reliable performance under high-stress conditions, reducing failure risks.
- Precision Shoulder Fit: 120mm shoulder with tight diameter tolerance (-0.072 to -0.01 mm) ensures accurate alignment and reduces component wear.
- Secure & Easy Installation: Knurled head and 5mm hex drive offer excellent grip and torque transmission, speeding up assembly.
- Consistent Thread Performance: Class 5g6g coarse thread (M8x1.25) provides reliable engagement and vibration resistance.
- High Material Hardness: Rockwell C32 hardness from alloy steel enhances wear resistance and longevity.
- Compliant & Safe: Meets ASTM A108, RoHS 3, and REACH standards, ensuring environmental and regulatory safety.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial applications. The alloy steel construction and black oxide finish deliver exceptional durability against corrosion and mechanical stress, making it ideal for machinery, automation systems, and precision equipment. The 120mm shoulder length provides a stable pivot or spacer, minimizing misalignment and reducing wear on moving parts. With a coarse thread and class 5g6g fit, it ensures quick, secure fastening even in high-vibration settings. This metric shoulder screw offers reliable performance in assembly lines, robotics, and heavy-duty frameworks, where precision and strength are non-negotiable.
Specification Summary & Compliance
The screw features a M8x1.25 coarse thread with Class 5g6g tolerance for precise fit, and shoulder diameter tolerance of -0.072 to -0.01 mm. It complies with ASTM A108 for material consistency, and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.
