S-92981A797 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
- Exceptional corrosion resistance with black oxide finish, ideal for harsh industrial environments and reducing maintenance needs.
- High tensile strength of 140,000 psi ensures reliable performance under heavy loads and mechanical stress.
- Precision Class 5g6g thread fit provides smooth, secure fastening with minimal risk of cross-threading or loosening.
- Durable alloy steel construction with Rockwell C32 hardness offers long-lasting wear resistance and durability.
- 130mm shoulder length with tight tolerances enables accurate alignment and spacing in assemblies, reducing assembly time.
- Knurled hex socket head allows for easy, non-slip installation and removal with standard tools.
- Compliance with ASTM A108, RoHS 3, and REACH ensures material quality and environmental safety for global applications.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and corrosion in machinery. Made from alloy steel with a black oxide finish, it provides superior protection against rust and wear, extending service life in demanding settings like automotive assemblies, conveyor systems, and precision equipment. The coarse pitch thread (1.25mm) and Class 5g6g fit ensure quick, reliable fastening, while the 130mm shoulder acts as a precise pivot or spacer, reducing the need for additional components. Ideal for applications requiring high strength and dimensional accuracy, this metric shoulder screw enhances assembly efficiency and reduces downtime in industrial environments.
Specification Summary & Compliance
This shoulder screw features a metric thread (M8x1.25) with Class 5g6g thread fit for precise tolerance, a shoulder diameter of 10 mm with tolerance from -0.072 to -0.01 mm, and shoulder length of 130 mm with tolerance from 0 to 0.25 mm. It meets ASTM A108 specifications for material quality, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory adherence.
