S-98930A332 M12 x 40 mm ISO 8678 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
- Non-rotating installation ensured by the square neck design, preventing bolt spin during tightening and maintaining secure fastening
- High tensile strength of 110,000 PSI (Class 8.8) for reliable performance in heavy-duty applications
- Excellent hardness (Rockwell C22) provides durability and resistance to wear and deformation under load
- Full threading allows for maximum adjustability and secure fastening across the entire bolt length
- Precise metric coarse threading (M12 x 1.75mm, Class 6g fit) ensures compatibility and easy assembly with standard metric nuts
- Wide rounded head distributes clamping force evenly, reducing surface damage and improving joint integrity
Professional Applications & Engineering Value
These M12 carriage bolts are engineered to solve critical fastening challenges in demanding industrial settings. The zinc yellow-chromate plated steel construction provides exceptional corrosion resistance, making them ideal for outdoor machinery, agricultural equipment, and structural assemblies exposed to moisture. The square neck design prevents rotation during installation, eliminating the need for secondary locking mechanisms and speeding up assembly in automotive frames, conveyor systems, and construction projects. With fully threaded metric coarse threading and Class 8.8 strength, these bolts deliver reliable, vibration-resistant connections that maintain integrity under heavy loads and dynamic stresses, reducing maintenance downtime and ensuring long-term operational safety.
Specification Summary & Compliance
This carriage bolt features precise metric threading (M12 x 1.75mm) with a Class 6g thread fit for consistent engagement. Manufactured to meet ISO 8678 specifications, it ensures dimensional accuracy and performance reliability. The Class 8.8 strength grade corresponds to a tensile strength of 110,000 PSI, with material hardness of Rockwell C22. Compliant with RoHS and REACH environmental standards, this bolt is suitable for global industrial applications requiring certified quality and durability.
