Crucial Clarifications on Product Specifications

The product page contains generic data that requires clarification for an accurate understanding of this specific product set:

• Product Type: This is a fastener set or kit, not just a standalone bolt. It includes the hex bolt, a hex nut, and a spring washer, as described in the product title and introduction.
• Material: The product is made from Carbon Steel. The white zinc plating is a protective surface finish. The mention of “Stainless Steel” in the material list is a template error, as stainless steel is inherently corrosion-resistant and is not zinc-plated.
• Grade (Strength Class): The applicable property classes for this carbon steel bolt set are 4.8, 8.8, 10.9, and 12.9. These numbers denote the mechanical strength. The listed stainless steel grades (A2-70, A4-70, etc.) are not relevant to this carbon steel product.
• Threading: The title specifies a “Full Thread Standard Hex Bolt,” which corresponds to the DIN 933 standard for metric bolts.

Product Parameters

Components of the Set

1. Fully Threaded Hex Bolt (DIN 933): A carbon steel bolt with a hexagonal head and threads running its entire length. The full threading provides maximum engagement in tapped holes or with the nut.
2. Hex Nut (DIN 934): A standard hexagonal nut with threads that perfectly match the bolt.
3. Spring Washer (Lock Washer): This crucial component is placed between the nut and the fastened surface. When tightened, it flattens and exerts a spring force, creating tension that prevents the nut from loosening due to vibration or thermal expansion/contraction.

Carbon Steel Strength Grades Explained

Choosing the correct grade is essential for safety and performance:

• Grade 4.8: Low-strength carbon steel. Suitable for light-duty applications with minimal load.
• Grade 8.8: Medium-to-high strength. The most common grade for automotive, machinery, and structural applications requiring reliable strength.
• Grade 10.9: High strength. Used in applications demanding high clamping force and load-bearing capacity, such as engine blocks and critical structural joints.
• Grade 12.9: Very high strength. Reserved for the most demanding, high-stress applications where fastener failure is not an option.

Key Features

• Complete Fastening Solution: The pre-packaged set of bolt, nut, and washer simplifies purchasing and ensures component compatibility.
• Vibration Resistance: The included spring washer provides active resistance against loosening, making the set ideal for dynamic environments like engines and machinery.
• Customizable Length: The ability to specify custom lengths allows for perfect fitment in specialized applications.
• Standard Corrosion Protection: The white zinc plating offers a clean finish and protects against rust in dry or low-moisture conditions.
• Multiple Strength Options: Available in a range of grades from 4.8 to 12.9 to meet diverse load requirements.

Installation Guidelines

1. Insert the hex bolt through the pre-drilled holes of the components to be joined.
2. On the threaded end of the bolt, place the spring washer first, followed by the hex nut. The spring washer should be positioned between the nut and the surface of the part being fastened.
3. Use a correctly sized wrench or socket to tighten the nut while holding the bolt head stationary if necessary.
4. As you tighten, the spring washer will compress, creating the locking tension. Tighten to the appropriate torque specification for the bolt size and grade to ensure a secure, long-lasting connection.