Carbon Steel Dti Washer 30-45mm 20-30mm, 10-20mm

A DTI washer (Direct Tension Indicating Washer) is a special type of washer used in bolted connections to provide a visual indication of the tension or preload applied to a fastener. It helps ensure that the correct torque or tension is achieved during installation and can be used to prevent under-tightening or over-tightening of bolts.

1. Tension Indication:

   • DTI washers have a series of dimples, grooves, or protrusions on the surface. When the bolt is tightened, these dimples deform, and this deformation provides a visual indicator of how much tension has been applied to the fastener.

2. Simple Visual Check:

   • The DTI washer works by providing a clear visual signal. When the washer is properly tightened, the dimples or protrusions on the washer flatten, making it easy for a technician or inspector to verify if the correct amount of tension has been achieved.

3. Preload and Torque Control:

   • By monitoring the deformation of the washer, it helps ensure that a specific preload has been reached, which is critical for bolted joints, especially in structural applications like bridges, buildings, and heavy equipment.

4. Standardization:

   • DTI washers are often manufactured according to industry standards, such as ISO 16047 or ASTM F959, ensuring they meet certain performance specifications.

1. Structural Steel Connections:

   • DTI washers are commonly used in structural steel connections, particularly in the construction of buildings, bridges, and other heavy structures. Proper bolt tension is critical to ensuring the strength and stability of these connections.

2. Mechanical and Industrial Equipment:

   • In machinery and industrial applications, DTI washers help monitor bolt tension in critical assemblies, ensuring safe and reliable operation under heavy loads or dynamic conditions.

3. Transportation and Vehicles:

   • DTI washers can also be used in the automotive and aerospace industries, where ensuring precise bolt tension is vital for safety and performance.

4. Pre-stressed Concrete:

   • In pre-stressed concrete applications, where high bolt tension is required, DTI washers are used to ensure the proper tension is applied to the steel reinforcement.

1. Accuracy:

   • DTI washers provide a direct, visual indication of the tension applied to the fastener, making it easier to achieve the correct tension without relying solely on torque settings.

2. Cost-Effective:

   • They offer a cost-effective method of monitoring bolt tension, as they don’t require specialized tools like a torque wrench or tension gauge. Instead, an inspector can visually check the washer for deformation.

3. Ease of Use:

   • DTI washers are simple to install and use, making them a popular choice for bolted connections in many industries.

4. Helps Prevent Over-tightening or Under-tightening:

   • By providing a clear visual indication of the applied tension, DTI washers help to avoid over-tightening (which could lead to bolt failure) or under-tightening (which could result in a loose connection).

• Installation:

  • A DTI washer is placed under the bolt's nut or head during installation.

• Tightening:

  • As the bolt or nut is tightened, the dimples or raised portions of the washer begin to flatten.

• Indication:

  • The deformation of the washer provides a clear indication of the tension or load applied to the fastener. When the washer has been deformed to the proper level, it confirms that the correct tension has been