DTI Flat Washers are precision-manufactured components designed to help confirm proper bolt tension during structural steel installations. These washers are critical in high-strength bolted connections where safety, compliance, and structural integrity are non-negotiable.

Each washer includes direct tension indicators that compress in a controlled manner as the bolt is tightened. This tactile feedback gives installers immediate visual confirmation that the proper preload has been achieved—without relying on torque alone. Whether you're working on bridges, buildings, or infrastructure projects, these washers are engineered to meet ASTM F959 standards and support critical tension verification in the field.

Made from durable, heat-treated steel, and offered in multiple sizes to fit a wide range of structural bolts, DTI washers are suitable for both new construction and retrofits. Their plain finish offers a clean, functional appearance and is ideal for applications where corrosion resistance is handled separately or is not a concern.

Key Features:

• Direct Tension Indication: Raised protrusions compress under load to verify bolt tension.
• Reliable Installation Feedback: Reduces reliance on torque methods and ensures field accuracy.
• Plain Finish: Clean, bare steel ideal for interior use or environments where protective coatings are not required.
• Multiple Size Options: Available for a range of bolt diameters to meet job-specific needs.
• Meets ASTM F959 Standards: Trusted quality for critical structural connections.

Applications:

• Structural steel erection
• Bridge construction
• Industrial buildings
• Tower and infrastructure connections

Installation:

1. Place the DTI washer beneath the bolt head or nut (depending on direction of tensioning).
2. Tighten the bolt until the protrusions compress to the required gap—usually checked with a feeler gauge.
3. Confirm tension has been achieved across all connections before final inspection.