What is A325 TC bolt?

What is A325 TC bolt?

In stock. A tension control bolt also known as a TC bolt is a heavy duty bolt used in steel frame construction. The head is usually domed and is not designed to be driven.

What are TC bolts used for?

Tension Control Bolts also known as tc bolts are used for high strength, steel to steel fastening. It is one of the most commonly used fasteners for high strength applications, even preferred over large hex bolts. The head is dome-shaped and is not designed to be driven with normal tools.

Do they make galvanized TC bolts?

Galvanized tension controls bolts are an excellent choice for outdoor or exposed installations, or where corrosion or weathering is a concern.

How do I identify an A325 bolt?

All A325 type 1 bolts are simply marked with “A325” and the manufacturer’s logo. The exceptions are as follows: A325 type 3 weathering steel bolts are underlined (A325). Fully threaded A325 structural bolts are designated with a “T” (A325T).

What is the difference between A325 and A490 bolts?

Grade A490 is stronger than Grade A325, but strength isn’t the only factor in making a decision for bolts. A490 bolts cannot be hot dip or mechanically galvanized. Grade A325 is not as strong, but it is a lower cost bolt that can be galvanized to avoid corrosion.

Why is a tension control bolt preferred over conventional bolts?

Pros of Tension Control Bolts TC bolts install easier than heavy hex bolts, DTIs (direct tension indicators), and other construction fasteners. There is just one lot number involved in the tension control bolt assembly and they come precisely lubricated.

How do you install tension control bolts?

Basic Installation Procedure

1. Insert the bolt through the connection and then place the washer chamfered side outermost onto the bolt followed by the nut (Fig 1).
2. Using the electric shear wrench, engage the inner socket over the bolt spline and the outer socket over the nut (Fig 2).
3. Press the power switch.

What is a DTI bolt?

DTI’s are individual bolt load cells, which measure pretension developed during tightening, regardless of torque resistance of the bolt.

What size is A325 bolt?

ASTM A325 structural bolts are designed for steel to steel connections….Available Sizes.