Tension Control

Tension Control Bolts, A325 and A490

Tension control bolts are available in one of two different types:  ASTM: A325 tension control bolts (F1852), in plain or mechanically galvanized, and ASTM: A490 bolts (F2280), which are plain and not available with a coating. All these bolts are made from high strength steel and are available in many different diameters and lengths. The diameters we carry range from ⅝" to 1 ⅛" in every length manufactured up to 8-1/2" long.

Add to Quote
Name
Spec
Length
Thread
Dia
Min-Qty
Price
Quantity
F1852 OR A325
2 3/4"
7 UNC
1 1/8"
F1852 OR A325
3"
7 UNC
1 1/8"
F1852 OR A325
3 1/2"
7 UNC
1 1/8"
F1852 OR A325
3 1/4"
7 UNC
1 1/8"
F1852 OR A325
3 3/4"
7 UNC
1 1/8"
F1852 OR A325
4"
7 UNC
1 1/8"
F1852 OR A325
4 1/2"
7 UNC
1 1/8"
F1852 OR A325
4 1/4"
7 UNC
1 1/8"
F1852 OR A325
4 3/4"
7 UNC
1 1/8"
F1852 OR A325
5"
7 UNC
1 1/8"

A325 Tension Control Bolts Quality And Performance Considerations

A325 tension control bolts and A490 tension control bolts perform optimally in a moderate temperature range: between 40° F and 90° F. Galvanized tension controls bolts or TC bolts are an excellent choice for outdoor or exposed installations, or where corrosion or weathering is a concern. Plain, uncoated TC bolts are suitable for indoor or enclosed installations, or where exposure to corrosive factors is not an issue.

Why Use Tension Control Bolts Instead Of Hex Head Bolts Or Rivets?

While rivets were the first fasteners used in heavy construction, other high strength fasteners were developed that enabled faster installation and required the use of many fewer hex head bolts than rivets This was a result of hex bolts' superior strength and quicker installation time, which soon prompted the construction industry to use hex head bolts as a standard. While hex head bolts and control bolts share the same component specs, TC bolts are faster to install, allowing for three to four times greater speed of installation.   


Why Source Tension Control Bolts From Baco Enterprises?

For twenty years, we have been a major distributor of tension control bolts and are proud to represent leading domestic and international fastener manufacturers. As part of our own quality control measures, we check random lots of A325 and A490 structural bolts to assure each component meets with specific tolerance requirements and integrity standards. 

We complete Skidmore bolt testing, in which the bolt, nut, and washer assembly is placed in calibrated tension reading equipment. The bolt is then tightened in the exact same way it would be tightened when being installed in a steel connection until the spline shears off. At that point, a tension reading is taken to assure the minimum and maximum tension requirements for that bolt's diameter are met.


What You Can Expect From BACO Enterprises

Steel fabricators and erectors can find common sizes of bolts just about anywhere, but when you purchase from Baco, you can trust that every possible size of TC bolt you may need will be readily available through us, competitively priced and ready to ship quickly. We can also provide an unbeatable bolt quality guarantee and are proud to offer on-site support and inspection services. While many vendors come to us to obtain their resale stock, when you work directly with us, you get bolts from a trusted and quality committed source.