Screws Bolts

We are fasteners specialist that produce customized and specialized fasteners.

Hex Bolts

Hex bolts, also called hex head cap screws, are bolts with a hexagonal or six sided head. A common feature on a hex cap screw is a washer surface directly under the head which creates a better seal. Threads will vary according to the individual bolt sizes and dimensions. ISO standards for threads are: length is twice the diameter of the bolt plus ½ inch.

Hex bolts (six sided heads) are the industry standard for fasteners with forged heads. ASTM A307 grade A bolts, all SAE hex bolts, and several other common specifications require a standard (finished) hex head. For specifications such as A307 grade B, A325 and A490 that require a heavy hex pattern, refer to dimensional tolerances for heavy hex bolts or structural bolts.


Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts.

Hex Machine Bolts for Outdoors

Hexagonal machine bolts are a very common choice for machine repairs, decks, and several outdoor applications. As bolts have to withstand great force and be durable, the bolts should also be from a strong material, especially when the item you use the bolts on is outdoors. Stainless steel bolts and carbon steel bolts with zinc plating resist corrosion well. Machine bolts are either coarse or fine threaded, and you should choose based on the type of project you intend to use the bolts on.

Hex Bolts as Headed Anchor Bolts

Hex bolts that come with a forged head function as headed anchor bolts. These bolts have a non-threaded end with a forged hex, square head, or heavy hex. You can embed the headed end into concrete foundations in order to secure light poles, substation structures, structural steel columns, and bridge rails.

Hex Bolts for Wood Construction Projects

Hex bolts are very common construction fasteners for wooden furniture and other construction projects. They secure hinges and other metal details into place on wooden panels and are thus useful when putting together furniture. The wood construction industry has been using hex bolts for decades and they are common as construction fasteners because of their durability.

Hex Tap Bolts for Exteriors

Hex tap bolts come with a no flange face and a trimmed hexagonal head. These bolts have a smooth body and a threading on the end. The thread length of a hex tap bolt is about twice the diameter of its shank. However, some bolts could have more threading, depending on their manufacturer and length. They are available in many varieties and sizes and are common for exterior woodworking applications and boatbuilding. If you use hex tap bolts on boats, make sure they resist corrosion also below the waterline. Several different corrosion resistant films could cover these bolts in order to make them resistant to corrosion and suitable for a wider variety of applications.