Nut Weight Calculator

Due to the popularity of our Bolt Weight Calculator, we have created another tool you may find useful. The Nut Weight Calculator will help you quickly determine the weight of a variety of different nut types, from hex jam nuts to large heavy hex nuts. Click to learn more.

Employee Update

Mike Monlux

Over the last nine years, Mike has developed strong relationships with a number of critical Portland Bolt customers. With his experience in marine and steel fabrication industries, he is able to quickly answer customers' questions and find solutions. When not at work, he can be found coaching youth sports and spending time with family and friends. Click to learn more.

Marine Construction Industry

Marine contracting is one of the industries that ties in extremely well with Portland Bolt’s manufacturing capabilities. Our highly efficient roll threading provides a cost benefit on mild steel bolts 1” and under. In addition, our in-house galvanizing provides the quality and quick turnaround needed to help marine projects run smoothly and on schedule. Some of the products we provide include timber bolts, shear plates, and malleable iron washers.

In addition to numerous projects on the west coast, Portland Bolt has provided bolts for marine projects in places such as Texas, Louisiana, Maryland, and even overseas. Learn more about recent marine projects.

Timber Bolts

Timber bolts have long been used in heavy timber and marine construction projects. This bolt is also commonly referred to as an economy bolt since it helps to reduce costs by eliminating the need for an additional malleable iron washer. The oversized round head helps prevent the bolt from pulling through lumber, while providing a lower profile than a hex bolt. This unique head height makes it ideal for bridge decking and dock structures. Click to learn more.

Ask the Expert

ASTM Letter Designation Explained

Every ASTM standard is identified by a unique designation. It includes a capital letter (A - H), followed by a serial number ranging from one to four digits, a dash, and finally the year of issue. For example, a common bolt specification is A449 - 07a, although when specified the standard’s year designation is usually not included. Click to learn more.

About Portland Bolt

Portland Bolt & Manufacturing Company is a worldwide supplier of quality construction and industrial fasteners. Our modern 55,000 square foot facility allows each manufacturing process to be scheduled based on your requirements. The company provides products for over 2,500 organizations in a variety of industries including: marine construction, steel buildings, highway projects, and precast concrete.