Newest FAQs

Yes, Portland Bolt manufactures crane mat rods. Crane mats (also known as timber mats, barge mats, road mats, swamp mats, pipeline mats, and floater mats) are wooden mats used for stabilizing machinery (often cranes) on unstable ground. They can also be used as a makeshift road, similar to a corduroy road. Crane mat rods are long threaded... Read more

SAE (AISI) 1045 in an “as rolled” condition will likely not meet the mechanical requirements of ASTM F1554 Grade 55. ASTM F1554 Grade 55 is a finished fastener specification with mechanical and chemical requirements. SAE 1045 has chemical requirements associated with it; however there are no mechanical requirements since it is a raw material specification, not a... Read more

The overtapping allowances for mechanically galvanized nuts are the same as overtapping allowances for nuts that are hot-dip galvanized. Mechanically galvanized nuts that adhere to ASTM B695 are “cold-galvanized,” which implies that they are coated with zinc at room temperature. Neither electricity (electroplate galvanizing) nor heat (hot-dip galvanizing) are applied in a mechanically galvanized process.... Read more

As far as the mechanical and chemical makeup of both A320 Grades L7 and L43, there isn’t much of a difference at all. The main difference is that the raw material used to make A320 L7 fasteners is typically 4140, whereas the raw material used to make A320 L43 is 4340. Below is information found... Read more

Unfortunately Portland Bolt does not have the capability to fabricate the wall mounts to which clevises attach. These fabricated lugs need to be designed by an engineer or architect to ensure they can withstand the loads applied to the tie rod assemblies. If you have a detailed drawing of the mounting brackets, we can have them... Read more

Due to the fact that Portland Bolt is a manufacturer of nonstandard anchor bolts and construction fasteners, the vast majority of the product that we manufacture and sell to our customers is custom and is manufactured to the specific requirements of the job they are being used on. Portland Bolt is not a large scale,... Read more

Transcript Hello, my name is Amanda Seal. I work as an inside sales/estimator at Portland Bolt and manufacturing. I’ve been working with the company since October 2014, although we have over 100 years combined industry experience working in the sales office. Before I came to Portland Bolt, I lived and grew up here in Alaska. Here... Read more

Portland Bolt’s Torque Chart includes approximate torque values for fastener specifications made from carbon steel and alloy steel. We have chosen to exclude torque values related to fastener specification made from stainless steel. The primary reason we have decided to omit stainless fastener specifications from our torque chart is because we are unable to locate... Read more

I have a client out of Israel and they manufacture equipment for use in power plants. They have a question about anchor bolts in seismic zones. They want to use anchor bolts made from SAE 4340 material and they would like to know if that is equivalent to ASTM F1554 material. Will this material be... Read more

Timber bolts, also referred to as economy bolts in the Pacific Northwest, are designed with a round oversized head which eliminates the need for a washer underneath the head. The underside of the head has two nubs which bite into wood and prevent the head from spinning in the timber. The nubs under the head... Read more