Steven's FAQs

Clevis

Welding Clevises

Can I weld to a clevis?

Technically you should not weld to a clevis which is made of C1035 steel and has a carbon content of approximately 0.35%, too high to be normally considered a weldable material. If the engineer has required welding to the clevis, then a special welding procedure should be followed that is outlined in AWS D1.1 or... Read more

Tie Rod Mounting Brackets

Does Portland Bolt manufacture the mounting brackets for tie rod assemblies?

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

Fully Threaded A490s

Can ASTM A490 heavy hex structural bolts be fully threaded?

2015 Update: Yes, ASTM A490 bolts can now be fully threaded. There is a supplemental provision in the F3125 specification that allows the bolt to be fully threaded as long as it is stamped with an “S”. The A490 specification starts at ½” diameter and stops at 1-1/2” diameter, and each diameter has its own specific thread length... Read more

Weathering Steel

Do A325-3 and A490-3 bolts rust?

Yes, A325-3 and A490-3 are made from weathering steel containing copper, chromium, and nickel which induces the surface to form a heavy oxide coating that protects the base material from corroding any further. This brownish-red coating seals the material from corrosion much like other external coating options. These types of bolts are more often used... Read more

Cargo Containers

Does Portland Bolt load containers?

Portland Bolt does not have the ability to load cargo containers for ocean freight. We have no experience in securing the contents inside so this will have to be done by a freight forwarder. We routinely load our shipments on a truck at our facility where they are sent to be loaded in a container... Read more

Hex Lag Screw

Gimlet Points on Lag Screws

Are gimlet points (threaded points) required on large diameter lag screws?

A lag screw, also referred to as a lag bolt, is a heavy wood screw with a spiral thread and a hex or square head used for driving it into wood. Large diameter lag screws typically do not require gimlet points because of the need for a pilot hole to lower the torque required to... Read more

Black Bolt

“Black” Bolts

Are black bolts painted black?

Most likely no. Our “black” bolts are unfinished or bare steel. The term “black bolt” is an industry term for plain finish or no finish bolts. These bolts offer no corrosion resistance and will rust over time. If you are looking for a decorative coating that is actually black, you will want to specify that... Read more

ASTM and Stainless Steel Washers

What is the ASTM specification for stainless steel washers?

Stainless steel washers are not made to an ASTM specification; they are only made to raw material specifications. Most stainless steel ASTM bolt specifications refer to the raw material specification they are made from as the appropriate washer to use in conjunction with the bolt. Hence, an ASTM A193 or A320 grade B8M bolt, made... Read more

Oversizing Plate Holes

How large should I oversize my plate holes?

Square plates, rectangular plates, round plates, and templates are often required as part of an anchor bolt or fastener assembly. These plates serve as either large, oversized washers or anchor plates which are fastened to the bottom of anchor rods to provide pull-out resistance. Plates and washers are typically manufactured to ASTM A36, A572 grade 50,... Read more

Contect anchor sleeve

Metric Anchor Bolt Sleeves

Does Portland Bolt sell metric anchor bolt sleeves?

Portland Bolt does not sell metric anchor sleeves but we do provide them all the time using a soft imperial conversion. We round up to the closest imperial (inch) size to make sure they are large enough to fit on the bolt. If the fit is too big, we recommend taping the neck of the... Read more