Anchor Bolts FAQs

SAE 4340 and ASTM F1554

Do bolts made from SAE 4340 material meet the requirements of ASTM F1554?

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

F1554 Head Stamping

Does ASTM F1554 require headed anchor bolts to be stamped on the head with the fastener’s grade symbol and manufacturer’s logo?

Stamping the heads of F1554 anchor bolts is not required per the ASTM Specification, but Portland Bolt chooses to do so to provide a secondary identification. Product Marking ASTM F1554 anchor bolts are marked on the threaded end that projects from the concrete with a designating color code, as is required by the specification.  Marking... Read more

Rod with Nut vs Headed Bolt

Can I substitute a rod with a nut for a headed bolt?

We do not recommend allowing this type of substitution without approval from the Engineer of Record. Based on performing mechanical tests to the ASTM specification F606 which covers the testing of construction fasteners, a rod with a nut would typically not produce the same strength characteristics as a bolt with a forged head. Under F606,... Read more

Headed or Bent Anchor Bolts

Is it better to use a headed anchor bolt or a L-bolt?

Engineers often design anchor bolts in one of four common configurations. We see anchor bolts with forged heads, 90 degree bends, straight rods often with anchor plates on the bottom, and swedged rods. Engineers will design a structure using different grades and configurations based on the size, weight and design of a structure, wind forces,... Read more

A490 Anchor Bolts

Are ASTM A490 anchor bolts available?

No. Just like in the case of anchor bolts being specified as A325, supplying anchor bolts as ASTM A490 is technically something that should be avoided. This is because the A490 specification is intended to cover heavy hex head bolts for structural steel connections only. This is mentioned in several places within the A490 specification.... Read more

A615 Anchor Bolts

I was told that I cannot use A615 grade anchor bolts because they are not listed in the approved anchor bolt section in the AISC manual. Is there a specification that addresses the use of A615 grade anchor bolts?

There is no mention of any ASTM A615 grade being specifically used for anchor bolts in any ACI, AISC or ASTM specifications that we are aware of. Simply, the A615 grade is a rebar specification for concrete reinforcement; it is not an anchor bolt or raw steel specification. Using rebar for anchor bolts does present... Read more

A193 Grade B7 Anchor Bolts

Is A193 Grade B7 a valid specification for anchor bolts?

While there is certainly nothing to preclude ASTM A193 B7 from being specified for anchor bolts – and Portland Bolt manufactures them quite often – the specification is not intended for anchor bolt use. ASTM F1554 Grade 105 is a specification specifically developed for anchor bolts and possesses virtually identical chemical and physical properties. ASTM... Read more

Fixing Misaligned Anchor Bolts

What do I do if I poured my anchor bolts in the wrong position?

This is a common problem, and one that can be very difficult to remedy once the concrete is cured. As with most job-site fixes, the repair method depends on the nature of the problem and when in the construction process it is first noted. The repair method may be different if one bolt is out... Read more

Headed F1554 Anchor Bolts

Do headed F1554 anchor bolts have a standard hex head or a heavy hex head?

ASTM F1554 does not specify whether the headed configuration is to be a standard hex pattern or heavy hex. There are three primary configurations covered by the ASTM F1554 specification which include straight rods, bent anchor bolts, and forged headed anchor bolts. Whether or not a headed anchor has a standard hex head or a heavy hex head can differ depending on the application. Since the... Read more

Anchor Bolt Pullout Strength

What is the Pullout Strength of Portland Bolt’s Anchor Bolts?

This is a question that we are asked on a regular basis, and one that we do not have a clear answer for due to the variety of factors involved in making this calculation. Anchor bolt pull out strength is the force required to pull a single bolt out of its foundation. In order to... Read more