Gary's FAQs

Measuring Round bend U-bolts

How does Portland Bolt measure round bend U-bolts?

Portland Bolt measures round bend U-bolts based on the dimensions outlined in the Industrial Fastener Institute Standard IFI-136. The length (L) is measured from end of bolt to inside of the bend, while the width (C) is measured between the legs. Some companies will show the length to the bottom or centerline of the bend... Read more

Can A490 bolts be galvanized?

Can A490 bolts be galvanized?

The ASTM F3125 Grade A490 specification does not allow either hot-dip galvanizing (per ASTM F2329) or mechanical galvanizing (per ASTM B695) due to the risk of hydrogen embrittlement. The only coating currently allowed on A490 bolts is a zinc aluminum coating meeting any of the following specifications: ASTM F1136, F2833, or F3019. ASTM Committee F16... Read more

Standard Bend Radius

What is the standard bend radius on right angle anchor bolt?

ASME B18.31.5 is, “The standard that establishes general requirements for parts classified as bent bolts.“ According to this specification, “The inside diameters or bend radii shall be as agreed between the buyer and manufacturer, as each dimension depends on material characteristics.” In essence, there is no standard guideline for the radius of the bend in... Read more

Measuring Thread Length

How does Portland Bolt measure thread length?

We run the nut onto the bolt until it stops, and we measure from end of inward face of the nut to end of bolt.  This does not include any thread runout which can range from ½” long for ¾” diameter and 1-1/4” long for 2-1/2” diameter and larger.

Unthreaded Shank

What do you call the unthreaded shank of a bolt?

The unthreaded portion of a headed bolt is called the grip. The length of all headed bolts (except countersunk head bolts) are measured from underneath the head to the end of the threads. The overall bolt length is made up of thread length plus grip length.

Custom Packaging

Does Portland Bolt provide custom packaging?

Yes Portland Bolt offers custom packaging. Many of our light rail customers have us fully assemble the OCS foundation bolts marked with the foundation type. This allows them to simply drop the fully assembled bolts into their location. This also frees up their people from the task of field assembling product they may not be... Read more

Stainless Grade 55 All Thread

Can I get stainless steel all thread rod in grade 55?

The reference to “Grade 55” is for getting a stainless steel all thread rod with a minimum yield strength of 55,000 psi.  There are currently no stainless steel specifications commonly stocked that will guarantee a 55,000 psi yield strength. The most commonly stocked grades of stainless all thread rod are A193, A320, and F593. The... Read more

F2329 Classes

Are there classes in the ASTM F2329 galvanizing specification similar to ASTM A153?

The A153 specification has 4 classes of material for hot-dip galvanizing: A. Castings – Malleable Iron, Steel B. Rolled, pressed, and forged articles C. Fasteners over 3/8” in diameter, washers 3/16” to 1/4” thickness D. Fasteners 3/8” inch in diameter and under, washers under 3/16” thick F2329 was created out of A153 to further define the... Read more

Weathering Steel F1554

Do F1554 anchor bolts come in weathering steel?

No they do not. F1554 is a carbon steel, carbon boron, alloy, or high-strength low-alloy specification. F1554 has 3 strength grades, 36, 55, and 105. These numbers correspond to the minimum yield strength required. If corrosion resistance is required, F1554 anchor bolts can be hot-dip galvanized to the F2329 specification. If weathering steel anchor bolts... Read more

Stainless A325

Can I get A325 bolts in stainless steel?

The short answer is, “No, you cannot match the A325 strength with stainless steel.” Some grades of strain hardened or quenched and tempered stainless steel fasteners will exceed the A325 strength requirements, but most standard stainless fasteners are not nearly as strong as A325 bolts.  These bolts are very different chemically.  Whereas stainless steels consist... Read more