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
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.
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.
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
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
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
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
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
Yes there is. A193 and A320 grades B8 and B8M are assumed to be Class 1 unless otherwise specified. Class 1 fasteners are carbide solution treated, while class 2 fasteners are carbide solution treated and strain hardened. The work hardening that occurs in the manufacturing of Class 2 fasteners increases their strength. Class 2 fasteners are differentiated... Read more
Headed bolts are required to be stamped on top of the head, while most rods and some bent bolts are required to be stamped on one end. This Fastener Identification Markings Chart shows the various marking requirements for most common grades of ASTM and SAE fasteners. Headed Bolts ASTM specifications require a manufacturer’s identification and... Read more