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Question: What is the maximum service temperature for A193 Grade B7 bolts?

Answer: Portland Bolt is often faced with this questionAs seen in Table A-10, when the Tension (KSI) value begins to decrease, the integrity of the bolt becomes compromised.  Read More...

Question: Do F1554 anchor bolts come in stainless steel?

Answer: The answer to this question is no. As stated in Section 1.1, the F1554 specification covers various configurations of, “…carbon, carbon boron, alloy, or high-strength alloy steel anchor bolts.”  Read More...

Question: Why won’t Portland Bolt manufacture galvanized bolts above 1-1/2 with 8 TPI thread?

Answer: Our two main concerns with providing galvanized bolts larger than 1-1/2 with 8 threads per inch is the lack of overtap allowance standards for the mating nut, and the potential for premature thread stripping due to the nut oversizing. Read More...

Question: Are die seams allowed on headed bolts?

Answer: There are several differences between bolts intended for use in construction and more precision fasteners, such those used in an OEM application. Read More...

Question: If my already installed anchor bolts got bent by accident, is it OK to bend them back?

Answer: The anchor rods in the above photo were damaged because they were covered with snow and the equipment operator did not see them. Read More...

Question: When is it acceptable to weld to bolts, and when it is prohibited? Answer: Many grades of bolt gain their strength though a heat treating process, and the addition of heat during welding can adversely alter those strength properties. Read More...

Question: What is the difference between SS316/SS304 and SS316L/SS304L?

Answer: Stainless steel type 316 and type 304 are raw material grades for stainless steel. Read More...

Question: How do I calculate the slope in degrees for a beveled washer?

Answer: The slope of a beveled washer or a given segment represents how much the elevation changes over a certain distance. Read More...

Question: When designing vertical rod bracing system I would like to use F1554 grade 55 rod to achieve smaller diameters. But if I use a turnbuckle it seems as though I am limited to the safe working load of that turnbuckle. Is that true? If so, then is there a higher capacity turnbuckle available?

Answer: You are correct that your capacity would be limited by the safe working load of the turnbuckle, but it would be limited to that regardless of the grade of steel used for the bracing rod. Read More...

Question: Can welding be performed on high strength anchor bolts and fasteners?

Answer: The short answer is that in most cases, welding is not allowed on high strength bolts. Read More...