The answer to “is Heat Treating used to change the chemical composition of fasteners” is false. This edition of the Fastener Training Minute with Carmen Vertullo was originally published November 21, 2019 as “Is Heat Treating used to change the chemical properties of fasteners?” during episode 146 of Fully Threaded Radio. Heat Treating cannot change the […]
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How do we measure, and what is the Shear Strength of a fastener? This edition of the Fastener Training Minute with Carmen Vertullo was originally published October 23, 2019 as “Shear Strength” during episode 145 of Fully Threaded Radio. Now strangely enough, it’s a very unusual property in that we very seldom actually test for […]
Why bother passivating Stainless Steel fasteners? This edition of the Fastener Training Minute with Carmen Vertullo was originally published August 20, 2019 as “Passivation of Stainless Steel fasteners” during episode 143 of Fully Threaded Radio. Stainless steel is a corrosion resistant alloy ; this is one of the properties of stainless steel. Stainless Steel is […]
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When are Surface discontinuities not acceptable on a fastener? This edition of the Fastener Training Minute with Carmen Vertullo was originally published July 14, 2019 as “Problems with Fastener finishes” during episode 142 of Fully Threaded Radio. This is Carmen Vertullo with the Fastener Training Minute from the Fastener Training Institute and AIM Testing Laboratory […]
Is there a maximum allowable length for a 1 1/2 inch a490 bolt. This edition of the Fastener Training Minute with Carmen Vertullo was originally published June 13, 2019 as “How long is too long for Structural Bolts” during episode 141 of Fully Threaded Radio. The structural bolt business is a risky business to be […]
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Is it okay to mix some fasteners, different lots, manufacturers, at shipping time? This edition of the Fastener Training Minute with Carmen Vertullo was originally published May 20, 2019 as “Comingling” during episode 140 of Fully Threaded Radio. I received an interesting question from one of our Fastener Training Institute students, and it had to […]
ASTM F1941 / ASTM F1941M are important updates to ASTM B633 for plating fasteners. This edition of the Fastener Training Minute with Carmen Vertullo was originally published April 18, 2019 as “An Important Fastener Standards Update” during episode 139 of Fully Threaded Radio. Today’s topic is an important fastener standards update that you need to […]
What are Grade 9 bolts? And where do they come from? This edition of the Fastener Training Minute with Carmen Vertullo was originally published March 13, 2019 as “What are Grade 9 bolts” during episode 138 of Fully Threaded Radio. A question came up recently regarding a product we all know as Grade 9, Grade […]
Preparing a sample of fasteners to be sent to a testing lab. This edition of the Fastener Training Minute with Carmen Vertullo was originally published February 15, 2019, as “Specimen Preparation during episode 137 of Fully Threaded Radio. Today’s has to do with specimen preparation, for those of you who need to send Fasteners out […]
What caused the failure of the structural bolts on the Mario Cuomo bridge? This edition of the Fastener Training Minute with Carmen Vertullo was originally published January 17, 2019, as “Another bridge bolt problem” during episode 136 of Fully Threaded Radio. I recently received some information regarding another Bridge bolt problem, this time in New […]
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