FTM 138: What are Grade 9 bolts?
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 […]