Learn about ASTM A307 Grade A, SAE J429 Grade 5, and SAE J429 Grade 8 bolts, their specs, and head markings.
see the full article here http://goo.gl/yOFMZu or visit the store http://goo.gl/O5ScP2 Mig Welding Aluminum with a spool gun can be easy…and it can be a big headache sometimes too. If you have poor argon coverage, you will get soot. This video shows a few tips for avoiding soot. Along with a few other tips.