Nov 03, 2014 · don’t let the melting aluminum interfere with the weld pool; this will cause porosity. you can weld aluminized tubing with gas metal arc welding (gmaw) using er70-s6 mild steel filler metal and 75 percent argon/25 percent oxygen shielding gas, but this will leave the finished weld zone unprotected because the aluminum will be burned away.
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Known as socket head or socket shoulder bolts and screws, they may have a hex or slot driver. hex head shoulder bolts and screws may or may not include an internal driver, as they can be tightened at their head with a wrench. shoulder screw dimensions vary, including 3/8, 1/2, 5/8, and 5/16 shoulder bolt sizes.
A shoulder screw is often called a shoulder bolt or, when used to attach a stripper plate, a stripper bolt. whether you are doing repairs, maintenance or assembly, grainger has the shoulder screw for the job, from standard socket head screws to metric self-locking screws.
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