Expert Answers about Hand Tools

• Why Does MB Sturgis Sturgi-Stay T-Fitting Have Male and Female Threads
• The two threads you pointed out on the MB Sturgis Sturgi-Stay T-Fitting for Type 1 Valve # 103612-MBS are on the outside a Type 1, ACME fitting and on the inside a POL fitting. A POL fitting is commonly found on the ASME tank used on motorized RVs to connect the propane tank valve to the RV regulator. Before the introduction of Type 1 fittings, POL fittings were the standard fitting for all propane tanks. Now, both types of fittings are featured on DOT cylinders. The POL fittings are...
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