Spiral Point Tap: M3.5x0.6 Metric, 3 Flutes, Plug Chamfer, 6H Class of Fit, High-Speed Steel-E-PM, AlCrN Coated MPN:5664549

This plug thread gage has a size of 3/8 - 16 threads with 2B and 3B classifications for its precision measurements. It is designed as a single end version to measure the threads using the Go method by aligning it with an inside threaded hole while rotating it. The product features an L-7 length of thread engagement allowing it to cover more lengths of thread, and made out of sturdy steel material for durability during repeated uses. Applicable across various industries such as automotive, aerospace, or mechanical engineering sectors requiring strict control over internal thread measurements on metals like aluminum or steel, this item is an essential toolbox item to ensure correct component assembly while upholding safety standards.