9/16"NF18 Tap and Nut Die Set, High Quality High-Carbon Chromium-Manganese Steel

9/16"NF18 Tap and Nut Die Set. 1x 9/16"NF18 Tap. 1x 9/16"NF18 Die. Rockwell hardness = HRC 60-67. Die Nut Size = 1.5" / 37/38mm.

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