7/16" x 20 nf HSS Adjustable Threading Die This is for one new industrial quality, set-screw adjustable die for cutting external threads. Die diameter: 1" round Thread size: 7/16"x20 NF Made of: High Speed Steel Made in: Japan (highest quality export) Brand: Adjustment screw allows die to be set for different classes of fit. Die will maintain fit size until screw is tightened or loosened.
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