The Vise Grip HAN3840 is a high carbon steel (HCS) adjustable round threading die engineered to cut clean 7/16"-20 NF (National Fine) external threads with consistent accuracy. The 1" outer diameter fits standard round die stocks and holders for easy, secure operation in the shop or field.
The adjustable design allows for fine-tuning thread fit and cutting depth, making it suitable for both new thread cutting and chasing existing threads on bolts, rods, and fasteners. Ideal for maintenance, repair, and fabrication work in professional workshops and home garages alike.