Deal 1-1/8″-7 HSS Round Adjustable Die 3″ OD Uncoated (Bright) DWTH3-1187

The HSS Round Adjustable Die is designed for precision threading on shafts up to one and one eighth inch in diameter with seven threads per inch. Constructed from High Speed Steel and finished uncoated (bright), it delivers durable wear life while enabling accurate thread formation. The die features dual chamfer faces and a fine pitch adjustment screw to set the gap precisely, with a beveled slot that supports adjustment via a machine holder when needed.

Specs

Material: High Speed Steel

Die type: Round adjustable threading die

Nominal size: 1-1/8 inch diameter

Thread pitch: 7 threads per inch

Outside diameter (die body): 3 inch

Finish: Uncoated (Bright)

Adjustment: Fine pitch screw to separate or bring sides together

Chamfer geometry: Both faces chamfered; one side 2 to 3 thread chamfer, opposite side 1 to 1-1/2 thread chamfer

Slot design: Beveled slot for machine holder compatibility; adjustment screw can be removed for holder-based adjustment

Features

High Speed Steel construction enhances wear life during threading operations

Round adjustable form provides precise thread formation around one eighth of an inch nominal size with seven threads per inch

Dual chamfers improve thread starting and clearance near shoulders

Fine pitch adjustment screw enables precise, repeatable gap settings

Beveled slot supports use in machine holders and allows adjustment via holder screws when mounted

Uncoated bright finish facilitates visual inspection of cut threads and works with standard cutting oils

Compact 3 inch body diameter offers stability during manual or machine-assisted threading

Ideal for shop scenarios requiring reliable, repeatable internal thread formation or restoration on shafts and bars of the specified size

Physical

Shape: Round adjustable die

Chamfered faces: Both ends chamfered with distinct thread chamfer specifications

Adjustment access: Fine pitch screw in body; beveled slot permits screw removal for holder-based adjustment

Finish: Uncoated (Bright)

Die body outer diameter: 3 inch

Nominal threading size: 1-1/8 inch diameter