Rod Size for Die Threading

Thread Specification:

Examples:

#10-32 10-32	In	Numbered machine screw thread (#1 through #12)
1/4-20 1/4"-20 0.25-20	In	Fractional UNC thread (1/4" through 1")
1/2-20 1/2"-20 0.5-20	In	Fractional UNF thread (1/4" through 1")
M6 M6x1 6x1	mm	Metric coarse thread (M1 through M22)
M6x0.75 M6x.75 6x.75 6mm x.75	mm	Metric fine thread (M1 through M22)
0.255-40 .255-40 0.255"-40	In	Non-standard thread (0.06" through 1.0")

Reducing the size of a rod you want to thread with a die makes it easier to start the die,
but the real secret is to add a 30° chamfer to the end of the rod.

Die Blank Size is the Major Diameter less 10% of the Pitch.
This is about the same as common bolts.

HiTorque 6450 Deluxe LED Mini Mill

All the Features of the HiTorque 3990 (brushless motor, gearless spindle drive, solid column, etc.)
LED display with illuminated controls and integrated spindle speed readout
3-axis Bluetooth DRO w/tablet on X, Y, and Z-axis
Largest table and X-Y travel in its class
Aluminum hand wheels and drill press handles

$2,199.00

More products like this

Drill Press, Mini Bench Top, Variable Speed

1/4" Drill capacity
0 to 3600 and 0 to 5000 RPM continuously variable speed ranges
Cast iron base and steel column
DRO depth readout

$299.95

More products like this

Knob and Handwheel Kit, Mini Lathe

Anodized handwheels for apron and tailstock
Chrome levers for half-nuts, tool post and tailstock
Handwheels: 90 mm OD, 8 mm bore
Levers: M8 threading
Acron Nuts: M8 threading

$84.95

More products like this