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Online Metals  

 

  

Rod Size for Die Threading

Calculator Menu

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.

 
SPECIAL OF THE WEEK
Adjustable Parallel Set $36.95

More information
Adjustable Parallel Set
DRO Scale, 12" (300 mm) with Display
  • 12" travel stainless steel scale
  • Stackable display unit
  • Mounting arm
  • Displays in inches or mm

$94.95

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Tooling Plate, 6 x 12"
  • Made from aluminum plate 3/4" thick
  • Plate is 6" x 12"
  • 220 Holes tapped 1/4"-20, 72 holes for locating pins
  • Includes clamping kit
  • Designed for small work pieces

$129.95

Regularly $139.95

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Rotary Table, 4" Digital Readout with Tailstock, Dividing Plate, & 3-Jaw Lathe Chuck
  • Complete Rotary table and indexing solution
  • Includes 4" rotary table, diving plate, tailstock, and 3" 3-jaw chuck
  • Lock down clamps and t-slot nuts also included
  • Tailstock is adjustable in height
  • 2 Morse taper center hole

$594.95

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