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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
Boring Head Set, R8 $94.95

More information
Boring Head Set, R8
Metal Transmission Gear Kit, Mini Lathe & 3MT Mini Mill
  • Replaces both plastic transmission gears with metal
  • Fits mini lathes and 3MT mini mills
  • Small Gear: 12 Teeth / 20 Teeth, 12 mm Bore, 4 mm Keyway
  • Large Gear: 21 Teeth / 29 Teeth, 30 mm Bore, 5 mm Keyway

$62.95

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DRO Scale, 6" (150 mm) With Display
  • 6" travel stainless steel scale
  • Stackable display unit
  • Mounting arm
  • Displays in inches or mm

$64.95

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Angle Gage, Digital
  • +/-180 Degree Range
  • Auto Off conserves battery life
  • 0.1 Degree Resolution
  • Compact and Lightweight design with ±0.1 Degree Repeatability
  • Mounting magnets on 3 sides to ensure accurate measurements

$36.95

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