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Spindle Lock, Interlocked, HiTorque Mini Mill
Spindle Lock, Interlocked, HiTorque Mini Mill
 
 
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Locking Lever, Old Style
Locking Lever, Old Style
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Machinist's Calculator

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lmscnc.com/calc

 
Onliine 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.
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