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.

Electronic Digital Caliper, 6" Professional Grade

Z-Limit brand guarantees professional quality
Large, easy-to-read LCD display can be zeroed at any position
Automatic shut-off after 5 minutes of non-use, last measuring position retained when shut off
Hardened stainless steel body for long life, with fine adjustment thumb wheel
Resolution is 0.0005" (0.01mm) and linear accuracy meets DIN 862 standard

$64.95

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Magnetic Base Indicator Holder

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Spider, Mini Lathe Spindle

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