Theoretical thread dimensions
Single-start 60° profile. Approximate basic values without tolerance-class allowances; these are not acceptance limits or tap-drill diameters.
- Basic pitch diameter
- 12.701 mm
- Approx. external minor Ø
- 11.5463 mm
- Triangle height H
- 1.7321 mm
01M14 does not always mean 2 mm pitch
The coarse series uses 2 mm pitch, but M14 × 1.5 and M14 × 1.25 also exist. In a repair, measure the actual pitch: diameter alone does not identify the variant.
02Preparing a 12 mm hole
VÖLKEL specifies 12 mm for an M14 × 2 cutting tap. Deburr the entry and allow sufficient bottom clearance in a blind hole. A forming tap requires its own manufacturer-specified hole size.
03Machining and thread fit
A 2 mm pitch gives 2 mm axial travel per revolution for a single-start thread. Drawing tolerances still govern fit. Set material, hole type and useful thread depth in the calculator before preparing a cycle.
Similar threads: check diameter and pitch
A fine-pitch M14 keeps the nominal diameter but changes the pitch, drill and fit. Check the full drawing designation.
| Thread | Ø mm | Pitch |
|---|---|---|
| M14 × 2 | 14 | 2 mm |
| M14 × 1.5 | 14 | 1.5 mm |
Frequently asked questions · M14 × 2
Which drill is used for M14 × 2?
The consulted cutting-tap reference specifies 12 mm. Form tapping requires a separately checked hole size.
What is the pitch of M14 × 2?
Pitch is 2 mm. For a single-start thread this is also the axial travel per revolution.
Does the drill size determine finished tolerance?
No. The drill prepares the hole; the tool, process and specified tolerance class determine the fit to be inspected.
Sources and standard reference
Cutting-tap drill:
VÖLKEL · Metric cutting tapsISO 68-1 · Metric thread profile
Nominal reference data. The drawing, tolerance class and tool instructions govern hole preparation and acceptance. Do not automatically use a cutting-tap drill size for form tapping.
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