Standards for Different Hole and Pocket Types

Straight Holes

Holes that are machined with drills or end mills that do not have a specified precision are referred to as “straight holes” on the cutting service. Tools used for machining have different auto-quotable machining depths.

The maximum value is included as an approximation.

The maximum value may vary depending on other quoted conditions such as shape and material. Thank you for your understanding.

Drill Machining

[mm]

Steel, Pre-Hardened Steel, Aluminum, Stainless steel
Diameter Machining Depth (Approximate)
2.0≦Diameter≦3.2 150
3.3≦Diameter≦4.2 180
4.3≦Diameter≦6.9 200
7.0≦Diameter≦9.9 220
10≦Diameter≦20 300

[mm]

Resin
Diameter Machining Depth (Approximate)
2 ≤ Diameter * 15
2.1 ≤ Diameter ≤ 3.0 (Increments of 0.1) ≤ Diameter * 14
3.1 ≤ Diameter ≤ 4.2 (Increments of 0.1) ≤ Diameter * 13
4.3 ≤ Diameter ≤ 5.7 (Increments of 0.1) ≤ Diameter * 12
5.8 ≤ Diameter ≤ 6.8 (Increments of 0.1) ≤ Diameter * 11
6.9 ≤ Diameter ≤ 9.7 (Increments of 0.1) ≤ Diameter * 10
9.8 ≤ Diameter ≤ 13 (Increments of 0.1) ≤ Diameter * 9
End Mill Machining

The machining depth of diameters without the drill is as follows:

[mm]

Steel, Pre-Hardened Steel
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤40
3.5 4.5 ≤12 11 13 ≤50
4.5 6 ≤16 13 17 ≤60
6 7 ≤20 17 21 ≤80
7 9 ≤30 21 No Restrictions ≤100

[mm]

Aluminum
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤40
3.5 4.5 ≤12 11 13 ≤50
4.5 6 ≤16 13 17 ≤60
6 7 ≤25 17 21 ≤80
7 9 ≤30 21 No Restrictions ≤100

[mm]

Stainless steel
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤32
3.5 4.5 ≤12 11 13 ≤40
4.5 6 ≤16 13 17 ≤48
6 7 ≤20 17 21 ≤64
7 9 ≤24 21 No Restrictions ≤80

[mm]

Resin
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤7.5 11 13 ≤30
3.5 4.5 ≤10 13 18 ≤40
4.5 7 ≤15 18 No Restrictions ≤60
7 11 ≤20 –

[mm]

  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤14 9 11 ≤34
3.5 4.5 ≤17 11 13 ≤44
4.5 6 ≤19 13 17 ≤54
6 7 ≤22 17 21 ≤64
7 9 ≤24 21 No Restrictions ≤74
  • Example: Drilling a straight hole with a diameter of 12.9 in Low Carbon Steel material
  • The tool to be used is a drill and the machining depth is up to 200 mm.
  • Example 2: Drilling a straight hole with a diameter of 13.1 in Low Carbon Steel material
  • The tool to be used is an end mill and the machining depth is up to 48 mm.

Auto-Quotable Accuracy Ranges

A straight hole can be changed to a precision hole by setting the “Hole Diameter Tolerance Type.” By changing to a precision hole, the accuracy and effective depth for the diameter can be specified.

End Mill Machining

[mm]

Diameter Accuracy Ranges
> ≤ Fit Tolerance Bidirectional Tolerance Minimum Value Unidirectional Tolerance Minimum Value (Range)
– 3 Grade IT7 or higher 0.005 0.01
3 6 0.006 0.012
6 10 0.008 0.015
10 18 0.009 0.018
18 30 0.011 0.021
30 50 0.013 0.025
50 80 0.015 0.03
80 120 0.018 0.035
120 180 0.02 0.04
180 250 0.023 0.046
250 315 0.026 0.052
315 400 0.029 0.057
400 500 0.032 0.064
Auto-Quotable Effective Depths

[mm]

Steel, Pre-Hardened Steel
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤40
3.5 4.5 ≤12 11 13 ≤50
4.5 6 ≤16 13 17 ≤60
6 7 ≤20 17 21 ≤80
7 9 ≤30 21 No Restrictions ≤100

[mm]

Aluminum
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤40
3.5 4.5 ≤12 11 13 ≤50
4.5 6 ≤16 13 17 ≤60
6 7 ≤25 17 21 ≤80
7 9 ≤30 21 No Restrictions ≤100

[mm]

Stainless steel
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤10 9 11 ≤32
3.5 4.5 ≤12 11 13 ≤40
4.5 6 ≤16 13 17 ≤48
6 7 ≤20 17 21 ≤64
7 9 ≤24 21 No Restrictions ≤80

[mm]

Resin
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≤5 11 13 ≤20
3.5 4.5 ≤6 13 18 ≤24
4.5 7 ≤8 18 21 ≤36
7 10 ≤12 21 No Restrictions ≤40
10 11 ≤16 –

[mm]

  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
Diameter Machining Depth (Approximate) Diameter Machining Depth (Approximate)
> ≤ > ≤
2.999 3.5 ≦7 9 11 ≦31
3.5 4.5 ≦11 11 13 ≦39
4.5 6 ≦15 13 17 ≦47
6 7 ≦19 17 21 ≦63
7 9 ≦23 21 No Restrictions ≦73

The auto-quotable effective depths are different due to reamer machining when fit tolerance is H7 for the following diameters.

[mm]

Diameters Using Reamer Effective Depth (Approximate)
  • 1018 Carbon Steel
  • 1049 Carbon Steel (or equivalent)
 Pre-Hardened Steel
  • 1018 Carbon Steel
  • (annealed material)
 Stainless steel Aluminum Resin
  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
2 ≤ Diameter * 10 ≤ Diameter * 9 ≤ Diameter * 6 ≤ Diameter * 9 ≤ Diameter * 10 ≤ Diameter * 12 ≤ Diameter * 6
3 ≤ Diameter * 9 ≤ Diameter * 8 ≤ Diameter * 9 ≤ Diameter * 12 ≤ Diameter * 8
4 ≤ Diameter * 10 ≤ Diameter * 10 ≤ Diameter * 8 ≤ Diameter * 10 ≤ Diameter * 10
5 ≤ Diameter * 10 ≤ Diameter * 15
6 ≤ Diameter * 8
7 ≤ Diameter * 6
8/9 ≤ Diameter * 5
10/11 ≤100 ≤ Diameter * 5
12/13
14/15/16 ≤ Diameter * 9 ≤ Diameter * 9 ≤ Diameter * 9 ≤ Diameter * 9
17/18/19/20 ≤ Diameter * 8 ≤ Diameter * 8 ≤ Diameter * 8 ≤ Diameter * 8

Tapped Holes

The available tap sizes and specifiable effective depths for the cutting service are as follows.

If the tap flute is shallow, it may not be possible to secure 2 threads due to the head shape and point cut of the tool. To secure the fastening force, please set 3 or more threads.
Quotable Tap Effective Depths

[mm]

Tap Diameter Pitch Coarse Fine
  • Effective Depth (approximate)
  • (Steel except 1018 Carbon Steel annealed), Aluminum,
  • Stainless steel
  • Effective Depth (approximate)
  • 1018 Carbon Steel
  • (annealed material)
 Effective Depth (Approximate) (Pre-Hardened Steel) Effective Depth (Approximate) (Resin)
  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
M2 0.25 ✓ ≤ Tap Diameter * 5 ≤ Tap Diameter * 3 ≤ Tap Diameter * 4 ≤ Tap Diameter * 6 ≤ Tap Diameter * 2
0.4 ✓
M2.5 0.35 ✓ ≤ Tap Diameter * 3 ≤ Tap Diameter * 5
0.45 ✓
M3 0.35 ✓ ≤ Tap Diameter * 4 ≤ Tap Diameter * 5 ≤ Tap Diameter * 4 ≤ Tap Diameter * 3
0.5 ✓ ≤ Tap Diameter * 5
M4 0.5 ✓ ≤ Tap Diameter * 5 ≤ Tap Diameter * 4
0.7 ✓ ≤ Tap Diameter * 5
M5 0.5 ✓ ≤ Tap Diameter * 4
0.8 ✓ ≤ Tap Diameter * 5
M6 0.75 ✓ ≤ Tap Diameter * 4
1 ✓ ≤ Tap Diameter * 5
M8 0.75 ✓ ≤ Tap Diameter * 4
1 ✓
1.25 ✓ ≤ Tap Diameter * 5
M10 0.75 ✓ ≤ Tap Diameter * 4
1 ✓
1.25 ✓
1.5 ✓ ≤ Tap Diameter * 5
M12 1 ✓ ≤ Tap Diameter * 4
1.25 ✓
1.5 ✓
1.75 ✓ ≤ Tap Diameter * 4
M14 1 ✓ ≤ Tap Diameter * 3
1.25 ✓
1.5 ✓
2 ✓ ≤ Tap Diameter * 2
M16 1 ✓ ≤ Tap Diameter * 3
1.5 ✓
2 ✓

Insert Holes

The available insert sizes and specifiable effective depths for the cutting service are as follows.

Quotable Sizes

[mm]

Tap Diameter Pitch Coarse Nominal length (Aluminum and resin)
  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
M2 0.4 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M2.5 0.45 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M3 0.5 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M4 0.7 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M5 0.8 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M6 1 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M8 1.25 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M10 1.5 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D
M12 1.75 ✓ 0.5D, 1D, 1.5D, 2D 1D,1.5D,2D

1-Step Holes

For 1-step holes, the upper and lower step can be different combinations of hole and diameter tolerance types. The precision and standards for tapped and precision holes are described above. *Insert holes can also be selected wherever tap holes are selectable. (Only for aluminum and resin)

Upper Step Straight hole Straight hole Straight hole Precision hole Precision hole Precision hole Tapped hole Tapped hole
Lower Step Straight hole Precision hole Tapped hole Straight hole Precision hole Tapped hole Straight hole Tapped pilot hole

*When the upper step is a tapped hole, a cone shape at the border between the upper and lower steps may occur while machining the pilot hole.

2-Step Holes

For 2-step holes, the upper, middle and lower step can be different combinations of hole diameter tolerance types and hole types. The precision and standards for tapped and precision holes are described above.
*Insert holes can also be selected wherever tap holes are selectable. (Only for aluminum and resin)

Upper Step Straight hole Straight hole Straight hole Straight hole Straight hole Straight hole Straight hole
Middle Step Straight hole Straight hole Straight hole Precision hole Precision hole Tapped hole Tapped hole
Lower Step Straight hole Precision hole Tapped hole Precision hole Straight hole Precision hole Straight hole
Upper Step Straight hole Tapped hole Tapped hole Tapped hole Tapped hole Tapped hole Tapped hole Precision hole
Middle Step Tapped pilot hole Straight hole Straight hole Straight hole Tapped pilot hole Tapped pilot hole Tapped pilot hole Straight hole
Lower Step Tapped hole Straight hole Precision hole Tapped hole Straight hole Precision hole Tapped hole Straight hole
Upper Step Precision hole Precision hole Precision hole Precision hole Precision hole Precision hole Precision hole
Middle Step Straight hole Straight hole Precision hole Precision hole Tapped hole Tapped hole Tapped pilot hole
Lower Step Precision hole Tapped hole Precision hole Straight hole Precision hole Straight hole Tapped hole

*When the upper or lower step is a tapped hole, a cone shape at the border between it and the middle step may occur while machining the pilot hole.

Countersunk Holes

Countersunk holes are machined as per the model.

Slotted Holes

The auto-quotable machining depth varies depending on the width.

Auto-Quotable Effective Depths

[mm]

Steel, Pre-Hardened Steel
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤40
3 4 ≤12 10 12 ≤50
4 5 ≤16 12 16 ≤60
5 6 ≤20 16 20 ≤80
6 8 ≤30 20 No Restrictions ≤100

[mm]

Aluminum
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤12.5 8 10 ≤40
3 4 ≤15 10 12 ≤50
4 5 ≤20 12 16 ≤60
5 6 ≤25 16 20 ≤80
6 8 ≤30 20 No Restrictions ≤100

[mm]

Stainless steel
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤32
3 4 ≤12 10 12 ≤40
4 5 ≤16 12 16 ≤48
5 6 ≤20 16 20 ≤64
6 8 ≤24 20 No Restrictions ≤80

[mm]

Resin
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤7.5 10 12 ≤30
3 4 ≤10 12 18 ≤40
4 6 ≤15 18 No Restrictions ≤60
6 10 ≤20 –

[mm]

  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤14 8 10 ≤34
3 4 ≤17 10 12 ≤44
4 5 ≤19 12 16 ≤54
5 6 ≤22 16 20 ≤64
6 8 ≤24 20 No Restrictions ≤74

Precision Slotted Holes

A slotted hole can be changed to a precision slotted hole by setting the “Hole Diameter Tolerance Type.” You can specify precision for pitch direction of precision slotted holes within the following ranges. Effective depth tolerance is the model depth, regardless of pitch.
Precision Ranges that can be Specified

[mm]

Width Accuracy Ranges
> ≤ Fit Tolerance Minimum Bidirectional Tolerance Minimum Unidirectional Tolerance Range
– 3 Grade IT7 or higher 0.005 0.01
3 6 0.006 0.012
6 10 0.008 0.015
10 18 0.009 0.018
18 30 0.011 0.021
30 50 0.013 0.025
50 80 0.015 0.03
80 120 0.018 0.035
120 180 0.02 0.04
180 250 0.023 0.046
250 315 0.026 0.052
315 400 0.029 0.057
400 500 0.032 0.064
Auto-Quotable Effective Depths

[mm]

Steel, Pre-Hardened Steel
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤40
3 4 ≤12 10 12 ≤50
4 5 ≤16 12 16 ≤60
5 6 ≤20 16 20 ≤80
6 8 ≤30 20 No Restrictions ≤100

[mm]

Aluminum
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤12.5 8 10 ≤40
3 4 ≤15 10 12 ≤50
4 5 ≤20 12 16 ≤60
5 6 ≤25 16 20 ≤80
6 8 ≤30 20 No Restrictions ≤100

[mm]

Stainless steel
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤32
3 4 ≤12 10 12 ≤40
4 5 ≤16 12 16 ≤48
5 6 ≤20 16 20 ≤64
6 8 ≤24 20 No Restrictions ≤80

[mm]

Resin
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤5 10 12 ≤20
3 4 ≤6 12 16 ≤24
4 6 ≤8 16 18 ≤32
6 8 ≤12 18 20 ≤36
8 10 ≤16 20 No Restrictions ≤40

[mm]

  • Polished flat bar
  • (1018 Carbon Steel, 1045 Carbon Steel, 304 Stainless Steel, 6063 Aluminum Alloy)
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤7 8 10 ≤31
3 4 ≤11 10 12 ≤39
4 5 ≤15 12 16 ≤47
5 6 ≤19 16 20 ≤63
6 8 ≤23 20 No Restrictions ≤73

Pockets

All machining points that do not fall under the category of holes or slotted holes are classified as pockets.
Pockets also have an auto-quote range for width, depth and R size (if any).
For shapes with a chamfer of C15 or less that can be machined with a chamfer cutter, there is no depth limit.

Pocket Width/Depth Compatibility Table

[mm]

Steel, Pre-Hardened Steel
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤40
3 4 ≤12 10 12 ≤50
4 5 ≤16 12 16 ≤60
5 6 ≤20 16 20 ≤80
6 8 ≤30 20 No Restrictions ≤100

[mm]

Stainless steel
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤32
3 4 ≤12 10 12 ≤40
4 5 ≤16 12 16 ≤48
5 6 ≤20 16 20 ≤64
6 8 ≤24 20 No Restrictions ≤80

[mm]

Stainless steel
Width Machining Depth (Approximate) Width Machining Depth (Approximate)
> ≤ > ≤
2.5 3 ≤10 8 10 ≤32
3 4 ≤12 10 12 ≤40
4 5 ≤16 12 16 ≤48
5 6 ≤20 16 20 ≤64
6 8 ≤24 20 No Restrictions ≤80

[mm]

Resin
Width Effective Depth (Approximate) Width Effective Depth (Approximate)
> ≤ > ≤
2.5 3 ≤7.5 10 12 ≤30
3 4 ≤10 12 18 ≤40
4 6 ≤15 18 No Restrictions ≤60
6 10 ≤20
Pocket R/Height Compatibility Table

[mm]

Steel, Pre-Hardened Steel
R Machining Depth (Approximate) R Machining Depth (Approximate)
> ≤ > ≤
0.74 1.5 ≤15 5 6 ≤50
1.5 3 ≤20 6 8 ≤60
3 4 ≤30 8 10 ≤80
4 5 ≤40 10 No Restrictions ≤100

[mm]

Aluminum
R Machining Depth (Approximate) R Machining Depth (Approximate)
> ≤ > ≤
0.74 1.5 ≤15 5 6 ≤50
1.5 3 ≤20 6 8 ≤60
3 4 ≤30 8 10 ≤80
4 5 ≤40 10 No Restrictions ≤150

[mm]

Stainless steel
R Machining Depth (Approximate) R Machining Depth (Approximate)
> ≤ > ≤
0.74 1.5 ≤15 5 6 ≤40
1.5 3 ≤20 6 8 ≤48
3 4 ≤24 8 10 ≤64
4 5 ≤32 10 No Restrictions ≤80

[mm]

Resin
R Machining Depth (Approximate) R Machining Depth (Approximate)
> ≤ > ≤
1.249 1.5 ≤7.5 5 6 ≤30
1.5 2 ≤10 6 10 ≤40
2 3 ≤15 10 No Restrictions ≤50
3 5 ≤20

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