Hole Information Notation in 3D Screen

Hole dimension notation follows the guidelines outlined below.

Straight Holes

[mm]

Through/BlindBlindThrough
PrecisionNoYesNoYes
Image
Straight hole: blind/no precision
Straight hole: blind/precision
Straight hole: through/no precision
Straight hole: through/precision
Viewer Notation
ø4↧15
ø4H7(+0.012/0) ↧15/Pilot Hole ↧18
ø4 THRU
ø4H7(+0.012/0) ↧15 THRU
Tapped Holes

[mm]

Through/Blind Blind Through
Coarse/Fine Coarse Fine Coarse Fine
Image
Tapped hole: blind
Tapped hole: through
Viewer Notation
M10↧25
M10x1.25 ↧25/Pilot Hole ↧30
M10 THRU
M10x1.25 THRU
Insert Holes

[mm]

Through/Blind Blind Through
Coarse/Fine Coarse Coarse
Image
Insert hole: blind
Insert hole: through
Viewer Notation
M10 INS-2D/Pilot Hole ↧30
M4 INS-2D THRU
1-Step Holes

[mm]

Through/BlindBlindThrough
PrecisionNoNo
Image
1-Step hole: blind
1-Step hole: through
Viewer Notation
凵 ø8 ↧3
凵 ø8 ↧3
ø4 ↧15
ø4 THRU

*If the upper or lower level is a precision/tapped hole, the value after the ↧ symbol indicates the effective depth.

2-Step Holes

[mm]

Through/BlindBlind
PrecisionNo
Image
2-Step hole: blind
Viewer Notation
凵ø8↧3
ø4 THRU
(On the opposite side)凵ø8↧3
Countersunk Holes

[mm]

Through/Blind
Through
Image
Countersunk hole: through
Viewer notation
ø8.6,
ø4.5

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