Hole Information Notation in 3D Screen

Hole dimension notation follows the guidelines outlined below.

Straight Holes

[mm]

Through/Blind Blind Through
Precision No Yes No Yes
Image Straight hole: blind/no precision Straight hole: blind/precision Straight hole: through/no precision Straight hole: through/precision
Viewer Notation ø4↧15 ø4H7 () ↧15 ø4 ø4H7 ()
Tapped Holes

[mm]

Through/Blind Blind Through
Coarse/Fine Coarse Fine Coarse Fine
Image Tapped hole: blind Tapped hole: through
Viewer Notation M10↧25 M10 × 1.25↧25 M10 M10 × 1.25
Insert Holes

[mm]

Through/Blind Blind Through
Coarse/Fine Coarse Coarse
Image Insert hole: blind Insert hole: through
Viewer Notation M10 INS-2D M10 INS-2D
1-Step Holes

[mm]

Through/Blind Blind Through
Precision No No
Image 1-Step hole: blind 1-Step hole: through
Viewer Notation 凵ø8↧3, ø4↧12 凵ø8↧3, ø4

*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/Blind Blind
Precision No
Image 2-Step hole: blind
Viewer Notation 凵ø8↧3, ø4
(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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