EN 14399-9: Dimensions of Direct Tension Indicators washers - Andrews Fasteners - CE Approved Bolts, Nuts & Washers
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EN 14399-9: Dimensions of Direct Tension Indicators washers

DTI washer Dimensions

Direct Tension Indicators Washer – dimensions

Dimensions of compressible washer-type direct tension indicator
According to EN 14399-9:2009, Table 2

Size Internaldiameter

diameter

External

diameter

Thickness Height over

protrusion

 

Height of

protrusions

 

Protrusion

tangential

diameter

Protrusion

internal

diameter

d1 d2 h1 h2 h3 d3 d4
min max min max min max min max min
M12 12.75 12.85 26.0 32.5 2.50 5.50 0.80 20 13.85
M16 16.75 16.85 35.0 36.8 3.00 6.00 0.80 25 17.85
M20 20.95 21.05 41.0 46.0 3.50 6.50 0.80 29 22.05
M22 23.05 23.15 46.5 50.6 4.00 7.00 0.80 33 24.15
M24 25.15 25.25 50.0 55.2 4.00 7.00 0.80 38 26.25
M27 28.30 28.40 54.0 62.1 4.00 7.00 0.80 43 29.40
M30 31.45 31.55 59.0 69.0 4.00 7.00 0.80 46.5 32.55
M36 37.75 37.85 78.0 83.0 4.00 7.50 0.80 56 38.85

Dimensions in millimeters

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