Table 9. Dimensions for Compressible Washer-Type Direct Tension Indicators ANSI/ASME B18.2.6-2019 All Types Type A 325 Type A 490
Thickness, inch
Protrusion Tangential Diameter, inch B , Max.
Number of Protrusions (Equally Spaced)
Number of Protrusions (Equally Spaced)
Outside Diameter, inch C
Without Protrusion
With Protrusion
Bolt Size, inch
Inside Diameter, inch
Outside Diameter, inch
Min. 0.520 0.651 0.783 0.914 1.043 1.174 1.306 1.437 1.568
Max. 0.527 0.658 0.790 0.921 1.052 1.183 1.315 1.446 1.577
Min. 0.104 0.126 0.126 0.142 0.158 0.158 0.158 0.158 0.158
Max. 0.180 0.220 0.240 0.260 0.270 0.280 0.280 0.280 0.280
Min. 1.031 1.281 1.437 1.718 1.937 2.187 2.437 2.687 2.937
Max. 1.187 1.375 1.625 1.875 2.000 2.250 2.500 2.750 3.000
Min. 1.031 1.281 1.437 1.718 1.937 2.187 2.437 2.687 2.937
Max. 1.375 1.625 1.750 2.000 2.250 2.500 2.750 3.000 3.250
0.788 0.956 1.125 1.294 1.463 1.631 1.800 1.969 2.138
4 4 5 5 6 6 7 7 8
5 5 6 6 7 7 8 8 9
1 ∕ 5 ∕ 3 ∕ 7 ∕
2
8
4
8
1
1 1 ∕ 1 1 ∕ 1 3 ∕ 1 1 ∕
8
4
8
2
General Notes: (1) Dimensional Conformance : Direct tension indicators shall have the following characteristics inspected to ANSI/ASME B18.18-2017 to the inspection levels as follows: Inside diameter and Width across corners, inspection level B; Visual, inspection level C.
If verifiable in-process inspection is used, Dimensional Characteristics on page 1709. (2) Nonclipped washers may be rectangular providing neither side dimension is less than L . (3) Nominal washer sizes are intended for use with comparable nominal bolt diameters. (4) Additional requirements are in Compressible Washer-type Direct Tension Indicators on page 1711.
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