DTI washer for A490 screws

SKU: RODTI490

DTI washer for A490 screws

Galvanized structural DTI washer of different diameters for use with A490 hexagonal structural bolts. This type of washer is accompanied by a 2H nut.
$18.38$26.47
Tipo

DTI washer

Grado

ASTM-F959

Material

Medium carbon steel

Dimensiones

ASME B18.6.3

Acabado

Galvanized

Diámetro

1 1/4, 1 1/2

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F959 DTI (Direct Tension Indicators) washers or F959 washers are space washers which come to secure the tension of all 1/2, 1 1/4 and 1 1/2 structural hex bolts. Thanks to their performance and purpose, these washers are the best option to replace tension controlled bolts of these diameters, since the standard does not include these bolt diameters and A325 or A490 hex bolts must be used.

A490
Bolt Size B C A Number of Protrusions PTD* Max Part Numbers
Max OD Thickness After Compression ID Max Squirter Standard
Plain Galvanized Plain Galvanized
1⁄2 1.375 0.120 0.527 5 0.788 - - - -
5⁄8 1.625 0.140 0.658 5 0.956 - - - -
3⁄4 1.750 0.160 0.790 6 1.125 - - - -
7⁄8 2.000 0.180 0.921 6 1.294 - - - -
1 2.250 0.180 1.052 7 1.463 - - - -
11⁄8 2.500 0.180 1.183 7 1.631 - - - -
11⁄4 2.750 0.180 1.315 8 1.800 - - - -
13⁄8 3.000 0.180 1.446 8 1.969 - - - -
11⁄2 3.250 0.180 1.577 9 2.138 - - - -
Tipo

DTI washer

Grado

ASTM-F959

Material

Medium carbon steel

Dimensiones

ASME B18.6.3

Acabado

Galvanized

Diámetro

1 1/4, 1 1/2