• Dimensional Conformance. Direct tension indicators shall have the following characteristics inspected to ASME B18.18.2, page M-11, to the inspection levels shown:
    Characteristic
    Inside Diameter - B (Inspection Level)
    Protrusion tangential diameter - B (Inspection Level)
    Visual - C (Inspection Level)
    If verifiable in-process inspection is used
  • Nominal direct tension indicator sizes are intended for use with fasteners of the same nominal diameter.
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Item #

Description

Type

Direct Tension Indicator Size

Min. (A)

Max. (B)

Min. (C)

No. of Protrusions (Equally Spaced)

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N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1/2" N/A Type A325 N/A 1/2 in N/A 0.523 in N/A 0.788 in N/A 1.167 in N/A 4
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1/2" N/A Type A490 N/A 1/2 in N/A 0.523 in N/A 0.788 in N/A 1.355 in N/A 5
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 5/8" N/A Type A325 N/A 5/8 in N/A 0.654 in N/A 0.956 in N/A 1.355 in N/A 4
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 5/8" N/A Type A490 N/A 5/8 in N/A 0.654 in N/A 0.956 in N/A 1.605 in N/A 5
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 3/4" N/A Type A325 N/A 3/4 in N/A 0.786 in N/A 1.125 in N/A 1.605 in N/A 5
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 3/4" N/A Type A490 N/A 3/4 in N/A 0.786 in N/A 1.125 in N/A 1.730 in N/A 6
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 7/8" N/A Type A325 N/A 7/8 in N/A 0.917 in N/A 1.294 in N/A 1.855 in N/A 5
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 7/8" N/A Type A490 N/A 7/8 in N/A 0.917 in N/A 1.294 in N/A 1.980 in N/A 6
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1" N/A Type A325 N/A 1 in N/A 1.048 in N/A 1.463 in N/A 1.980 in N/A 6
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1" N/A Type A490 N/A 1 in N/A 1.048 in N/A 1.463 in N/A 2.230 in N/A 7
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1-1/8" N/A Type A325 N/A 1-1/8 in N/A 1.179 in N/A 1.631 in N/A 2.230 in N/A 6
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1-1/8" N/A Type A490 N/A 1-1/8 in N/A 1.179 in N/A 1.631 in N/A 2.480 in N/A 7
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1-1/4" N/A Type A325 N/A 1-1/4 in N/A 1.311 in N/A 1.800 in N/A 2.480 in N/A 7
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1-1/4" N/A Type A490 N/A 1-1/4 in N/A 1.311 in N/A 1.800 in N/A 2.730 in N/A 8
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1-3/8" N/A Type A325 N/A 1-3/8 in N/A 1.442 in N/A 1.969 in N/A 2.730 in N/A 7
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1-3/8" N/A Type A490 N/A 1-3/8 in N/A 1.442 in N/A 1.969 in N/A 2.980 in N/A 8
N/A Compressible Washer - Type A325 Direct Tension Indicator, with 1-1/2" N/A Type A325 N/A 1-1/2 in N/A 1.573 in N/A 2.138 in N/A 2.980 in N/A 8
N/A Compressible Washer - Type A490 Direct Tension Indicator, with 1-1/2" N/A Type A490 N/A 1-1/2 in N/A 1.573 in N/A 2.138 in N/A 3.230 in N/A 9
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