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    ASTM A453 Grade 660 U Bolt

    Class A/B/C/D

    ASTM A453 Grade 660 Class A/B/C/D U-Bolts are recommended for use as supports or guides for piping for high temperature service. They are supplied with four hex nuts.
    Compliance : Federal Specification A-A-1192A Type 24, MSS-SP 69 Type 24, and BSPSS-BS3974.
    Side loads are given for the Figure 283 for a maximum temperature of 650ºF / 343ºC. When the loading condition requires the simultaneous application of a normal load and side load, the following interaction equation must be used to determine if the Figure 283 can be used.
    (Actual Load / Maximum Design Load) + (Actual Side Load / Maximum Side Load) The result of this equation cannot exceed the value of 1.0 if the Figure 283 is to be used.
    Ordering : Specify pipe size, figure number, and finish. For Metric applications Specify M283.

    ASTM A453 Grade 660 U Bolt
    ASTM A453 Grade 660 U Bolt

    Pipe Size Maximum Load Max. Side Load 650° F/ 343°C Weight Each
    650° F 343° C 750° F 399° C A B C D E
    1 ⁄ 2 485 435 63 1 ⁄ 4 7 ⁄ 8 1 1 ⁄ 8 2 3 ⁄ 4 2 1 ⁄ 8 0.11
    15 2157 1935 280 M6 22 29 70 54 0.05
    3 ⁄ 4 485 435 63 1 ⁄ 4 1 1 ⁄ 8 1 3 ⁄ 8 2 3 ⁄ 4 2 1 ⁄ 8 0.12
    20 2157 1935 280 M6 29 35 70 54 0.05
    1 485 435 63 1 ⁄ 4 1 3 ⁄ 8 1 5 ⁄ 8 2 3 ⁄ 4 2 1 ⁄ 8 0.12
    25 2157 1935 280 M6 35 41 70 54 0.05
    1 ⁄ 2 * 1200 1070 316 3 ⁄ 8 7 ⁄ 8 1 1 ⁄ 4 2 3 ⁄ 4 2 1 ⁄ 8 0.16
    15 5338 4760 1406 M10 22 32 70 54 0.07
    3 ⁄ 4 * 1200 1070 240 3 ⁄ 8 1 1 ⁄ 8 1 1 ⁄ 2 2 3 ⁄ 4 2 1 ⁄ 8 0.16
    20 5338 4760 1068 M10 29 38 70 54 0.07
    1 * 1200 1070 186 3 ⁄ 8 1 3 ⁄ 8 1 3 ⁄ 4 2 3 ⁄ 4 2 1 ⁄ 8 0.19
    25 5338 4760 827 M10 35 44 70 54 0.09
    1 1 ⁄ 4 1220 1090 194 3 ⁄ 8 1 3 ⁄ 4 2 1 ⁄ 8 2 7 ⁄ 8 2 1 ⁄ 8 0.28
    32 5427 4849 863 M10 44 54 73 54 0.13
    1 1 ⁄ 2 1220 1090 194 3 ⁄ 8 2 2 3 ⁄ 8 3 2 1 ⁄ 2 0.30
    40 5427 4849 863 M10 51 60 76 64 0.14
    2 1220 1090 194 3 ⁄ 8 2 1 ⁄ 2 2 7 ⁄ 8 3 1 ⁄ 4 2 1 ⁄ 2 0.33
    50 5427 4849 863 M10 64 73 83 64 0.15
    2 1 ⁄ 2 2260 2020 184 1 ⁄ 2 3 3 1 ⁄ 2 3 3 ⁄ 4 3 0.70
    65 10053 8986 819 M12 76 89 95 76 0.32
    3 2260 2020 184 1 ⁄ 2 3 5 ⁄ 8 4 1 ⁄ 8 4 3 0.78
    80 10053 8986 819 M12 92 105 102 76 0.35
    3 1 ⁄ 2 2260 2020 184 1 ⁄ 2 4 1 ⁄ 8 4 5 ⁄ 8 4 1 ⁄ 2 3 0.84
    90 10053 8986 819 M12 105 117 114 76 0.38
    4 2260 2020 184 1 ⁄ 2 4 5 ⁄ 8 5 1 ⁄ 8 4 1 ⁄ 2 3 0.90
    100 10053 8986 819 M12 117 130 114 76 0.41
    5 2260 2020 184 1 ⁄ 2 5 5 ⁄ 8 6 1 ⁄ 8 5 3 1.04
    125 10053 8986 819 M12 143 156 127 76 0.47
    6 3620 3230 277 5 ⁄ 8 6 3 ⁄ 4 7 3 ⁄ 8 6 1 ⁄ 8 3 3 ⁄ 4 2.0
    150 16103 14368 1232 M16 171 187 156 95 0.91
    8 3620 3230 277 5 ⁄ 8 8 3 ⁄ 4 9 3 ⁄ 8 7 1 ⁄ 8 3 3 ⁄ 4 2.3
    200 16103 14368 1232 M16 222 238 181 95 1.0
    10 5420 4830 400 3 ⁄ 4 10 7 ⁄ 8 11 5 ⁄ 8 8 3 ⁄ 8 4 4.9
    250 24110 21486 1779 M20 276 295 213 102 2.2
    12 7540 6730 422 7 ⁄ 8 12 7 ⁄ 8 13 3 ⁄ 4 9 5 ⁄ 8 4 1 ⁄ 4 7.7
    300 33541 29938 1877 M20 327 349 244 108 3.5
    14 7540 6730 422 7 ⁄ 8 14 1 ⁄ 8 15 10 1 ⁄ 4 4 1 ⁄ 4 8.3
    350 33541 29938 1877 M20 359 381 260 108 3.8
    16 7540 6730 422 7 ⁄ 8 16 1 ⁄ 8 17 11 1 ⁄ 4 4 1 ⁄ 4 9.2
    400 33541 29938 1877 M20 410 432 286 108 4.2
    18 9920 8850 1 18 1 ⁄ 8 19 1 ⁄ 8 12 5 ⁄ 8 4 3 ⁄ 4 13.5
    450 44128 39368 M24 460 486 321 121 6.1
    20 9920 8850 1 20 1 ⁄ 8 21 1 ⁄ 8 13 5 ⁄ 8 4 3 ⁄ 4 14.6
    500 44128 39368 M24 511 537 346 121 6.6
    24 9920 8850 1 24 1 ⁄ 8 25 1 ⁄ 8 15 5 ⁄ 8 4 3 ⁄ 4 16.9
    600 44128 39368 M24 613 638 397 121 7.7
    28 9920 8850 1 28 1 ⁄ 8 29 1 ⁄ 8 17 5 ⁄ 8 4 3 ⁄ 4 18
    700 44128 39368 M24 714 740 448 121 8.2
    30 9920 8850 1 30 1 ⁄ 8 31 1 ⁄ 8 18 5 ⁄ 8 4 3 ⁄ 4 19.1
    750 44128 39368 M24 765 791 473 121 8.7
    36 9920 8850 1 36 1 ⁄ 8 37 1 ⁄ 8 21 5 ⁄ 8 4 3 ⁄ 4 23.2
    900 44128 39368 M24 918 943 549 121 10.5

    ASTM A453 Grade 660 U Bolts Class

    ASTM A453 Grade 660 U Bolt Dimensional Standards

    Bolts DIN
    U Bolts 3570
    Specifications
    • ASTM A453
    • ASTM A638
    • EN 10269
    • EN 10083-3
    • ISO 3506-5
    • DIN 267
    Surface Treatments
    • Xylan 1070 / 1014 / 1400 / 1424
    • Xylar 2 / 101
    • SermaGard 1105 / 1280
    • Dacromet 320 / 500
    • TakeCoat 1000 Ceramic
    • Magnigard
    • MolyKote
    Certifications
    • ISO 9001 - 2015 Certified
    • PED 2014/68/EC
    • NACE MR0175/ISO 15156-2
    • NORSOK M-650
    • DFAR
    • MERKBLATT AD 2000 W2/W7/W10
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