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    ASTM A453 Grade 660 Heavy Hex Nuts

    Class A/B/C/D

    ASTM A453 Grade 660 Heavy Hex Nuts Class A, B, C & D offered at TorqBolt are manufactured in accordance with ASME B18.2.6M, B18.2.4.6M, ASME B18.2.2, ISO 4033 standards in metric and imperial coarse and fine thread sizes with UNC, UN, UNF, UNEF, UNJF & ISO threads.

    ASTM A453 Grade 660 Heavy Hex Nuts Class

    Dimensions of Heavy Hex Nuts and Heavy Hex Jam Nuts in mm ASME B 18.2.2

    Dimensions of Heavy Hex Nuts and Heavy Hex Jam Nuts in mm ASME B 18.2.2

    Nominal Sizes Width Across Flats Width Across Corners Thickness Thickness
    F G H H1
    min max min max min max min max
    1/4 12,40 12,70 14,12 14,65 5,54 6,35 3,96 4,78
    5/16 13,86 14,29 15,80 16,51 7,11 7,97 4,72 5,59
    3/8 16,99 17,46 19,38 20,17 8,66 9,58 5,49 6,40
    7/16 18,49 19,05 21,08 22,00 10,24 11,20 6,27 7,24
    1/2 21,59 22,22 24,61 25,65 11,78 12,80 7,04 8,05
    9/16 23,08 23,81 26,34 27,50 13,36 14,42 7,80 8,86
    5/8 26,18 26,98 29,84 31,16 14,90 16,02 8,56 9,68
    3/4 30,78 31,75 35,10 36,65 18,03 19,25 10,11 11,33
    7/8 35,40 36,51 40,36 42,16 21,15 22,48 11,63 12,95
    1 40,00 41,27 45,61 47,65 24,28 25,70 13,18 14,61
    1 1/8 44,60 46,03 50,85 53,13 27,40 28,93 14,71 16,23
    1 1/4 49,22 50,80 56,11 58,65 30,14 31,77 17,45 19,08
    1 3/8 53,82 55,56 61,37 64,16 33,27 35,00 18,97 20,70
    1 1/2 58,42 60,32 66,60 69,64 36,39 38,22 20,52 22,35
    1 5/8 63,01 65,09 71,83 75,15 39,52 41,45 22,05 23,98
    1 3/4 67,61 69,85 77,09 80,64 42,64 44,67 23,60 25,63
    1 7/8 72,23 74,61 82,34 86,15 45,77 47,90 25,12 27,25
    2 76,83 79,37 87,60 91,64 48,89 51,13 26,67 28,91
    2 1/4 86,00 88,90 98,09 102,65 54,71 57,17 29,34 31,78
    2 1/2 95,25 98,42 108,58 113,63 60,98 63,62 35,59 38,23
    2 3/4 104,44 107,95 119,07 124,63 67,23 70,27 38,66 41,50
    3 113,66 117,47 129,59 135,63 73,48 76,53 41,73 44,78
    3 1/4 122,88 127,00 140,08 146,65 79,34 82,60 44,40 47,65
    3 1/2 132,08 136,52 150,57 157,65 85,60 89,05 47,50 50,95
    3 3/4 141,27 146,05 161,06 168,65 91,85 95,50 50,55 54,20
    4 150,50 155,57 171,57 179,65 98,10 101,95 53,64 57,51
    4 1/4 159,71 165,10 182,07 190,65 104,35 108,40 - -
    4 1/2 168,91 174,62 192,56 201,65 110,60 114,85 - -
    4 3/4 178,11 184,15 203,05 212,64 116,84 121,31 - -
    5 187,33 193,67 213,57 223,64 123,09 127,76 - -
    5 1/4 196,53 203,20 224,05 234,64 129,34 134,21 - -
    5 1/2 205,74 212,73 234,54 245,63 135,59 140,67 - -
    5 3/4 214,95 222,25 245,04 256,63 141,83 147,12 - -
    6 224,16 231,78 255,54 267,63 148,08 153,57 - -

    Dimensions of Hex Nuts With Metric Coarse and Fine Pitch Thread

    Dimensions of Hex Nuts With Metric Coarse and Fine Pitch Thread
    Dimensions of Hex Nuts With Metric Coarse and Fine Pitch Thread

    Nominal Size Width Across Flats Width Across Corners DIN 934 H=D DIN 934 DIN 936
    F G H H1 H2
    min max min max min max min max min max
    M 6 9,78 10,00 11,05 11,55 5,70 6,00 4,70 5,00 - -
    M 8 12,73 13,00 14,38 15,00 7,64 8,00 6,14 6,50 4,70 5,00
    M 10 16,73 17,00 18,90 19,60 9,64 10,00 7,64 8,00 5,70 6,00
    M 12 18,67 19,00 21,10 21,90 11,57 12,00 9,64 10,00 6,64 7,00
    M 14 21,67 22,00 24,49 25,40 13,57 14,00 10,30 11,00 7,42 8,00
    M 16 23,67 24,00 26,75 27,70 15,57 16,00 12,30 13,00 7,42 8,00
    M 18 26,67 27,00 30,14 31,10 17,57 18,00 14,30 15,00 8,42 9,00
    M 20 29,67 30,00 33,53 34,60 19,48 20,00 14,90 16,00 8,10 9,00
    M 22 31,61 32,00 35,72 36,90 21,48 22,00 16,90 18,00 9,10 10,00
    M 24 35,58 36,00 39,98 41,50 23,48 24,00 17,70 19,00 9,10 10,00
    M 27 40,38 41,00 45,63 47,30 26,48 27,00 20,70 22,00 10,90 12,00
    M 30 45,38 46,00 51,28 53,10 29,48 30,00 22,70 24,00 10,90 12,00
    M 33 49,38 50,00 55,80 57,70 32,38 33,00 24,70 26,00 12,90 14,00
    M 36 54,26 55,00 61,31 63,50 35,38 36,00 27,40 29,00 12,90 14,00
    M 39 59,26 60,00 66,96 69,30 38,38 39,00 29,40 31,00 14,90 16,00
    M 42 64,26 65,00 72,61 75,00 41,38 42,00 32,40 34,00 14,90 16,00
    M 45 69,26 70,00 78,26 80,80 44,38 45,00 34,40 36,00 16,90 18,00
    M 48 74,26 75,00 83,91 86,50 47,38 48,00 36,40 38,00 16,90 18,00
    M 52 79,26 80,00 89,56 92,40 51,26 52,00 40,40 42,00 18,70 20,00
    M 56 84,13 85,00 95,07 98,10 55,26 56,00 43,40 45,00 20,70 22,00
    M 60 89,13 90,00 100,72 103,90 59,26 60,00 46,40 48,00 22,70 24,00
    M 64 94,13 95,00 106,37 109,70 63,26 64,00 49,10 51,00 24,70 26,00
    M 68 99,13 100,00 112,02 115,50 67,26 68,00 52,10 54,00 24,70 26,00
    M 72 104,13 105,00 117,67 121,25 71,26 72,00 56,10 58,00 26,70 28,00
    M 76 109,13 110,00 123,32 127,00 75,26 76,00 59,10 61,00 28,70 30,00
    M 80 114,13 115,00 128,97 132,80 79,26 80,00 62,10 64,00 30,40 32,00
    M 85 119,13 120,00 134,62 138,60 84,13 85,00 66,10 68,00 32,40 34,00
    M 90 129,00 130,00 145,77 150,10 89,13 90,00 70,10 72,00 34,40 36,00
    M 95 134,00 135,00 151,42 155,90 94,13 95,00 74,10 76,00 36,40 38,00
    M 100 144,00 145,00 162,72 167,40 99,13 100,00 78,10 80,00 38,40 40,00
    M105 147,50 150,00 168,37 173,21 102,80 105,00 81,80 84,00 40,40 42,00
    M110 152,50 155,00 172,32 178,98 107,80 110,00 85,80 88,00 42,40 44,00
    M115 162,50 165,00 185,32 190,53 112,80 115,00 89,80 92,00 44,40 46,00
    M120 167,50 170,00 190,97 196,30 117,80 120,00 93,80 96,00 46,40 48,00
    M125 177,50 180,00 200,57 207,85 122,50 125,00 97,80 100,00 48,40 50,00
    M130 180,40 185,00 207,75 213,62 127,50 130,00 101,80 104,00 50,10 52,00
    M135 185,40 190,00 213,40 219,40 132,50 135,00 105,80 108,00 52,10 54,00
    M140 195,40 200,00 220,80 230,95 137,50 140,00 109,80 112,00 54,10 56,00
    M145 205,40 210,00 236,00 242,49 142,50 145,00 113,80 116,00 56,10 58,00
    M150 205,40 210,00 236,00 242,49 147,50 150,00 117,80 120,00 58,10 60,00

    ASTM A453 Grade 660 Heavy Hex Nuts Dimensional Standards

    Nuts DIN ISO BS ASME PN UNI SAE IS
    Mertic Imperial
    Heavy Hex Flat Jam Nuts - - - - B18.2.2 - - - -
    Heavy Hex Flat Nuts - - - - B18.2.2 - - - -
    Heavy Hex Jam Nuts - - - - B18.2.2 - - - -
    Heavy Hex Nuts - - - B18.2.4.6M/B18.2.6M B18.2.2 - - - -
    Heavy Hex Slotted Nuts - - - - B18.2.2 - - - -
    Heavy Hexagon Full Nuts - - - - - - 5587 - -
    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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