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MARYLAND METRICS
THREAD DATA CHARTS

Knuckle Thread DIN 405


This thread is used by fire departments and for fittings.
Thread Size Nominal
Diameter
Bolt Thread
Minor Diameter
mm
Nut Thread
Minor Diameter
mm
Pitch
mm
TPI
Rd 8 x 1/10" 8,254 5,460 5,714 2,540 10
Rd 9 x 1/10" 9,254 6,460 6,714 2,540 10
Rd 10 x 1/10" 10,254 7,460 7,714 2,540 10
Rd 11 x 1/10" 11,254 8,460 8,714 2,540 10
Rd 12 x 1/10" 12,254 9,460 9,714 2,540 10
Rd 14 x 1/8" 14,318 10,825 11,142 3,175 8
Rd 16 x 1/8" 16,318 4,166 12,825 3,175 8
Rd 18 x 1/8" 18,318 14,825 15,142 3,175 8
Rd 20 x 1/8" 20,318 16,825 17,142 3,175 8
Rd 22 x 1/8" 22,318 18,825 19,142 3,175 8
Rd 24 x 1/8" 24,318 20,825 21,142 3,175 8
Rd 28 x 1/8" 28,318 24,825 25,142 3,175 8
Rd 30 x 1/8" 30,318 26,825 27,142 3,175 8
Rd 32 x 1/8" 32,318 28,825 29,142 3,175 8
Rd 34 x 1/8" 34,318 30,825 31,142 3,175 8
Rd 36 x 1/8" 36,318 32,825 33,142 3,175 8
Rd 38 x 1/8" 38,318 34,825 35,142 3,175 8
Rd 40 x 1/6" 40,423 35,767 36,190 4,233 6
Rd 42 x 1/6" 42,423 37,767 38,190 4,233 6
Rd 44 x 1/6" 44,423 39,767 40,190 4,233 6
Rd 46 x 1/6" 46,423 41,767 42,190 4,233 6
Rd 48 x 1/6" 48,423 43,767 44,190 4,233 6
Rd 50 x 1/6" 50,423 45,767 46,190 4,233 6
Rd 52 x 1/6" 52,423 47,767 48,100 4,233 6
Rd 55 x 1/6" 55,423 50,767 51,190 4,233 6
Rd 58 x 1/6" 58,423 53,767 54,190 4,233 6
Rd 60 x 1/6" 60,423 55,767 56,190 4,233 6
Rd 62 x 1/6" 62,423 57,767 58,190 4,233 6
Rd 65 x 1/6" 65,423 60,767 61,190 4,233 6
Rd 68 x 1/6" 68,423 63,767 64,190 4,233 6
Rd 70 x 1/6" 70,423 65,767 66,190 4,233 6
Rd 72 x 1/6" 72,423 67,767 68,190 4,233 6
Rd 75 x 1/6" 75,423 70,767 71,190 4,233 6
Rd 78 x 1/6" 78,423 73,767 74,190 4,233 6
Rd 80 x 1/6" 80,423 75,767 76,190 4,233 6
Rd 82 x 1/6" 82,423 77,767 78,190 4,233 6
Rd 85 x 1/6" 85,423 80,767 81,190 4,233 6
Rd 88 x 1/6" 88,423 83,767 84,190 4,233 6
Rd 90 x 1/6" 90,423 85,767 86,190 4,233 6
Rd 92 x 1/6" 92,423 87,767 88,190 4,233 6
Rd 95 x 1/6" 95,423 90,767 91,190 4,233 6
Rd 98 x 1/6" 98,423 93,767 94,190 4,233 6
Rd 100 x 1/6" 100,423 95,767 96,190 4,233 6
Rd 105 x 1/4" 105,635 98,650 99,285 6,350 4
Rd 110 x 1/4" 110,635 103,650 104,285 6,350 4
Rd 115 x 1/4" 115,635 108,650 109,285 6,350 4
Rd 120 x 1/4" 120,635 113,650 114,285 6,350 4
Rd 120 x 1/4" 120,635 113,650 114,285 6,350 4
Rd 125 x 1/4" 125,635 118,650 119,285 6,350 4
Rd 130 x 1/4" 130,635 123,650 124,285 6,350 4
Rd 135 x 1/4" 135,635 128,650 129,285 6,350 4
Rd 140 x 1/4" 140,635 133,650 134,285 6,350 4
Rd 145 x 1/4" 145,635 138,650 139,285 6,350 4
Rd 150 x 1/4" 150,635 143,650 144,285 6,350 4
Rd 155 x 1/4" 155,635 148,650 149,285 6,350 4
Rd 160 x 1/4" 160,635 153,650 154,285 6,350 4
Rd 165 x 1/4" 165,635 158,650 159,285 6,350 4
Rd 170 x 1/4" 170,635 163,650 164,285 6,350 4
Rd 175 x 1/4" 175,635 168,650 169,285 6,350 4
Rd 180 x 1/4" 180,635 173,650 174,285 6,350 4
Rd 185 x 1/4" 185,635 178,650 179,285 6,350 4
Rd 190 x 1/4" 190,635 183,650 184,285 6,350 4
Rd 195 x 1/4" 195,635 188,650 189,285 6,350 4
Rd 200 x 1/4" 200,635 193,650 194,285 6,350 4
Knuckle Thread DIN 405
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  Knuckle Thread DIN 20400


This thread is used in the mining industry for increased bearing depth.
Bolt Thread
Minor Diameter
mm
Bolt Tapping
Drill Size
mm
Pitch
mm
Nut Thread
Minor Diameter
mm
Nut Tapping
Drill Size
mm
Rd 10 6,700 3,000 10,300 7,000
Rd 12 8,700 3,000 12,300 9,000
Rd 14 10,700 3,000 14,300 11,000
Rd 16 11,600 4,000 16,400 12,000
Rd 18 13,600 4,000 18,400 14,000
Rd 20 15,600 4,000 20,400 16,000
Rd 22 17,600 4,000 22,400 18,000
Rd 25 20,600 4,000 25,400 21,000
Rd 28 23,600 4,000 28,400 24,000
Rd 32 27,600 4,000 32,400 28,000
Rd 36 30,500 5,000 36,500 31,000
Rd 40 34,500 5,000 40,500 35,000
Rd 42 36,500 5,000 42,500 37,000
Rd 45 39,500 5,000 45,500 40,000
Rd 48 42,500 5,000 48,500 43,000
Rd 50 44,500 5,000 50,500 45,000
Rd 53 47,500 5,000 53,500 48,000
Rd 56 50,500 5,000 56,500 51,000
Rd 60 53,400 6,000 60,600 54,000
Rd 63 56,400 6,000 63,600 57,000
Rd 67 60,400 6,000 67,600 61,000
Rd 70 63,400 6,000 70,600 64,000
Rd 75 68,400 6,000 75,600 69,000
Rd 80 73,400 6,000 80,600 74,000
Rd 85 78,400 6,000 85,600 79,000
Rd 90 81,200 8,000 90,800 82,000
Rd 95 86,200 8,000 95,800 87,000
Rd 100 91,200 8,000 100,800 92,000
Rd 106 97,200 8,000 106,800 98,000
Rd 112 103,200 8,000 112,800 104,000
Rd 118 109,200 8,000 118,800 110,000
Rd 125 116,200 8,000 125,800 117,000
Rd 123 121,000 10,000 133,000 122,000
Rd 140 129,000 10,000 141,000 130,000
Rd 150 139,000 10,000 151,000 140,000
Rd 160 149,000 10,000 161,000 150,000
Rd 170 159,000 10,000 171,000 160,000
Rd 180 166,800 12,000 181,200 168,000
Rd 190 176,800 12,000 191,200 178,000
Rd 200 186,800 12,000 201,200 188,000
Rd 212 189,800 12,000 213,200 200,000
Rd 224 210,800 12,000 225,200 212,000
Rd 236 218,400 16,000 237,600 220,000
Rd 250 232,400 16,000 251,600 234,000
Rd 265 247,400 16,000 266,600 249,000
Rd 280 262,400 16,000 281,600 264,000
Rd 300 282,400 16,000 301,600 284,000
Knuckle Thread DIN 20400

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