Specifications of International Thread Standards

Knuckle Thread DIN 20400

This thread is used in the mining industry; with increased bearing depth.
Bolt Thread
Minor Diameter
mm
Bolt Tapping
Drill Size
mm
Pitch 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
BORNEMANN Gewindetechnik