International Standards
Organization Metric Screw
Threads

Metric threads within ISO965 to tighter fit tolerance than recommended by most foreign standards organizations.



Recommended Shaft/Spindle Thread Dimensions

Major Dia Pitch Dia Minor Dia
Thread Size Pitch Max Min Max Min Max
10 x ,75 ,75 10,000 9,860 9,513 9,433 9,080
12 x 1 1 12,000 11,820 11,350 11,255 10,773
15 x 1 1 15,000 14,820 14,350 14,255 13,773
17 x 1 1 17,000 16,820 16,350 16,255 15,773
20 x 1 1 20,000 19,820 19,350 19,255 18,773
22 x 1 1 22,000 21,820 21,350 21,255 20,773
25 x 1,5 1,5 25,000 24,764 24,026 23,908 23,159
28 x 1,5 1,5 28,000 27,764 27,026 26,908 26,159
30 x 1,5 1,5 30,000 29,764 29,026 28,908 28,159
32 x 1,5 1,5 32,000 31,764 31,026 30,908 30,159
35 x 1,5 1,5 35,000 34,764 34,026 33,908 33,159
40 x 1,5 1,5 40,000 39,764 39,026 38,908 38,159
45 x 1,5 1,5 45,000 44,764 44,026 43,908 43,159
50 x 1,5 1,5 50,000 49,764 49,026 48,901 48,159
55 x 2 2 55,000 54,720 53,701 53,561 52,546
60 x 2 2 60,000 59,720 58,701 58,561 57,546
65 x 2 2 65,000 64,720 63,701 63,561 62,546
70 x 2 2 70,000 69,720 68,701 68,561 67,546
75 x 2 2 75,000 74,720 73,701 73,561 72,546
80 x 2 2 80,000 79,720 78,701 78,561 77,546
85 x 2 2 85,000 84,720 83,701 83,561 82,546
90 x 2 2 90,000 89,720 88,701 88,561 87,546
95 x 2 2 95,000 94,720 93,701 93,551 92,546
100 x 2 2 100,000 99,720 98,701 98,551 97,546
105 x 2 2 105,000 104,720 103,701 103,551 102,546
110 x 2 2 110,000 109,720 108,701 108,551 107,546
115 x 2 2 115,000 114,720 113,701 113,551 112,546
120 x 2 2 120,000 119,720 118,701 118,551 117,546
125 x 2 2 125,000 124,720 123,701 123,551 122,546
130 x 2 2 130,000 129,720 128,701 128,551 127,546
135 x 2 2 135,000 134,720 133,701 133,551 132,546
140 x 2 2 140,000 139,720 138,701 138,551 137,546
145 x 2 2 145,000 144,720 143,701 143,551 142,546
150 x 2 2 150,000 149,720 148,701 148,551 147,546
155 x 3 3 155,000 154,625 153,051 152,871 151,319
160 x 3 3 160,000 159,625 158,051 157,871 156,319
165 x 3 3 165,000 164,625 163,051 162,871 161,319
170 x 3 3 170,000 169,625 168,051 167,871 166,319
180 x 3 3 180,000 179,625 178,051 177,871 176,319
190 x 3 3 190,000 189,625 188,051 187,851 186,319
200 x 3 3 200,000 199,625 198,051 197,851 196,319

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