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Iso 965

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Iso 965

ISO 965 (ISO general purpose metric screw thread—tolerances) is an standard for metric screw thread tolerances.[1] It specifies the basic profile for ISO general purpose metric screw threads (M) conforming to ISO 261.[2]

The tolerance system refers to the basic profile in accordance with ISO 68-1. The Field of application and purpose of ISO 965 can be defined as "ISO 965 specifies a tolerance system for screw threads from 1mm diameter upwards.[3]

Thread tolerances

Limits for Metric (standard) Coarse Threads According To ISO 965.[4]
Thread size Engagement
length
Major
diameter(d)
Pitch
diameter(d2)
in mm from to max. min. max. min.
M1 0,6 1,7 1,000 0,933 0,838 0,785
M1.2 0,6 1,7 1,100 1,033 0,938 0,885
M1.4 0,7 2 1,400 1,325 1,205 1,149
M1.6 0,8 2,6 1,581 1,496 1,354 1,291
M1.8 0,8 2,6 1,781 1,696 1,554 1,491
M2 1 3 1,981 1,886 1,721 1,654
M2.2 1,3 3,8 2,180 2,080 1,888 1,817
M2.5 1,3 3,8 2,480 2,380 2,118 2,117
M3 1,5 4,5 2,980 2,874 2,655 2,580
M3.5 1,7 5 3,479 3,354 3,089 3,004
M4 2 6 3,978 3,838 3,523 3,433
M5 2,5 7,5 4,976 4,826 4,456 4,361
M6 3 12 5,974 5,794 5,324 5,212
M7 3 3 6,974 6,794 6,324 6,212
M8 4 12 7,972 7,760 7,160 7,042
M10 5 15 9,968 9,732 8,994 8,862
M12 6 18 11,966 11,701 10,829 10,679
M14 8 24 13,962 13,682 12,663 12,503
M16 8 24 15,962 15,682 14,663 14,503
M18 10 30 17,958 17,623 16,334 16,164
M20 10 30 19,958 19,623 18,334 18,164
M22 10 30 21,958 21,623 20,334 20,164
M24 12 36 23,952 23,577 22,003 21,803
M27 12 36 26,952 26,577 25,003 24,803
M30 15 45 29,947 29,522 27,674 27,462
M33 15 45 32,947 32,522 30,674 30,462
M36 18 53 35,940 35,465 33,342 33,118
M39 18 53 38,940 38,465 36,342 36,118
  • Limits For Metric Fine Threads According To ISO 965
Thread Size Engagement
length
Major diameter Pitch diameter
in mm from to max. min. max. min.
M8x1 3 9 7,974 7,794 7,324 7,212
M10x1.25 4 12 9,972 9,760 9,160 9,042
M12x1.25 4,5 13 11,972 11,760 11,160 11,028
M14x1.5 5,6 16 13,968 13,732 12,994 12,854
M16x1.5 5,6 16 15,968 15,732 14,994 14,854
M18x1.5 5,6 16 17,968 17,732 16,994 16,854
M20x1.5 5,6 16 19,968 19,732 18,994 18,854
M22x1.5 5,6 16 21,968 21,732 20,994 20,854
M24x2 8,5 25 23,962 23,682 22,663 22,493
M27x2 8,5 25 26,962 26,682 25,663 25,493
M30x2 8,5 25 29,962 29,682 28,663 28,493
M33x2 8,5 25 32,962 32,682 31,663 31,493
M36x3 12 36 35,952 35,577 34,003 33,803
M39x3 12 36 38,952 38,577 37,003 36,803

References

  1. ^ ISO 965 in the Catalogue on the Official ISO website
  2. ^ Malaysian Standard, Sectorial Catalogue, Mechanical Systems & Components-Source-Government of Malaysia
  3. ^ [1] ISO 965 Application as described in the Book "Transactions of Technical Conference on Metric Mechanical Fasteners, Part 3"-Source-Google Books-Published by American National Standards Institute Inc, New york
  4. ^ [2] Limits for Metric (standard) Coarse Threads according to ISO 965
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