Standard Metric Flat Washers Sizes
Washers of standard metric sizes are listed in the table below. Measurements in the table refer to the dimensions of the washers as described by the drawing.
| Nominal screw sizes M (mm) |
Screw pitch thread P (mm) |
Internal (Inside) diameter hole d1 (mm) |
External (Outside) diameter d2 (mm) |
thickness H (mm) |
||
|---|---|---|---|---|---|---|
| 1st choice |
2nd choice |
coarse | fine | |||
| 1 | 0.25 | 1.1 | 3 | 0.3 | ||
| 1.2 | 0.25 | 1.3 | 3.5 | 0.3 | ||
| 1.4 | 0.3 | 1.5 | 4 | 0.3 | ||
| 1.6 | 0.35 | 1.7 | 4 | 0.3 | ||
| 1.7 | 1.8 | 4.5 | 0.3 | |||
| 1.8 | 0.35 | |||||
| 2 | 0.4 | 2.2 | 5 | 0.3 | ||
| 2.5 | 0.45 | 2.7 | 6 | 0.5 | ||
| 2.6 | 2.8 | 7 | 0.5 | |||
| 3 | 0.5 | 3.2 | 7 | 0.5 | ||
| 3.5 | 0.6 | 3.7 | 8 | 0.5 | ||
| 4 | 0.7 | 4.3 | 9 | 0.8 | ||
| 5 | 0.8 | 5.3 | 10 | 1 | ||
| 6 | 1 | 0.75 | 6.4 | 12 | 1.6 | |
| 7 | 1 | 7.4 | 14 | 1.6 | ||
| 8 | 1.25 | 1 | 8.4 | 16 | 1.6 | |
| 10 | 1.5 | 1.25 or 1 | 10.5 | 20 | 2 | |
| 12 | 1.75 | 1.5 or 1.25 | 13 | 24 | 2.5 | |
| 14 | 2 | 1.5 | 15 | 28 | 2.5 | |
| 16 | 2 | 1.5 | 17 | 30 | 3 | |
| 18 | 2.5 | 2 or 1.5 | 19 | 34 | 3 | |
| 20 | 2.5 | 2 or 1.5 | 21 | 37 | 3 | |
| 22 | 2.5 | 2 or 1.5 | 23 | 39 | 3 | |
| 24 | 3 | 2 | 25 | 44 | 4 | |
| 27 | 3 | 2 | 28 | 50 | 4 | |
| 30 | 3.5 | 2 | 31 | 56 | 4 | |
| 33 | 3.5 | 2 | 34 | 60 | 5 | |
| 36 | 4 | 3 | 37 | 66 | 5 | |
| 39 | 4 | 3 | 40 | 72 | 6 | |
| 42 | 4.5 | 3 | 43 | 78 | 7 | |
| 45 | 4.5 | 3 | 46 | 85 | 7 | |
| 48 | 5 | 3 | 50 | 92 | 8 | |
| 52 | 5 | 4 | 54 | 98 | 8 | |
| 56 | 5.5 | 4 | 58 | 105 | 9 | |
| 60 | 5.5 | 4 | 62 | 110 | 9 | |
| 64 | 6 | 4 | 66 | 115 | 9 | |
| 68 | 70 | 120 | 10 | |||
| 72 | 74 | 125 | 10 | |||
| 76 | 78 | 135 | 10 | |||
| 80 | 82 | 140 | 12 | |||
| 85 | 87 | 145 | 12 | |||
| 90 | 93 | 160 | 12 | |||
| 100 | 104 | 175 | 14 | |||
Read more about this topic: Washer (hardware)
Famous quotes containing the words standard and/or flat:
“As in political revolutions, so in paradigm choice—there is no standard higher than the assent of the relevant community. To discover how scientific revolutions are effected, we shall therefore have to examine not only the impact of nature and of logic, but also the techniques of persuasive argumentation effective within the quite special groups that constitute the community of scientists.”
—Thomas S. Kuhn (b. 1922)
“Castaway, your time is a flat sea that doesn’t stop,
with no new land to make for and no new stories to swap.”
—Anne Sexton (1928–1974)