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:
“I find it interesting that the meanest life, the poorest existence, is attributed to God’s will, but as human beings become more affluent, as their living standard and style begin to ascend the material scale, God descends the scale of responsibility at a commensurate speed.”
—Maya Angelou (b. 1928)
“A man can go from being a lover to being a stranger in three moves flat ... but a woman under the guise of friendship will engage in acts of duplicity which come to light very much later. There are different species of self-justification.”
—Anita Brookner (b. 1938)