ねじ基準寸法 Standard Size Screw
ねじ基準寸法（JIS基準に準ずる） Standard Size Screw （JIS Standard）
メートル並目ねじ基準寸法（2級） Coarse Basic Dimension M （Class 2）
| ねじの呼び Nominal Size | ピッチ Pitch | おねじ外径 Male Screw External | めねじ内径 Female Screw Internal |
||
|---|---|---|---|---|---|
| 最大 Max. | 最小 Min. | 最大 Max. | 最小 Min. | ||
| M2 | 0.4 | 1.980 | 1.890 | 1.679 | 1.567 |
| M2.3 | 0.4 | 2.280 | 2.190 | 1.979 | 1.867 |
| M2.5 | 0.45 | 2.480 | 2.380 | 2.138 | 2.013 |
| M2.6 | 0.45 | 2.580 | 2.480 | 2.238 | 2.113 |
| M3 | 0.5 | 2.980 | 2.874 | 2.599 | 2.459 |
| M3.5 | 0.6 | 3.470 | 3.360 | 3.010 | 2.850 |
| M4 | 0.7 | 3.978 | 3.838 | 3.422 | 3.242 |
| M4.5 | 0.75 | 4.470 | 4.340 | 3.878 | 3.688 |
| M5 | 0.8 | 4.976 | 4.826 | 4.334 | 4.134 |
| M6 | 1.0 | 5.970 | 5.820 | 5.153 | 4.917 |
| M8 | 1.25 | 7.960 | 7.790 | 6.912 | 6.647 |
| M10 | 1.5 | 9.960 | 9.770 | 8.676 | 8.376 |
| M12 | 1.75 | 11.950 | 11.760 | 10.441 | 10.106 |
| M14 | 2.0 | 13.950 | 13.740 | 12.210 | 11.835 |
| M16 | 2.0 | 15.950 | 15.740 | 14.210 | 13.835 |
サラ穴基準寸法（参考） Standard Size Countersink（Reference）
メートルねじ用サラ穴基準寸法（サラ角度90度） Countersink Basic Dimension M（Countersink Angle 90°）
| サラ穴径 Countersink Diameter |
ねじの呼び Screw Symbol |
サラ穴径許容差 Countersink Hole Tolerance |
サラ穴深さ Countersink Hole Depth |
|
|---|---|---|---|---|
| 上限 Max. | 下限 Min. | |||
| Φ4.4 | M2 | +0.4 | -0.1 | 1.2 |
| Φ5.0 | M2.3 | +0.4 | -0.1 | 1.3 |
| Φ5.4 | M2.5 | +0.4 | -0.1 | 1.4 |
| Φ5.6 | M2.6 | +0.4 | -0.1 | 1.5 |
| Φ6.5 | M3 | +0.4 | -0.2 | 1.7 |
| Φ7.5 | M3.5 | +0.4 | -0.2 | 2 |
| Φ8.6 | M4 | +0.4 | -0.2 | 2.2 |
| Φ9.6 | M4.5 | +0.4 | -0.2 | 2.5 |
| Φ10.6 | M5 | +0.5 | -0.2 | 2.7 |
| Φ12.8 | M6 | +0.5 | -0.2 | 3.3 |
| Φ16.8 | M8 | +0.5 | -0.2 | 4.3 |
※サラ穴の深さが板厚を超える場合は、相手側に面取りを行ってください。
Please chamfer the board if the depth of countersink is over board thickness.
Please chamfer the board if the depth of countersink is over board thickness.
リベット用サラ穴基準寸法（サラ角度90度） Countersink Hole Standard Size for Rivet（Countersink Angel 90°）
| サラ穴径 Countersink Hole |
リベットの呼び径 Rivet Symbol |
サラ穴径許容差 Countersink Hole Tolerance |
サラ穴深さ Countersink Hole Depth |
|
|---|---|---|---|---|
| 上限 Max. |
下限 Min. |
|||
| Φ4.0 | 2 | +0.1 | -0.4 | 0.9 |
| Φ4.6 | 2.3 | +0.1 | -0.4 | 1.0 |
| Φ5.2 | 2.6 | +0.1 | -0.4 | 1.1 |
| Φ6.0 | 3 | +0.1 | -0.4 | 1.3 |
| Φ7.0 | 3.5 | +0.2 | -0.4 | 1.6 |
| Φ8.0 | 4 | +0.2 | -0.4 | 1.9 |