めねじ下穴径
ウィット並目ねじ Whit coarse screw threads
単位:mm
ねじの呼び | 下穴径最小 (ひっかかり率) |
ねじ下ぎりの直径 | |
---|---|---|---|
A列(硬質材) | B列(軟質材) | ||
W 1/8 - 40 | 2.456(88.4%) | 2.65 | 2.60 |
5/32 - 32 | 3.070(〃) | 3.25 | 3.20 |
3/16 - 24 | 3.564(〃) | 3.75 | 3.70 |
1/4 - 20 | 4.914(88.3%) | 5.10 | 5.00 |
5/16 - 18 | 6.340(88.4%) | 6.60 | 6.50 |
3/8 - 16 | 7.733(88.2%) | 8.00 | 7.90 |
7/16 - 14 | 9.048(88.8%) | 9.40 | 9.30 |
1/2 - 12 | 10.310(88.2%) | 10.70 | 10.50 |
9/16 - 12 | 11.898(〃) | 12.30 | 12.00 |
5/8 - 11 | 13.257(88.5%) | 13.70 | 13.50 |
3/4 - 10 | 16.178(88.3%) | 16.70 | 16.50 |
7/8 - 9 | 19.031(88.4%) | 19.50 | 19.30 |
1 - 8 | 21.814(88.2%) | 22.40 | 22.00 |
1 1/8 - 7 | 24.469(88.4%) | 25.00 | 24.80 |
1 1/4 - 7 | 27.644(〃) | 28.30 | 28.00 |
1 3/8 - 6 | 30.123(88.6%) | 30.50 | 30.30 |
1 1/2 - 6 | 33.298(〃) | 33.80 | 33.50 |
1 5/8 - 5 | 35.529(88.3%) | 36.00 | 35.70 |
1 3/4 - 5 | 38.704(〃) | 39.20 | 39.00 |
1 7/8 - 4 1/2 | 41.237(88.4%) | 41.80 | 41.50 |
2 - 4 1/2 | 44.412(〃) | 45.00 | 44.70 |