技術資料 ユニファイ並目ねじの基準寸法
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ユニファイ並目ねじの基準寸法  mm
ねじの呼び ねじ山数
25.4mm
につき
(n)
ピッチ
(P)
(参考)
ひっかかり
の高さ
めねじ
谷の径
(D)
有効径
(D2)
内径
(D1)
1 2 (参考) おねじ
外径
(d)
有効径
(d2)
谷の径
(d1)
No. 2-56 UNC No. 1-64 UNC

No. 3-48 UNC
0.0730-64 UNC
0.0860-56 UNC
0.0990-48 UNC
64
56
48
0.3969
0.4536
0.5292
0.125
0.246
0.286
1.854
2.184
2.515
1.598
1.890
2.172
1.425
1.694
1.941
No. 4-40 UNC
No. 5-40 UNC
No. 6-32 UNC
  0.1120-40 UNC
0.1250-40 UNC
0.1380-32 UNC
40
40
32
0.6350
0.6350
0.7938
0.344
0.344
0.430
2.845
3.175
3.505
2.433
2.764
2.990
2.156
2.487
2.647
No. 8-32 UNC
No. 10-24 UNC
No. 12-24 UNC 0.1649-32 UNC
0.1900-24 UNC
0.2160-24 UNC
32
24
24
0.7938
1.0583
1.0583
0.430
0.573
0.573
4.166
4.826
5.486
3.650
4.138
4.798
3.307
3.680
4.341
  1/4-20 UNC
  5/16-18 UNC
  3/8-16 UNC
  0.2500-20 UNC
0.3125-18 UNC
0.3750-16 UNC
20
18
16
1.2700
1.4111
1.5875
0.687
0.764
0.859
6.350
7.938
9.525
5.524
7.021
8.494
4.976
6.411
7.805
  7/16-14 UNC
  1/2-13 UNC
  9/16-12 UNC
  0.4375-14 UNC
0.5000-13 UNC
0.5625-12 UNC
14
13
12
1.8143
1.9538
2.1167
0.982
1.058
1.146
11.112
12.700
14.288
9.934
11.430
12.913
9.149
10.584
11.996
  5/8-11 UNC
  3/4-10 UNC
  7/8-9 UNC
  0.6250-11 UNC
0.7500-10 UNC
0.8750- 9 UNC
11
10
9
2.3091
2.5400
2.8222
1.250
1.375
1.528
15.875
19.050
22.225
14.376
17.399
20.391
13.376
16.299
19.169
  1 - 8 UNC
  1 1/8-7 UNC
  1 1/4-7 UNC
  1.0000- 8 UNC
1.1250- 7 UNC
1.2500- 7 UNC
8
7
7
3.1750
3.6286
3.6286
1.719
1.964
1.964
25.400
28.575
31.750
23.338
26.218
29.393
21.963
24.648
27.823
  1 3/8-6 UNC
  1 1/2-6 UNC
  1 3/4-5 UNC
  1.3750- 6 UNC
1.5000- 6 UNC
1.7500- 5 UNC
6
6
5
4.2333
4.2333
5.0800
2.291
2.291
2.750
34.925
38.100
44.450
32.174
35.349
41.151
30.343
33.518
38.951
  2 - 4 1/2 UNC
  2 1/4-4 1/2 UNC
  2 1/2-4 UNC
  2.0000-4.5 UNC
2.2500-4.5 UNC
2.5000- 4 UNC
4 1/2
4 1/2
4
5.6444
5.6444
6.3500
3.055
3.055
3.437
50.800
57.150
63.500
47.135
53.485
59.375
44.689
51.039
56.627
  2 3/4-4 UNC
  3 - 4 UNC
  3 1/4-4 UNC
  2.7500- 4 UNC
3.0000- 4 UNC
3.2500- 4 UNC
4
4
4
6.3500
6.3500
6.3500
3.437
3.437
3.437
69.850
76.200
82.550
65.725
72.075
78.425
62.977
69.327
75.677
  3 1/2-4 UNC
  3 3/4-4 UNC
  4 - 4 UNC
  3.5000- 4 UNC
3.7500- 4 UNC
4.0000- 4 UNC
4
4
4
6.3500
6.3500
6.3500
3.437
3.437
3.437
88.900
95.250
101.600
84.775
91.125
97.475
82.027
88.377
94.727

JIS B 0206-1973
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