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System of Measurement
System of Measurement
Inch
Metric
ID
ID
1/16"
0.1"
0.12"
1/8"
0.14"
5/32"
0.16"
0.18"
3/16"
1/5"
7/32"
0.24"
1/4"
0.28"
9/32"
0.31"
5/16"
0.35"
3/8"
7/16"
0.44"
1/2"
9/16"
0.62"
5/8"
0.63"
11/16"
3/4"
25/32"
13/16"
0.82"
0.83"
7/8"
15/16"
1"
1.05"
1 1/16"
1 1/8"
1 3/16"
1 1/4"
1 5/16"
1 3/8"
1.38"
1 7/16"
1 1/2"
1 9/16"
1.61"
1 5/8"
1 11/16"
1 3/4"
1 13/16"
1 13/16" to 2"
1 7/8"
1 15/16"
2"
2 1/16"
2.07"
2 1/8"
2 3/16"
2 1/4"
2 1/4" to 2 5/8"
2 5/16"
2 3/8"
2 7/16"
2.47"
2 1/2"
2 5/8"
2 11/16"
2.71"
2 3/4"
2 13/16"
2 7/8"
2 15/16"
3"
3.07"
3 1/8"
3 1/4"
3 5/16" to 3 3/4"
3.33"
3 3/8"
3 7/16"
3 1/2"
3 9/16"
3 5/8"
3 11/16"
3 3/4"
3 13/16" to 4 3/8"
3 7/8"
3 15/16"
4"
4.03"
4 1/16"
4 1/8"
4 3/16"
4.33"
4 7/16"
4 1/2"
4 1/2" to 4 3/4"
4 9/16"
4 5/8"
4 11/16"
5"
5 1/8"
5 3/16"
5 9/16"
5 5/8"
5 11/16"
6"
6 1/8"
6 1/8" to 6 7/16"
6 3/16"
6 5/8"
6 5/8" to 6 7/8"
6 3/4"
7 5/8"
8"
8 1/4" to 8 9/16"
8 5/8"
8 5/8" to 9"
8 3/4"
9 3/16" to 9 1/2"
10"
10 1/4" to 10 5/8"
10 3/4"
10 3/4" to 11 1/16"
10 7/8"
11 3/8" to 11 7/8"
12"
12 5/16" to 12 11/16"
12 3/4"
12 3/4" to 13 3/16"
12 7/8"
13" to 13 1/4"
14" to 14 1/4"
14 1/8"
14 1/4" to 14 3/4"
15 1/8" to 15 1/2"
15 1/2" to 16 1/4"
16 1/8"
17 1/4" to 17 5/8"
17 13/16" to 18 1/4"
18 1/8"
18 9/16" to 18 7/8"
19 3/8" to 19 11/16"
19 13/16" to 21 11/16"
20 1/8"
21 7/8" to 22 5/16"
23 1/2" to 24 1/2"
24 1/8"
24 1/2" to 25"
25" to 26 1/2"
27 3/4" to 28 1/2"
29 3/4" to 30 5/16"
31 3/4" to 32 5/16"
35" to 37"
2 mm
3 mm
5 mm
6 mm
8 mm
9 mm
10 mm
11 mm
12 mm
13 mm
14 mm
15 mm
16 mm
17 mm
19 mm
21 mm
22 mm
24 mm
25 mm
27 mm
28 mm
29 mm
30 mm
31 mm
32 mm
33 mm
34 mm
35 mm
37 mm
38 mm
40 mm
41 mm
42 mm
43 mm
44 mm
46 mm
46 to 51 mm
48 mm
49 mm
51 mm
52 mm
54 mm
55 mm
56 mm
57 mm
57 to 67 mm
58 mm
59 mm
60 mm
61 mm
62 mm
64 mm
67 mm
68 mm
70 mm
71 mm
73 mm
75 mm
76 mm
79 mm
83 mm
84 to 95 mm
86 mm
87 mm
89 mm
90 mm
92 mm
94 mm
95 mm
97 to 111 mm
98 mm
100 mm
102 mm
103 mm
105 mm
106 mm
112 mm
114 mm
114 to 121 mm
116 mm
117 mm
119 mm
127 mm
130 mm
132 mm
141 mm
143 mm
144mm
152 mm
156 mm
156 to 164 mm
157 mm
168 mm
168 to 175 mm
171 mm
193 mm
203 mm
210 to 217 mm
219 mm
219 to 229 mm
222 mm
233 to 241 mm
254 mm
260 to 270 mm
273 mm
273 to 281 mm
276 mm
289 to 302 mm
305 mm
313 to 322 mm
324 mm
324 to 335 mm
327 mm
330 to 337 mm
356 to 362 mm
359 mm
362 to 375 mm
384 to 394 mm
394 to 413 mm
410 mm
438 to 448 mm
452 to 464 mm
460 mm
471 to 479 mm
492 to 500 mm
503 to 551 mm
511 mm
556 to 567 mm
597 to 622 mm
613 mm
622 to 635 mm
635 to 673 mm
705 to 724 mm
756 to 770 mm
806 to 821 mm
889 to 940 mm
Nut Material
Nut Material
Steel
Stainless Steel
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Cushion Color
Cushion Color
Black
Blue
White
Purple
Red
Yellow
Specifications Met
Specifications Met
ASTM E2180
CE Marked
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CSA
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FDA Compliant
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Fed. Spec.
FM
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IP
Mil. Spec.
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MSS
NSF/ANSI
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OSHA
SAE AS23190/3
UL
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For Rigid Conduit Trade Size
For Rigid Conduit Trade Size
1/4 
3/8 
1/2 
3/4 
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
4 1/2
5
6
7
8
10
12
14
16
18
For Use Outdoors
For Use Outdoors
Yes
No