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Style NTU Nylon Insert Locknut

ASME B 18.16.6 (NTU) - 2017

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Nominal Diameter
d

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

d	Nominal Diameter
PP	UNC
PP	UNF
s	max
s	min
e	min
h	max
h	min
m	min

0.250	0.313	0.375	0.438	0.500	0.563	0.625	0.750	0.875	1.000
20	18	16	14	13	12	11	10	9	8
28	24	24	20	20	18	18	16	14	12
0.502	0.564	0.690	0.752	0.877	0.940	1.064	1.252	1.440	1.627
0.492	0.553	0.679	0.741	0.865	0.928	1.052	1.239	1.427	1.614
0.552	0.622	0.766	0.837	0.978	1.051	1.191	1.403	1.615	1.826
0.296	0.328	0.421	0.453	0.546	0.578	0.624	0.718	0.796	0.922
0.266	0.298	0.391	0.423	0.516	0.548	0.594	0.688	0.766	0.860
0.194	0.212	0.251	0.316	0.360	0.421	0.428	0.488	0.535	0.600

Nominal Diameter
d

1-1/8

1-1/4

1-3/8

1-1/2

1-3/4

2-1/4

2-1/2

2-3/4

d	Nominal Diameter
PP	UNC
PP	UNF
s	max
s	min
e	min
h	max
h	min
m	min

1.125	1.250	1.375	1.500	1.750	2.000	2.250	2.500	2.750	3.000
7	7	6	6	5	4.5	4.5	4	4	4
12	12	12	12	-	-	-	-	-	-
1.814	2.008	2.197	2.384	2.762	3.137	3.514	4.015	4.015	4.640
1.801	1.973	2.159	2.344	2.715	3.086	3.457	3.875	3.875	4.500
2.038	2.232	2.444	2.622	3.075	3.497	3.918	4.393	4.393	5.102
1.000	1.140	1.219	1.344	1.532	1.735	2.001	2.250	2.250	2.788
0.938	1.078	1.157	1.282	1.406	1.609	1.875	2.124	2.124	2.662
0.627	0.720	0.767	0.810	0.986	1.016	1.179	1.523	1.523	2.075

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