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Locknut Thread Sizes- UNITED STATES FORM




 

We can supply Taps for all sizes and
Hexagon Bearing Locknut Dies For Locknut #00 thru #30; Sizes .391-32 thru 5.888-12

 

LOCKNUT THREAD SIZES - UNITED STATES FORM

LOCKNUT

NUMBER

NUMBER
THREADS PER INCH

PITCH DIAMETER

HELIX ANGLE

O.D.

MAXIMUM

MINIMUM

MAXIMUM

MINIMUM
N-00

32

.3707

.3681

1 28'

.391

.3856
N-01

32

.4487

.4461

1 16'

.469

.4636
N-02

32

.5657

.5627

0 59'

.586

.5806
N-03

32

.6438

.6407

0 53'

.664

.6586
N-04

32

.7607

.7573

0 44'

.781

.7756
N-05

32

.9487

.9453

0 36'

.969

.9636
N-06

18

1.1369

1.1329

0 52'

1.173

1.1648
N-07

18

1.3399

1.3359

0 45'

1.376

1.3678
N-08

18

1.5269

1.5224

0 39'

1.563

1.5548
N-09

18

1.7309

1.7264

0 35'

1.767

1.7588
N-10

18

1.9309

1.9264

0 31'

1.967

1.9588
N-11

18

2.1209

2.1158

0 28'

2.157

2.1488
N-12

18

2.3239

2.3188

0 26'

2.360

2.3518
N-13

18

2.5119

2.5068

0 24'

2.548

2.5398
N-14

18

2.7149

2.7098

0 22'

2.751

2.7428
*AN-15

12

2.8789

2.8735

0 31'

2.933

2.9218
*AN-16

12

3.0829

3.0770

0 29'

3.137

3.1258
*AN-17

12

3.2859

3.2785

0 27'

3.340

3.3288
*AN-18

12

3.4729

3.4655

0 26'

3.527

3.5158
*AN-19

12

3.6759

3.6685

0 24'

3.730

3.7188
*AN-20

12

3.8639

3.8565

0 23'

3.918

3.9068
*AN-21

12

4.0679

4.0596

0 22'

4.122

4.1108
*AN-22

12

4.2709

4.2626

0 21'

4.325

4.3138
*AN-24

12

4.6619

4.6536

0 19'

4.716

4.7048
*AN-26

12

5.0519

5.0436

0 17'

5.106

5.0948
*AN-28

12

5.4429

5.4346

0 16'

5.497

5.4858
*AN-30

12

5.8339

5.8256

0 15'

5.888

5.8768
*AN-32

8

6.2028

6.1937

0 22'

6.284

6.2688
*AN-34

8

6.5778

6.5687

0 20'

6.659

6.6438
*AN-36

8

6.9848

6.9757

0 19'

7.066

7.0508
*AN-38

8

7.3908

7.3817

0 18'

7.472

7.4568
*AN-40

8

7.7658

7.7544

0 17'

7.847

7.8318


Threads are American (National) Standard Form, Fine Pitch, Equivalent to a Class 3 Fit.

* Prefix "A" before Locknut Number, Indicates that this size was previously manufactured with 11 threads per inch.

 

this table is from H & K Thread Grnding Co.

We can supply Taps for all sizes and
Hexagon Bearing Locknut Dies For Locknut #00 thru #30; Sizes .391-32 thru 5.888-12

 



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Phone: 1-800-465-1384
Fax: 1-800-605-2442

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Phone: 1-800-465-1384
Fax: 1-800-605-2442

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December 2004
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