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DIN 981 (HM):2009 HM Type Lock Locknut Nut

DIN 981 (HM):2009 HM Type Bearing Lock Nut is used for axial positioning and locking of bearings, sleeves, and shaft assemblies. It is commonly used with MS-type locking washers or similar components to help maintain bearing position and control axial clearance.

Applications include machine-tool spindles, gearboxes, pumps, transmission systems, and precision rotating components. Compared with ordinary nuts, bearing lock nuts place greater emphasis on thread accuracy, end-face contact, and coordinated use with locking washers.

Suitable models and surface finishes can be selected according to shaft diameter, thread size, and operating environment to support long-term stable operation of rotating equipment.

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Dimensions unit: mm

Thread size

Tr220

Tr240

Tr260

Tr280

Tr300

Tr300

Tr320

Tr320

Tr340

Tr340

Tr360

Tr360

Tr380

Tr380

d

×260

×290

×310

×330

×360

×380

×380

×400

×400

×440

×420

×460

×450

×490

P

Pitch

4

4

4

4

4

4

5

5

5

5

5

5

5

5

d2

h13

Nominal

260

290

310

330

360

380

380

400

400

440

420

460

450

490

d1

h13

Nominal

242

270

290

310

336

340

356

360

376

400

394

420

422

440

B

h13

Nominal

30

34

34

38

42

40

42

42

45

55

45

58

48

60

b

JS14

Nominal

20

20

20

24

24

24

24

24

24

28

28

28

28

32

t

H17

Nominal

9

10

10

10

12

12

12

12

12

15

13

15

14

18

Code name

HM 3044

HM 3048

HM 3052

HM 3056

HM 3060

HM 3160

HM 3064

HM 3164

HM 3068

HM 3168

HM 3072

HM 3172

HM 3076

HM 3176

  

Thread size

Tr400

Tr400

Tr420

Tr420

Tr440

Tr440

Tr460

Tr460

Tr480

Tr480

Tr500

Tr500

Tr530

Tr530

d

×470

×520

×490

×540

×520

×560

×540

×580

×560

×620

×580

×630

×630

×670

P

Pitch

5

5

5

5

5

5

5

5

5

5

5

5

6

6

d2

h13

Nominal

470

520

490

540

520

560

540

580

560

620

580

630

630

670

d1

h13

Nominal

442

460

462

490

490

510

510

540

530

560

550

580

590

610

B

h13

Nominal

52

62

52

70

60

70

60

75

60

75

68

80

68

80

b

JS14

Nominal

28

32

32

32

32

36

32

36

36

36

36

40

40

40

t

H17

Nominal

14

18

14

18

15

20

15

20

15

20

15

23

20

23

Code name

HM 3080

HM 3180

HM 3084

HM 3184

HM 3088

HM 3188

HM 3092

HM 3192

HM 3096

HM 3196

HM 30/500

HM 31/500

HM 30/530

HM 31/530

  

Thread size

Tr560

Tr560

Tr600

Tr600

Tr630

Tr630

Tr670

Tr670

Tr710

Tr710

Tr750

Tr750

Tr800

Tr800

d

×650

×710

×700

×750

×730

×0800

×0780

×0850

×0830

×0900

×0870

×0950

×0920

×1000

P

Pitch

6

6

6

6

6

6

6

6

7

7

7

7

7

7

d2

h13

Nominal

650

710

700

750

730

800

780

850

830

900

870

950

920

1000

d1

h13

Nominal

610

650

660

690

690

730

740

775

780

825

820

875

870

925

B

h13

Nominal

75

85

75

85

75

95

80

106

90

106

90

112

90

112

b

JS14

Nominal

40

45

40

45

45

50

45

50

50

55

55

60

55

60

t

H17

Nominal

20

25

20

25

20

28

20

28

25

30

25

34

25

34

Code name

HM 30/560

HM 31/560

HM 30/600

HM 31/600

HM 30/630

HM 31/630

HM 30/670

HM 31/670

HM 30/710

HM 31/710

HM 30/750

HM 31/750

HM 30/800

HM 31/800

  

Thread size

Tr850

Tr850

Tr900

Tr900

Tr950

Tr950

Tr1000

Tr1000

Tr1060

Tr1060

Tr1120

d

×0980

×1060

×1030

×1120

×1080

×1170

×1140

×1240

×1200

×1300

×1260

P

Pitch

7

7

7

7

8

8

8

8

8

8

8

d2

h13

Nominal

980

1060

1030

1120

1080

1170

1140

1240

1200

1300

1260

d1

h13

Nominal

925

975

975

1030

1025

1080

1085

1140

1145

1210

1205

B

h13

Nominal

90

118

100

125

100

125

100

125

100

125

100

b

JS14

Nominal

60

70

60

70

60

70

60

70

60

70

60

t

H17

Nominal

25

38

25

38

25

38

28

38

25

38

25

Code name

HM 30/850

HM 31/850

HM 30/900

HM 31/900

HM 30/950

HM 31/950

HM 30/1000

HM 31/1000

HM 30/1060

HM 31/1060

HM 30/1120

① Material: steel with minimum tensile strength of 350 MPa, manufacturer chooses manufacturing method

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