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DIN 653:2006 Low Profile Knurled Thumb Screw

DIN 653:2006 Low Profile Knurled Thumb Screw uses a low head and a knurled outer edge, allowing manual operation while reducing head protrusion. It is suitable for compact assemblies or visible areas where appearance matters.

The knurled texture improves finger grip and enables quick adjustment without tools. The low profile reduces the risk of snagging or interference, making it useful for panels, instruments, fixtures, and adjustable parts that require frequent operation without excessive head height.

This product can be used in precision equipment, inspection instruments, electronic enclosures, fixtures, and adjustment mechanisms. Stainless steel, plated carbon steel, or other material options can be selected to balance grip feel, corrosion resistance, and consistent appearance.

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 Dimensions unit: inch 

Thread size d

M1

M1.2

M1.4

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

P

Pitch

0.25

0.25

0.3

0.35

0.4

0.45

0.5

0.7

0.8

1

1.25

1.5

a

Max.

0.75

0.75

0.9

1.05

1.2

1.35

1.5

2.1

2.4

3

3.75

4.5

c

-

-

-

-

-

0.3

0.3

0.4

0.4

0.5

0.6

0.8

dk

Nominal

5.5

6

7

7.5

9

11

12

16

20

24

30

36

Max.

5.74

6.24

7.29

7.79

9.29

11.35

12.35

16.35

20.42

24.42

30.42

36.5

Min.

5.26

5.76

6.71

7.29

8.71

10.65

11.65

15.65

19.58

23.58

29.58

35.5

ds

Max.=Nominal

-

-

-

-

2

2.5

3

4

5

6

8

10

Min.

-

-

-

-

1.86

2.36

2.86

3.82

4.82

5.82

7.78

9.78

e

-

-

-

-

1.5

2

2

3

3

4

5

6

k

Max.

1.5

1.5

2

2

2

2.5

2.5

3.5

4

5

6

8

Min.

1.25

1.25

1.75

1.75

1.75

2.25

2.25

3.2

3.7

4.7

5.7

7.64

r

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

1

1

2

2

L ①

Reference value

-

-

-

-

8

10

12

18

18

20

25

30

Knurled pitch

0.5

0.5

0.5

0.5

0.5

0.6

0.6

0.6

0.6

0.6

0.6

0.8

Model

-

-

-

-

-

-

-

-

-

-

-

-

Thousand pieces of steel weigh ≈kg

-

-

-

-

-

-

-

-

-

-

-

-

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