Inch sized fasteners and more

Standard lengths

The conversion from inches to other units of measurement, such as decimal and millimeter values, is important in fastening technology and mechanical engineering. The following table shows a selection of common standard lengths in the inch range, along with their corresponding decimal and millimeter values. This reference is especially useful when working with different units of measurement or when an exact conversion is needed. Use this table to quickly get an overview of common standard lengths and plan your projects accordingly.

Inch

Decimal

Millimeter

3/16

0,1875

4,7625

1/4

0,2500

6,3500

5/16

0,3125

7,9375

3/8

0,3750

9,5250

7/16

0,4375

11,1125

1/2

0,5000

12,7000

5/8

0,6250

15,8750

3/4

0,7500

19,0500

7/8

0,8750

22,2250

1

1,0000

25,4000

1.1/4

1,2500

31,7500

1.1/2

1,5000

38,1000

1.3/4

1,7500

44,4500

2

2,0000

50,8000

2.1/4

2,2500

57,1500

2.1/2

2,5000

63,5000

2.3/4

2,7500

69,8500

3

3,0000

76,2000

3.1/4

3,2500

82,5500

3.1/2

3,5000

88,9000

3.3/4

3,7500

95,2500

4

4,0000

101,6000

4.1/2

4,5000

114,3000

5

5,0000

127,0000

5.1/2

5,2500

139,7000

6

6,0000

152,4000

6.1/2

6,5000

165,1000

7

7,0000

177,8000

7.1/2

7,5000

190,5000

8

8,0000

203,2000

8.1/2

8,5000

215,9000

9

9,0000

228,6000

9.1/2

9,5000

241,3000

10

10,0000

254,0000

10.1/2

10,5000

266,7000

11

11,0000

279,4000

11.1/2

11,5000

292,1000

12

12,0000

304,8000

12.1/2

12,5000

317,5000

13

13,0000

330,2000

13.1/2

13,5000

342,9000

14

14,0000

355,6000

14.1/2

14,5000

368,3000

15

15,0000

381,0000