Color Hole

Item No.: CH

Brand: MIKADO (Made-In-Japan)

Formwork Applicable: Plywood

Use: For heavy equipment

Type: No after-treatment of nails required

Type of fixing: Pre-fastening


  • Troublesome after-treatment of nails no longer required as it is completely removed from the slab
  • A neat finish is realised because a section of the insert exposed underneath the slab is limited
  • Eliminate the need for overhead drilling
  • A single nail allows precise driving of the insert at the marked position
  • Allows installation after placement of reinforcement
  • Fixtures can be reused and installed on the formwork when the marked position is the same
  • Suitable for hanging heavy items like sanitary and air conditioning systems
  • Suitable for armor construction and flying floor construction methods
  • Insured with product liability insurance

Part No.

Thread Size

Effective Embedded Depth (mm)

Embedded in Concrete, Pullout Test Result

Effective Thread Length S (mm)

Diameter of Head D (mm)

Diameter of Core d (mm)

Height H (mm)

Thickness of Head h (mm)

Quantity/Carton (pcs)

Max Pullout Force (kN)

Concrete Compressive Strength (N/mm2)

CH-3040

W3/8

38

22.3

19.0

13

22

12

40

5

500

CH-3050

W3/8

48

25.7

23.5

13

22

12

50

5

400

CH-4060

W1/2

57

38.6

28.0

25

28

17

60

8

250

CH-5070

W5/8

65

45.2

22.3

30

37

22

70

10

100

CH-M1040

M10

42.5

20.8

23.6

13

22

13

45

5

500

CH-M1050

M10

52.5

26.8

23.6

13

22

13

55

5

400

CH-M1260

M12

57

38.6

28.0

25

28

17

60

8

250

CH-M1670

M16

65

45.2

22.3

30

37

22

70

10

100

*Pullout test values are values when the insert breaks

  1. Drive a threaded nail at the marked position using a hammer and attach a locating fixture on the formwork
  2. After placement of reinforcing bars, place the insert onto the locating fixture
  3. When concrete is placed, it will not penetrate into the inside of the insert because it is plugged by the locating fixture
  4. When the formwork is removed, fixtures and nails are also removed because they are attached to the formwork, and after-treatment of nails is not required. The fixtures on the formwork can be easily removed using a crowbar.