Hex socket flat head cap screw TKS standard (steel)

Caution
- Since this series uses a countersunk screw type with a head that does not protrude, the L dimension is equal to the overall length.
For the overall length, please refer to the "Length L (mm)" in the specifications and dimension information. - The product images are representative only. Specifications may vary by part number, including shape and color.
Product Description
[Features]
· Compared to the JIS standard, the TKS standard features a deeper hex socket, allowing for more stable fastening and improved loosening prevention.
· Since the head has a countersunk shape, the head of the screw does not protrude after fastening, providing excellent safety. Additionally, it requires less space for installation than conventional hex socket head cap screws.
Product Overview

Drawing
(Unit: mm)
| Nominal | dk | k | S | t | |||||
|---|---|---|---|---|---|---|---|---|---|
| d | Maximum (theoretical dimension) | Minimum (actual dimension) | Maximum | Minimum | Nominal | Maximum | Minimum | Maximum | Minimum |
| M3 | 6.5 | 5.7 | 1.75 | 1.56 | 2 | 2.08 | 2.02 | 1.2 | 0.95 |
| M4 | 8.8 | 7.64 | 2.4 | 2.16 | 2.5 | 2.58 | 2.52 | 1.8 | 1.55 |
| M5 | 10.8 | 9.64 | 2.9 | 2.66 | 3 | 3.08 | 3.02 | 2.3 | 2.05 |
| M6 | 12.8 | 11.57 | 3.5 | 3.12 | 4 | 4.105 | 4.030 | 2.5 | 2.25 |
| M8 | 17.0 | 15.57 | 4.6 | 4.22 | 5 | 5.105 | 5.030 | 3.5 | 3.2 |
| M10 | 21.2 | 19.48 | 5.7 | 5.32 | 6 | 6.105 | 6.030 | 4.4 | 4.1 |
TKS Standard (Tokosha Metal Works Standard)
Do you have the following issues?
- Issue 1
- I want the head of the screw to be hidden after fastening
- Issue 2
- I want to change the material depending on the use
- Solve your issues with hex socket flat head cap screw TKS Standard [1 to 1,000 pcs. included]!
- Solution 1:
- Because the head of the screw is countersunk, the head is not exposed!
- Solution 2:
- Six types of materials are available for different applications!
[Product features]

· Since the head has a hex socket, tightening can be done securely even in places where it is difficult to use a screwdriver.
· Because it can be tightened with a hex wrench, it is often used for large equipment or areas where secure fastening is required, providing excellent safety.
In addition, it requires less space for work compared to conventional hex socket head cap screws.






