Product Description:
DIN968 Self Tapping Screw Standard
DIN968 is a standard for cross groove pan head self tapping screws
developed by the German Institute for Standardization (DIN). These
screws are commonly used for fastening connections between metal
sheets and non-metallic materials.
The groove type of DIN968 standard self tapping screws is either
H-type or Z-type, with the tail being a pointed tail (C-type) or a
flat tail (F-type). This design is particularly suitable for self
tapping into hard materials.The head of the screw is structured as
a Pan Head with gaskets, and the diameter specifications range from
ST2.9 to ST6.3.
Features:
DIN968 Self Tapping Screws
Self tapping screws from DIN968 are commonly manufactured using
carbon steel (with surface galvanized or nickel-plated) and
stainless steel (specifically SUS304 for corrosion resistance). The
carbon steel variant with a grade of 8.8 possesses a tensile
strength of at least 400 MPa, while the stainless steel version of
grade A2-70 requires a strength rating of at least 700 MPa.
These screws adhere to international equivalent standards that
align with the technical specifications outlined in ISO 7049,
ensuring uniformity and consistency in their quality and
performance.
Technical Parameters:
Thread Size
d | ST2.9 | ST3.5 | ST4.2 | ST4.8 | (ST5.5) | ST6.3 |
| P | Pitch | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 |
| a | max | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 |
| dk | max=nominal size | 7.5 | 9 | 10 | 11.5 | 13 | 14.5 |
| min | 6.92 | 8.42 | 9.42 | 10.8 | 12.3 | 13.8 |
| k | max=nominal size | 2.35 | 2.6 | 3.05 | 3.55 | 3.8 | 4.55 |
| min | 2.1 | 2.35 | 2.75 | 3.25 | 3.5 | 4.25 |
| c | max | 0.8 | 0.9 | 1.1 | 1.35 | 1.6 | 1.8 |
| min | 0.6 | 0.7 | 0.9 | 1.05 | 1.2 | 1.4 |
| r | min | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.25 |
| R | ≈ | 3.8 | 4.6 | 5.8 | 6.6 | 7.8 | 8.2 |
| Socket No. | 1 | 2 | 2 | 2 | 3 | 3 |
| M1 | From H | Ref. | 3 | 4.2 | 4.6 | 5 | 6.5 | 7.1 |
| Penetration depth | From H | min | 1.35 | 1.4 | 1.8 | 2.26 | 2.49 | 3 |
| max | 1.8 | 2.03 | 2.46 | 2.87 | 3.15 | 3.66 |
| M2 | From Z | Ref. | 2.9 | 3.9 | 4.3 | 4.7 | 6.2 | 6.7 |
| Penetration depth | From Z | min | 1.58 | 1.47 | 1.88 | 2.28 | 2.51 | 3.02 |
| max | 1.83 | 1.93 | 2.34 | 2.74 | 2.97 | 3.48 |
| y | Ref. | Type C | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 |
| Type F | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 |
| Type R | / | 2.7 | 3.2 | 3.6 | 4.3 | 5 |
Company Certificate:
Packaging:
 |  |  |
| Carton Packaging | Outer Cartonbox Packaging | Pallet Packaging |
| Bolts are packed in neutral packaging boxes, with standard
quantities arranged in small cartons. The exact number of units per
carton will be confirmed with the customer to align with their
specific requirements. Customized packaging configurations are
available upon request. | The small cartons are then consolidated into larger master cartons
for secure transportation and storage. The quantity per master
carton can be customized based on client specifications or aligned
with standard logistical requirements. | The palletized units are securely wrapped with waterproof film and
reinforced with packaging straps. Customer-specific shipping marks
or labels are affixed to each pallet, ensuring clear identification
and compliance with logistics requirements. This final packaging
stage guarantees weather-resistant protection and stability during
transportation. |
