Self Drilling Countersunk Head T20 4.2X25 Notched And Wings Zinc Plated
- 1 unit
- 10 units
- 100 units
- 1000 Units
- 4000 units
screws
nuts
washers
Threaded Rod
Boxes / Tools
Chandlery
| Number of pieces | 1 | 10 | 30 | 150 | 600 |
| Lot price VAT included | €1.85 | €3.70 | €4.50 | €11.55 | €39.90 |
How do I measure the length of a screw?
The length of a countersunk screw is measured with the head. For all other heads, the length is measured under the head.
All our zinc-plated parts meet this specification (unless otherwise stated).
🛡️ Corrosion protection: low
Thin 3 to 5 µm zinc coating, suitable for environments with low exposure.
🧂 Salt spray resistance: 24 to 96 h
Indicative resistance before the appearance of rust, depending on the coating finish.
🏠 Recommended environment
Indoor applications or environments with very low exposure to moisture.
🔩 Threads preserved
The low coating thickness limits dimensional variations and helps maintain thread accuracy.
| Jauge number | 12 | 14 |
| Diameter | 5.5 | 6.3 |
| Head diameter | 10.8 | 12.4 |
| Head Tickness | 3.4 | 3.8 |
| Tx | 30 | 30 |
Use for fixing 22mm osb3 floor board to IPE joists Use for fixing 22mm osb3 floor board to IPE joists
roof sheathing on IPN 27 mm roof sheathing on IPN for roof repair
Construction of a wooden terrace on a metal frame Construction of a Douglas 27x145 wooden terrace on a 80x40 zinc-plated metal frame
Creation of a wooden barrier 15 ml long barrier in class 4 wood on metal supports
fixing a wooden board on a metal frame agricultural shed
the screws will be used to redo the floor of a trailer it is a Breton trailer of 5 x 2.5m
fixing 145 mmX45mm framing wood on 50X50 galvanized steel tube Douglas fir wood
Fixing formwork boards on a plank without splitting the wood The formwork board measures 27 mm thick and the plank 70 mm; the smooth part of the screw corresponds to the thickness of the board and therefore allows good tightening
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2026-08-23
Fixing the boards Fixing 30mm thick boards against a U-shaped iron beam