Transmit the driver's force to the screw, with the right profile for each head.

A2 stainless steel TCB self-tapping screw Unifix
Key features
- Head diameter5,6, 6,9, 7,5, 8,2, 9,5, 10,8
- DrivePH1, PH2, PH3
- L thread5,4, 8,4, 11,9, 14,9, 17,9, 20,9, 23,9, 5,2, 8,2, 11,7, 14,7, 17,7, 20,7, 23,7, 30,7, 36,7, 8,1, 11…
- Screw diameter x length2,9x6,5, 2,9x9,5, 2,9x13, 2,9x16, 2,9x19, 2,9x22, 2,9x25, 3,5x6,5, 3,5x9,5, 3,5x13, 3,5x16, 3,5x19…
What it is
A2 stainless steel TCB self-tapping screw Unifix. Key specifications: head diameter 5,6, 6,9, 7,5, 8,2, 9,5, 10,8, drive PH1, PH2, PH3.
Metal screws are self-drilling screws, roofing and cladding screws and cheese-head screws for fixing steel sheet, profiles and roofing.
What it is for
Used for assembling steel structures and for mechanical fixing of structures and components to walls, ceilings and floors.
How to use it
Choose the screw according to the total thickness to be drilled and the type of sheet. Drive self-drilling screws with the screwdriver square to the surface at a suitable speed, without forcing, until the sealing washer is slightly compressed. Screw metric screws into tapped holes or secure them with a nut.
Where it is used
- Industrial construction
- Mechanical engineering industry
- Building maintenance
Technical data
- Head diameter: 5,6, 6,9, 7,5, 8,2, 9,5, 10,8
- Drive: PH1, PH2, PH3
Who it is for
Designed for metal fabricators, industrial maintenance technicians and mechanics.
Related products
- A2 stainless steel TPS self-tapping screw Unifix
- Roofing screw with vulcanised washer, copper-finish A2 stainless steel Unifix
- Socket holder with C connection 6.3-1/4"-1/2" BT-7030 Unifix — from the category Impact Sockets
- Cordless multi-head drill driver XR 12V DeWalt DCD703L2T-QW — from the category Drill Drivers
- Knob with threaded insert, blind hole, Unifix — from the category Hex Nuts
- Browse the whole category: Metal Screws
Before you order
In your request, please state the diameter and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 4
| Head diameter | 5,6, 6,9, 7,5, 8,2, 9,5, 10,8 |
|---|---|
| Drive | PH1, PH2, PH3 |
| L thread | 5,4, 8,4, 11,9, 14,9, 17,9, 20,9, 23,9, 5,2, 8,2, 11,7, 14,7, 17,7, 20,7, 23,7, 30,7, 36,7, 8,1, 11… |
| Screw diameter x length | 2,9x6,5, 2,9x9,5, 2,9x13, 2,9x16, 2,9x19, 2,9x22, 2,9x25, 3,5x6,5, 3,5x9,5, 3,5x13, 3,5x16, 3,5x19… |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Drill and drive screws cordless, with an adjustable clutch to avoid stripping the screws.
Make precise holes in steel, non-ferrous metals and plastics for screws, rivets and threads.
Spread the load under nuts and screws and stop the fixing coming loose.




