CONE-SHAPED CONCEALED HEAD SCREW
KKT A4 | AISI316
KKT A4 | AISI316 is the wood screwdesigned for outdoor use in very aggressive environments.
Ideal for fastening claddings for terraces and façades, it is also available in the KKT X version for fastening standard clips for wooden boards.
KKT A4 | AISI316 wood screws: the ideal fastening for terraces and façades.
The KKT A4 | AISI316 wood screw is ideal in very aggressive environments and for chemically treated woods.
The inverse (left-hand) under-head thread guarantees excellent grip. The small conical head ensures that it is well concealed in the wood.
The three-lobed thread makes it possible to cut the wood grain during screwing, guaranteeing an exceptional wood penetration.
In A4 | AISI316 austenitic stainless steel, it is also available in the KKT X version with reduced length, for fastening Rothoblaas TVM and TERRALOCK standard clips in outdoor environments.
The KKT A4 and KKT X wood screws are suitable for use without pre-drilling on timber boards with a density of less than 550 kg/m3 and with pre-drilling on boards with a density of less than 880 kg/m3. Service classes 1, 2 and 3.
Features
| FOCUS | excellent grip |
|---|---|
| HEAD | conical, countersunk |
| DIAMETER | 5.0 mm |
| LENGTH | from 20 mm to 80 mm |
Documents
Technical data sheets
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Technical data sheets USA
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| Declaration of performance (DOP) | Download |
File CAD
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Calculator Spreadsheet_DeckDesigner
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KKT A4 | AISI316
| CODE | info | d₁
[mm]
|
L
[mm]
|
b
[mm]
|
d₁
[in]
|
L
[in]
|
b
[in]
|
TX | pcs. |
|---|---|---|---|---|---|---|---|---|---|
| KKT540A4 | - | 5 | 43 | 25 | 0.2 | 1 11/16'' | 1'' | TX20 | 200 |
| KKT550A4 | - | 5 | 53 | 35 | 0.2 | 2 1/16'' | 1 3/8'' | TX20 | 200 |
| KKT560A4 | - | 5 | 60 | 40 | 0.2 | 2 3/8'' | 1 9/16'' | TX20 | 200 |
| KKT570A4 | - | 5 | 70 | 50 | 0.2 | 2 3/4'' | 1 15/16'' | TX20 | 100 |
| KKT580A4 | - | 5 | 80 | 53 | 0.2 | 3 1/8'' | 2 1/16'' | TX20 | 100 |
KKT X A4 | AISI316
| CODE | info | d₁
[mm]
|
L
[mm]
|
b
[mm]
|
d₁
[in]
|
L
[in]
|
b
[in]
|
TX | pcs. |
|---|---|---|---|---|---|---|---|---|---|
| KKTX520A4 | - | 5 | 20 | 16 | 0.2 | 13/16'' | 5/8'' | TX20 | 200 |
| KKTX525A4 | - | 5 | 25 | 21 | 0.2 | 1'' | 13/16'' | TX20 | 200 |
| KKTX530A4 | - | 5 | 30 | 26 | 0.2 | 1 3/16'' | 1 1/32'' | TX20 | 200 |
| KKTX540A4 | - | 5 | 40 | 36 | 0.2 | 1 9/16'' | 1 7/16'' | TX20 | 200 |
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