Home / Shop/ KKT COLOR · Cone-head A4 stainless decking screw
KKT COLOR · Cone-head A4 stainless decking screw
Supplied to order

Rothoblaas

KKT COLOR · Cone-head A4 stainless decking screw

Product code: KKT540A4M
£37.98 ex VAT
£45.58 inc VAT
Total: £37.98 ex VAT
Need a large quantity? Request a project quote
Not sure this is the right fixing for your connection? Send your drawing → get a spec & quote
Want this kept in UK stock for fast delivery? Tell us. We stock more of what customers ask for. No obligation to buy; we'll let you know when it's on the shelf.
Request this in UK stock →
Delivery sorted in the basket
One clear price · FREE over £500.
FREE delivery over £500
Tracked delivery UK wide.
VAT invoice with every order
Full VAT documentation for your records
14 days to cancel after delivery
Eligible online orders · See returns policy

KKT COLOR is a cone-shaped concealed-head decking screw in A4 / AISI316 stainless steel with an organic-coated coloured head in brown, grey or black. The small conical head sits flush in the timber and the coating camouflages the fixing against the deck or facade board for a clean finish. Built for outdoor use in highly aggressive environments such as coastal, chemically treated or carbonised timber.

  • A4 austenitic stainless steel (AISI316, CRC III) for very aggressive environments
  • Organic-coated coloured head, available in brown, grey or black, for camouflage with the timber
  • Small conical concealed head sits flush in the board
  • Inverse (left-hand) under-head thread for excellent grip and pull-through resistance
  • Three-lobed triangular thread cuts the grain cleanly for fast, controlled driving
  • Suitable for hardwood and softwood decking boards up to 550 kg/m³ without pre-drilling, up to 880 kg/m³ with pre-drilling, and for WPC boards (with pre-drilling)
  • Ideal for carbonised (burnt-effect) and acetylated timber
  • Service class: SC1 to SC4. Atmospheric corrosivity: C1 to C5. Wood corrosivity: T1 to T5
  • CE marked under EN 14592
  • TX 20 drive, bit included in the box
  • Sold per box. Pack: 200 screws (5 × 70 mm: 100 screws)

Price shown is per box. Select size and colour to see the price.

DeckingConcealed fixingHardwood & softwood boardsWPC boardsCarbonised & acetylated timberStainless A4Coastal & humid sitesCorrosive environmentsOutdoor & exposed useService class 4
Working out a whole connection? Get exact box quantities with our Fastener Calculator. Open calculator →

All sizes in the KKT COLOR · Cone-head A4 stainless decking screw range

Search by code or size, set quantities, and add any sizes straight to your basket.
CodeColourSizePack Price ex VAT Stock Order
KKT540A4MBrown5 × 40 mm— £37.98To order
KKT550A4MBrown5 × 50 mm— £48.42To order
KKT560A4MBrown5 × 60 mm— £52.16To order
KKT570A4MBrown5 × 70 mm— £34.13To order
KKT550A4GGrey5 × 50 mm— £48.42To order
KKT560A4GGrey5 × 60 mm— £52.16To order
KKT550A4NBlack5 × 50 mm— £48.86To order
KKT560A4NBlack5 × 60 mm— £52.58In stock
No sizes match your search.

Often ordered together

Rothoblaas SNK EVO · Countersunk timber screw, C4 coating
In stock
Rothoblaas
200 per box
From £6.61ex VAT
Rothoblaas M53 · Round sleeve post base with rod for concrete
Rothoblaas
1 per box
From £15.31ex VAT

5–7 days

Rothoblaas TLL · Flange-head timber screw
In stock
Rothoblaas
100 per box
From £7.63ex VAT
Rothoblaas VGS · Fully threaded screw
Rothoblaas
50 per box
From £16.13ex VAT

5–7 days

Rothoblaas R70 · Adjustable post base for concrete, view 3
In stock
Rothoblaas
1 per box
From £10.27ex VAT
Rothoblaas WKR · Tensile angle bracket for buildings
Rothoblaas
1 per box
From £3.48ex VAT

5–7 days

Rothoblaas UV T · Timber-to-timber dovetail connector
Rothoblaas
1 per box
From £22.35ex VAT

5–7 days

Loading basket...
£37.98 KKT540A4M · ex VAT
Need it faster? Email us before you order. We will check whether we can beat our standard lead time on your order, and what that would cost. info@timbasystems.com