Shanghai Zinsn Industrial Co., Ltd. · Shanghai & Haiyan, China +86 21 6487 6003 [email protected]

Colored Roofing Screw, Self-Drilling

Painted head matched to roof panel color. Self-drilling tip eliminates pilot holes on steel purlins up to 5 mm.

Colour-coated hex washer head roofing screw with bonded EPDM washer and drill point
Roofing Screws

Specification

HeadHex washer with bonded EPDM seal
CoatingColour polymer over zinc base
PointSelf-drilling
Diameter5.5 – 6.3 mm
Length19 – 100 mm
DriveHex 5/16" or 8 mm
Standard coloursRAL matched — red, green, blue, brown, black, white, more
StandardsDIN 7504K, ASTM C954

Custom sizes, finishes and OEM packaging available. Samples shipped within 5 working days of approval.

Why it is built this way

Engineering notes

On a coated metal roof, the fixings are the only thing breaking up the colour field — and there can be thousands of them. Matching the head to the panel is what turns a fixing pattern from a visible grid of dots into something the eye skips over. We coat to RAL references so a specifier can name a colour rather than send a sample.

Underneath the paint it is a full-specification roofing fastener: hardened drill point rated to steel purlins within the 1.5 – 5 mm capacity band, bonded EPDM washer under the hex head, and a zinc base layer beneath the polymer so that a scratch in the colour coat does not start a rust bloom.

Key features

  • RAL-matched colour polymer head over a zinc base coat
  • Bonded EPDM washer seals the penetration under compression
  • Self-drilling point removes pilot drilling on steel purlins
  • Colour coat and zinc base applied to the same DIN 7504K blank

Typical applications

  • Metal roof panels
  • Steel cladding
  • Agricultural buildings
  • Warehouses & sheds
  • Carports
  • Industrial roofing

Buyer questions

Frequently asked

Can you match our panel manufacturer's colour?
Send the RAL reference or a physical panel offcut. We coat to RAL references as standard and can match against a sample for volume orders.
How thick a purlin will it drill?
The drill capacity band is 1.5 – 5 mm of steel depending on the flute specified. Tell us the purlin thickness and we will match the point.
Does the colour coat fade?
The polymer system is specified for UV exposure. For coastal or high-UV projects we normally also recommend the Ruspert base — ask us for the comparison before you specify.

Related technical guides

Ordering information. FOB Shanghai or Ningbo as standard; CIF and DDP available. Mill test certificates, SGS reports and dimensional inspection records are issued on request. See available documents.

Quote Colored Roofing Screw, Self-Drilling

Send diameter, length, finish, packaging and target volume. Pricing, lead-time and Incoterms come back within one business day.