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OCWS Stainless steel self-drilling screws 5.5x25 mm with washer S14 - cardboard box - 200 pcs.

Steel

OCWS-55025S14

5906675320533

Koelner

Stainless steel self drilling screw with reduced drilling point guarantees optimum tightness of the fastening

Define product parameters:

Diameter
Length
Color RAL
Washer
Packaging and quantity
Weight and bulk packaging
  • Unit pack

    200.00 pcs.1.22 kg

  • Bulk pack

    3200.00 pcs.19.79 kg

  • Pallet

    76800.00 pcs.475.06 kg

Features

Stainless steel self drilling screw with reduced drilling point guarantees optimum tightness of the fastening

  • The stainless steel self-drilling screw manufactured in BIMETAL technology combines high mechanical strength with excellent corrosion resistance.
  • The case-hardened thread ensures high cutting performance and secure anchorage in the substrate, while maintaining a ductile core. This increases resistance to dynamic loads and reduces the risk of screw fracture.
  • The reduced drill point enables fast drilling start and precise screw guidance, minimizing the risk of slipping on the sheet surface and damage to the protective coating.
  • The thread extended up to the head prevents screw overdriving and ensures strong clamping of the connected elements. It allows installation without a sealing washer in applications where watertightness is not required.
  • The specially designed thread geometry and pitch enable stable and durable fastening of profiled sheets to each other, ensuring high load-bearing capacity of the joint.
  • The self-vulcanizing EPDM sealing washer is resistant to UV radiation, ageing, and temperature fluctuations. It guarantees long-term watertightness and protects the joint against water ingress.
  • The screw is intended for outdoor applications and maintains its performance in environments with elevated humidity and significant temperature variations.

Substrates

Metal sheet & profiles

Metal sheet & profiles

Structural steel

Structural steel

Approved surfaces

Applications

Profiled and cover sheets

Full list of variations

Substitutes

Services

Installation guide

Installation manual

Installation step by step

1

Using the magnetic attachment, tighten the screw with washer using a screwdriver with adjustable torque.

2

Screw properly tightened.

Installation data

Approvals and publications

Technical library

(5)

Technical assessments(2)

ETA-24/0237 (2026-09-02) - Fastening screws for metal members and sheeting

Fastening screws for metal members and sheeting

UKTA-22/6336

UKTA-22/6345

Declarations(2)

DoP-24/0237 OCWS (ETA-24/0237 - Self-drilling screws)

OCWS - Fastening screws for metal members

UKTA-DoP-22/6336-OCWS-48/55

Certificates(1)

1488-CPR-0752/Z (ETA-24/0237 - Self-drilling screws)

CPR - ETA-24/0237 (2024-12-20) - Fastening screws for metal members and sheeting

Catalogues and product cards

(2)

Product cards(1)

Product card

Catalogues(1)

Catalogue

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