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To suit 5.5mm and 6.3mm thread diameter tek screws.
Galvanised steel washer backed with bonded rubber EPDM for watertight seal.
Washer diameter: 19mm
Hole size: 5.8mm
We will be closed from 4pm, 2nd April 2026 and will reopen 8am, 7th April 2026.
To suit 5.5mm and 6.3mm thread diameter tek screws.
Galvanised steel washer backed with bonded rubber EPDM for watertight seal.
Washer diameter: 19mm
Hole size: 5.8mm