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Polycarbonate Roofing Screw ST5.5 Hex Washer Head

Hex-washer-head self-tapping screw for polycarbonate roofing, with bonded EPDM washer.

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⚡ Sourcing insights

Commercial suitability

ISO 7053 screw pairs a Type C timber-cutting point with a bonded EPDM sealing washer.

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ISO 7053:2019 product grade A

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Type C sharp point for self-tapping into timber

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Bonded EPDM washer on galvanized backing

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A2-20H and A4-20H stainless options available

Pro tip: For polycarbonate roofing, match screw length to sheet thickness and purlin depth, and check washer compression to avoid leaks.

Specifications

Product Standard ISO 7053:2019, product grade A
Base Material C1022 cold-heading steel, case-hardened
Size Range ST3.9 to ST6.3
Sealing Washer Bonded EPDM on galvanized backing
Roofing Specialist Hardware & Fasteners

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Supplier

F

fastoscrews.com

Fastener manufacturer and supplier

🇨🇳 Xi'an, Shaanxi, China

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