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METAPP® Hex Washer Head Screw

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METAPP® Hex Washer Head Screw
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Valley Fixing Screw — Hex Washer Head Roofing & Sheet Metal Screws

METAPP® Valley Fixing Screws are precision-engineered hex washer head roofing screws and sheet metal screws positioned as self-piercing screws with a built-in washer at the head — providing load distribution and torque resistance. The catalogue calls out the bonded washer advantage, making these the preferred roofing fasteners for valley fixing in metal roofing systems.

Whether specified as self drilling screws for direct metal-to-steel sheet fastening, as metal to metal fasteners for cladding and box rib profiles, or sourced from a trusted self drilling screws India supplier, METAPP® delivers consistent sealing performance and reliable sheet anchorage across commercial and industrial roofing projects.

Specifications

Material: Carbon Steel
Head Type: Hex Washer Flange
Thread: Full Thread
Drill Point: LEVIN® Drill Point
Drilling Capacity: Max 5.5mm
Washer: Grey EPDM Washer

Best-Fit Applications

C-Purlins and Z-Purlins — for hex washer head roofing screws
Light structural steel framing — for self drilling screws
Secondary steel members in pre-engineered buildings — for metal to metal fasteners

Where METAPP® Valley Fixing Screw with flange is Used?

Use-case:
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Direct fastening of metal roofing and wall cladding sheets through the valley (low point) into supporting steel members for secure sheet anchorage — the primary role of sheet metal screws and hex washer head roofing screws.
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Fixing corrugated and trapezoidal / box rib profiles to light-gauge steel framing systems — where self drilling screws and metal to metal fasteners must deliver consistent torque and clamping force.
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Wall and side cladding installations where uniform load transfer and close sheet-to-frame contact are required — relying on roofing fasteners and sheet metal screws with wide bearing flange support.
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Applications requiring wide bearing surface under the head (flange) for improved pull-through resistance and sheet stability — where hex washer head roofing screws outperform standard fastener heads.
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Installations where controlled perpendicular driving ensures optimal sealing performance and minimizes water ingress — the hallmark of quality self drilling screws India contractors rely on for long-term roofing fasteners performance.

Optional “Common sectors”:

  • EPDM sealing with hex washer flange ensures weatherproof connection for sheet metal screws

  • Secure roofing sheet assembly with consistent clamping — trusted roofing fasteners

  • Durability, leak resistance & long-term performance for self drilling screws India projects


Fastener Types

METAPP®

Bonded EPDM sealing with a hex washer head ensures a tight, weatherproof connection.
It provides secure assembly of roofing sheets onto steel frames with consistent clamping force.
Designed to enhance durability, leak resistance, and long-term roofing performance.

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METAPP Metal Roofing_

Quality Checks

METAPP® valley flange fasteners are subjected to stringent quality checks to ensure firm seating and leak-proof reliability. As precision-engineered hex washer head roofing screws and sheet metal screws, material strength, dimensional precision, and corrosion resistance are verified for long-term roofing performance.

Steel quality validated for dependable strength — essential for metal to metal fasteners in valley fixing applications.
Flange dimensions inspected for accurate fit — critical for hex washer head roofing screws achieving uniform load transfer.
Thread profile checked for secure anchorage — ensuring self drilling screws bite and hold in light-gauge steel framing.

How to Select the Right METAPP® Valley Fixing Screw?

Confirm roof profile compatibility – Choose a flange shape that fits correctly into the sheet valley for stable seating — selecting the right hex washer head roofing screws and sheet metal screws for the profile type.
Check load distribution needs – Ensure the flange provides adequate bearing area to prevent sheet deformation — critical for roofing fasteners and metal to metal fasteners in valley fixing systems.
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Quality Checks

Protective coating tested against corrosion — the standard for roofing fasteners and self drilling screws India suppliers.
Torque and pull-out performance confirmed — validating METAPP® as reliable sheet metal screws for structural cladding work.
Sealing performance verified — ensuring every hex washer head roofing screw maintains watertight fixing under dynamic loads.

How to Select the Right METAPP® Valley Fixing Screw?

Verify sealing support – Use designs that work effectively with sealing washers for watertight fixing — the standard for self drilling screws and roofing fasteners in exposed roofing environments.
Consider environmental exposure – Select corrosion-resistant materials or coatings for long-term durability — essential for self drilling screws India projects and metal to metal fasteners in coastal or industrial conditions.

Installation guidance

Drive perpendicular through sheet into steel.
Tighten until bonded washer seals uniformly.
Avoid under/over-driving to maintain weather seal.
Get a Quote for Bi-Metal Fasteners & Self Tapping Bolts for Aluminum – Asons Enterprise

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