CORROSHIELD® Fasteners METAPP® Crest Fixing Screw
The catalogue positions crest fixing screws for roofing profiles to steel purlins, noting different lengths may be needed based on profile type, insulation blankets, or crest heights. METAPP® serves as the preferred profiled roofing sheet screws and metal sheet screws for steel purlins for demanding roofing installations — including self drilling screws for insulated roof assemblies where longer fastener lengths are required.
Whether you need C purlin roofing screws, Z purlin fixing screws, or roofing crest fix fasteners for cold-formed steel systems, METAPP® delivers reliable performance. Trusted by PEB roofing sheet fasteners India contractors, corrugated roofing screws India distributors, and every warehouse roofing screws supplier network across the country.
Whether you need C purlin roofing screws, Z purlin fixing screws, or roofing crest fix fasteners for cold-formed steel systems, METAPP® delivers reliable performance. Trusted by PEB roofing sheet fasteners India contractors, corrugated roofing screws India distributors, and every warehouse roofing screws supplier network across the country.
Specifications
Material: Carbon Steel
Head Type: Hex Washer Flange
Thread: Double thread + ScratchShield™
Drill Point: LEVIN® Drill Point
Drilling Capacity: Max 5.5mm
Washer: Grey EPDM washer
Best-Fit Applications
Crest fixing of profiled roofing sheets to cold rolled purlins
C-purlin / Z-purlin systems — cold-formed steel framing
Where METAPP® Crest Fixing Screw is Used?
Use-case:
/1
Fastening profiled metal roofing sheets through the crest (high point) into supporting steel purlins — the core application for crest fixing screws and profiled roofing sheet screws.
/2
Roofing systems where elevated fixing enhances drainage performance and reduces direct water exposure at fastening points — a key advantage of roofing crest fix fasteners over valley fixing alternatives.
/3
Insulated roof assemblies requiring longer fasteners to accommodate insulation blankets, spacer systems, or higher rib profiles — where self drilling screws for insulated roof are specifically required.
/4
Pre-engineered roofing installations where secure anchorage to cold-formed steel members is essential — the standard for PEB roofing sheet fasteners India and metal sheet screws for steel purlins.
/5
Applications demanding strong pull-out resistance and reliable sealing under dynamic wind loads — critical for corrugated roofing screws India projects and every warehouse roofing screws supplier specification.
Optional “Common sectors”:
Pre-Engineered Buildings (PEB), Factories, Manufacturing plants, Warehouses, Solar mounting structures, Cold rooms, Food processing plants, Coastal industrial buildings, Airport hangars, Metro stations, Railway platform shelters.
Fastener Types
METAPP®
Crest fixing for profiled roofing sheets to steel purlins ensures strong and accurate fastening at the sheet crest.
The sealed fixing provides enhanced protection against water ingress and environmental exposure.
Engineered for reliable engagement, delivering long-term performance and structural security.
Quality Checks
METAPP® crest fixing screws are subjected to strict quality checks to guarantee secure fastening and weather-tight performance. Every piece is evaluated for material integrity, precision manufacturing, and durability on the roof — meeting the standard expected of profiled roofing sheet screws and roofing crest fix fasteners in demanding environments.
Steel quality verified for dependable strength.
Heat treatment monitored for uniform hardness.
Thread profile inspected for firm anchorage.
Coating tested to resist corrosion.
Drive and pull-out performance confirmed.
How to Select the Right METAPP® Crest Fixing Screw?
Confirm the roof profile – Select a screw designed for crest fixing to ensure correct positioning and load distribution — matching the right crest fixing screw and profiled roofing sheet screws to the profile type.
Check purlin thickness – Match the drill point type and screw length with the supporting steel gauge — critical for C purlin roofing screws, Z purlin fixing screws, and metal sheet screws for steel purlins.
Ensure weather sealing –Use EPDM bonded washers to maintain watertight performance at the crest — the standard for reliable roofing crest fix fasteners and self drilling screws for insulated roof installations.
Consider environmental exposure – Choose corrosion-resistant coatings suitable for coastal or industrial conditions — essential for PEB roofing sheet fasteners India, corrugated roofing screws India, and every warehouse roofing screws supplier specification.
Installation guidance
Choose length based on profile height and any insulation layer.
Drive perpendicular at the specified crest point.
Set washer correctly (sealed, not crushed).
