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Specification Category |
J-Hook Fastener Details |
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Material Type |
High-Tensile Mild Steel / Carbon Steel |
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Coating |
Hot-Dipped Galvanized (HDG) |
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Standard Lengths |
4", 6", 8", 10", 12" |
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Diameter |
6mm to 8mm (Standard) |
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Thread Type |
Fully Threaded or Partially Threaded Shank |
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Primary Usage |
CGI Sheet Roofing, Truss Mounting |
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Structural Logic |
Under-Purlin Anchoring / Tension Locking |
Structural Purlin Grip: Designed with a precise "J" curve radius to wrap securely around angle iron or pipe purlins, providing a rock-solid anchor point for roofing sheets.
Corrosion-Resistant Galvanization: Hot-dipped in a protective zinc coating to withstand extreme humidity and acidic rain, ensuring the fastener does not rust or weaken over time.
Extended Threaded Shank: Features deep, precision-cut threads that allow for easy adjustment and tightening, accommodating various thicknesses of insulation and roofing profiles.
Weather-Sealing Logic: Typically supplied with a bitumen or EPDM washer set to provide a watertight seal at the point of penetration, preventing ceiling leaks.
High-Tensile Steel Build: Manufactured from rigid carbon steel wire that resists bending under heavy wind uplift, maintaining the structural integrity of the roof envelope.