Import Black Phosphated Bugle Head Drywall Screw — Buy in Bulk from Supplier in China

The black phosphated bugle head drywall screw from Anping Huhao Metal Products Group Ltd. is a hardened carbon steel fastener engineered for securing gypsum plasterboard to timber or light-gauge steel studs. The bugle head profile seats flush below the paper face without tearing, while the black phosphate conversion coating provides moderate corrosion resistance and reduces galling during power driving. These screws are manufactured in China and are available in multiple lengths and gauges to match common board thicknesses and substrate densities.

The core material is typically C1022 case-hardened steel, a standard grade for drywall fasteners, offering sufficient ductility to resist snapping under torque yet hard enough to self-tap into light steel. The phosphate layer is applied by immersion in manganese or zinc phosphating solution, yielding a matte black finish that accepts paint and acts as a lubricant during installation. Thread configuration is usually a twin-fast or high-low pattern optimised for timber or metal, with a sharp 25-degree point for rapid penetration. Diameters commonly range from 3.5 mm to 4.8 mm (6 to 8 gauge) and lengths from 19 mm to 80 mm, though the exact size matrix should be confirmed with the supplier.

Contractors use these screws for residential and commercial drywall hanging, ceiling board attachment, and fixture mounting where a concealed fastener is required. The black phosphate finish suits dry interior environments; for humid or exterior applications, a zinc-plated or ceramic-coated alternative would be more appropriate. Buyers should verify the supplier's stock list, minimum order quantities, and whether collated strips or bulk boxes are offered. The supplier's profile indicates limited response data, so direct enquiry about lead times, Incoterms, and available certifications is advisable before committing to an order.

Anping Huhao Metal Products Group Ltd. is headquartered at 1-1309 Ruizhu Building, 239 Nanjing Road, Heping District, Tianjin 300000, China. The supplier is classified at harbour trust tier and is marked as an imported supplier on the platform. The response rate is recorded as 0.00 percent with an average response time of zero hours, which signals that direct communication channels may be unreliable or that the profile has not yet generated measurable engagement. Buyers should treat this as a flag to test responsiveness before placing large orders.

The listing positions the company as a source of black phosphated bugle head drywall screws with flexible quantity options and mentions compliance with industry standards, though no specific certification numbers or test reports are provided in the source data. The supplier's product range appears to focus on metal fasteners for construction. Given the absence of verified response metrics, buyers are advised to request a current catalogue, mill test certificates for the steel grade, and confirmation of phosphate coating thickness and salt-spray performance. No information on annual turnover, factory floor space, or client references is available, and none should be assumed.