3.5 x 42mm Drywall Screw Black Phosphate (Box of 200)

These 3.5 x 42mm Black Phosphate Drywall screws are manufactured for the fixing of plasterboard to drylining studs but have a wide range of other suitable applications both professional and for DIY use. 60-degree twin thread, surface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility. Designed to pierce and drill into 0.9 mm of metal channel. For larger gauge, channel self-drilling drywall screws are recommended. Features: For fastening drylining and plasterboard to studwork Hardened screws with sharp point for fast installation Black phosphate finish for durability Made from C10-18 Steel 25 degree "Super Sharp" (SS) point for ease of penetration Manufactured to JIS B1125 (1995) Independently tested to IFI specification ASTM C1002-89

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