Drywall Screws Bugle Head Philips Drive Black 4.2 × 75mm 500/pk

Drywall screws - metric. Manufactured to JIS B1125 (1995) and independently tested to IFI specification ASTM C1002-89. "Super Sharp" (SS) point for ease of penetration. 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. Made from C10-18 Steel. Cosmetically plated in black phosphate. Designed to pierce and drill into 0.9 mm of metal channel. For larger gauge channel self-drilling drywall screws are recommended. Available in various Gauges and lengths