TIMco COLLATED DRY BLK COARSE 3.5 x 45Screws manufactured to JIS B1125 (1995) and independently tested to IFI specification ASTM C1002-89. 25ø "Super Sharp" (SS) point for ease of penetration. Coarse 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. Full batch-traceability to the original steel mill certificate. Designed to pierce and drill into 0.9 mm of metal channel. For larger gauge channel self-drilling drywall screws are recommended.
£13.12 excl. VAT