Packing unit: 1 TYPE: SHEET METAL SCREWS THREAD: NOT METRIC THREAD DIAMETER: 3.5MM LENGTH: 9.5MM HEAD: PAN-HEAD WITH I-STAR DRIVE: TORX® SURFACE: BLACK GALVANIZED Material: Steel QUALITY CATEGORY: NO QUALITY CATEGORY SEAL/WASHER: WITHOUT FOR SICHERUNGSDRAHT: NO LENGTH: 13MM LENGTH: 19MM