Home » Rivbulb Double-locking System Rivbulb Double-locking System Mandrel Material Carbon steel Surface Green trivalent electroplating blue white zinc Body Material Carbon steel Surface Green trivalent electroplating blue white zinc Installation Sequence Secured,effective installation High-strength structural blind riveting. Blind-side installation with access from one side only. Double-locking system for a secure and stable joint. Large blind-side expansion for improved load distribution. High retaining force after riveting. Good resistance to vibration and loosening. Fast and simple installation. Suitable for thin sheet and demanding structural applications. Structure and parameters Technical Parameters Recommended tool Parameter C864 C848 Capacity All Materials Φ3.2 — Φ6.4mm Φ2.4 — Φ4.8mm Pressure Required 0.5 — 0.7Mpa 0.5 — 0.7Mpa Pull Force ≥14.68Kn ≥9Kn Weight 1.64kg 1.45kg