3/16 MEDIUM HEAD MULTI GRIP RIVET This MultiGrip Rivet is a real time saver for many repair jobs and only requires one person. Unlike standard pop rivets these blind rivets do not require a backup washer. 1.) Works in over-sized oblong and worn out holes up to 1/4″2.) Tight clamp-up and holding power from .257″ to .598″ with stronger clamping power.3.) NO back-up washer needed. The MultiGrip action will clamp without needing a back up washer.4.) These rivets will work with any functioning blind rivet setting tool. These MultiGrip rivets are often used in applications where the holes have either become oval or just too big for standard 3/16″ diameter rivets. Rivet Style: Blind rivet Rivet Size: 3/16 in. Head Diameter: 1/2 in. Head Height: 0.062 Mandrel Diameter: 0.104 Grip Range: 0.275 - 0.598 in. Length: 0.750 Drill Size: 0.192 - 0.196 Shear Strength: 331 Tensile Strength: 486 Body Material: Aluminum Nail Material: Steel Quantity: Sold as a set of 250.