M3 x 15.5 Steel Grooved Countersunk Head, Round Closed End Rivet Nut, Grip range 1.50 – 2.5mm, Hole Size 5.1mm

Steel, zinc plated
90° countersunk head allows rivets to be set flush with the material surface
Grooved body expands radially when setting to grip the substrate
Provides extra resistance to turning particularly in thin and soft materials
Sizes shown are thread size x original length
For best results, hole diameter should be 0.1mm larger than rivet nut body
Grip range: Total thickness of material being fastened together