Marson 39303 Rivet Nut/Thread Setter Kit – Metric. Material: Plastic. Fastener Type: Rivet. Thread Size: 4mm, 5mm, 6mm, 8mm. Exterior Finish: Zinc. Metal Type: Plastic. Thread Type: Iso Metric. Inside Thread Size: M4, M5, M6, M8. Thread Style: Metric, Right Hand. Thread Coverage: Fully Threaded. Thread Class: Coarse. Screw Head Style: Screwdriver. Drive Style: Manual. Compatible Groove Diameter: 4 millimeters. Grade Rating: Commercial. Item Dimensions: 14 x 7.8 x 2.6 inches. Item Weight: 4 pounds. Number of Pieces: 75. Brand: Marson. UPC: 684055858030 051593393031. Set Name: Rivet Nut/Thread Setter Kit. Manufacturer: M39303. Model: Insert & Rivetnut Tools. Part Number: 39303. Unit Count: 1 Count. Material Type: Plastic. Finish Types: Plastic-Coated.