uxcell M5 x 0.8mm Pitch Female Threaded Carbon Steel Square Weld Nuts 40 Pcs Thread Size: M5 / 0.2''; Product Name: Square Weld Nuts; Material: Carbon Steel Weight: 69g; Package Content: 40 x Square Weld Nuts Main Color: Gray; Width Across Flats: 8mm / 0.3'' Width Across Corners: 11mm / 0.43''; Thickness: 4mm / 0.16'' Pitch: 0.8mm; Grade: 4.8