【Precise Size】The M4 M5 M6 universal rubber well nut,sealed bolt holes to prevent leaks. Every product has been strictly tested and tested. Thread Size: M4 M5 M6. Type: Rubber Rivet Nuts. 【Excellent Material】High Quality Rubber with Captive Brass Nut,resistant to vibration and corrosion.Flange holds fixing flush to mounting surface.Sleeve compresses to provide secure fixing, even in irregular shaped holes.
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