The hollow bolts are widely used in lamp lighting, electrical accessories, machinery manufacturing, DIY handmade ornaments, etc., for socket expansion, and fixing ceiling chandeliers or other lamps.SpecificationColor: Silver ToneMaterial: Carbon SteelSurface Treatment: GalvanizingThread Size: M10 x 1mm x 12mmThrough Hole Bolt Size: 15 x 7 mm / 0.59 x 0.28 inch (H*ID)Hex Nut Size: 14 x 3 mm / 0.55 x 0.12 inch (Width*Thickness)Teeth Gasket: 2.5 x 10.5 mm / 0.1 x 0.41 inch (H*ID)Smooth Gasket: 16 x 10 x 0.7 mm / 0.63 x 0.39 x 0.03 inch (OD*ID*Thickness)Packing List: 15pcs x Through Bolt, 15pcs x Hex Nut, 15pcs x Teeth Gasket, 15pcs x Smooth GasketAdvantages1. Sturdy carbon steel material, surface plating, anti-corrosion, not easy to rust, easy to clean.2. The center of the bolt is hollow for light wires or wires to pass through.
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