1x Brass hexagon locknut. This kit includes:1x 10x50mm 26tpi threaded rod. 1x 1/2" to 10mm reducer.
M10 10mm Brass Hex Nuts for Lamp Holder Pack of 5
1/2" Male To 10mm Female Brass Lamp Holder M10 Thread Reducer Bush Adaptor
Brass Lampholder Kit with M10 10mm Reducer, Allthread Rod, Fibre Washer, Hex Nut
Brass Allthread Coupler M10 10mm or 1/2" Inch 26tpi x2
DOITOOL 4pcs Brass Lamp Neck Connector: M10 Threaded Coupling Parts - T-Shaped Connector for Lighting Fixtures - Lamp Pipe Brass Fittings
M10 10mm Lamp Holder Fixing Kit 50mm Threaded Rod with Hex Nut and Washers