Metal Nipple, Washers & Nuts (10mm) Kit
1 x 10mm All Thread 20mm
2 x 10mm Washer
2 x 10mm Locknut
This selection of parts will enable you to fit a lampholder with a 10mm threaded entry to a light fitting where both sides can be accessed and the panel does not exceed 12mm thickness.
Before starting any electrical work, always switch off at the mains. If in doubt consult a competent electrician