Jandorf
4 pack, 3/8"d, 8-32 thread, solid brass ball, cap nut, use for ceiling fixtures to secure the canopy or blank up, perfect for use with a canopy with a crossbar lock up, secure the canopy to the crossbar with screws & the brass ball cap nuts.
Cooper Lighting Halo HLBSL609FS5 Round 6" Slim c-Canless LED Downlights
Leviton 004-3152-8 Porcelain Keyless Screw Terminal Lampholder ~ 660w
Leviton 003-124-D Pigtail Type Incandescent Lampholder
Leviton 019-8101 Lamp Holder, Porcelain
Cooper Lighting HALO SMD6 LED 6" Round/Square Surface-Mount Downlights