A-dec® 1/4 - 20 x 5/8", Zinc Socket Head Cap Screw (Pkg-25 ea) (A-dec® #001.089.00) 1/4-20 x 5/8" Zinc 001-089-00 Included in 9053 Hardware Kit Replaces 24V Volt/150 Watt bulbs in older 6300 lights A-dec® is a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products.