Learning Center Reference Charts Light Bulb Base Chart Click or tap on a base to view matching bulbs from our catalog. Screw Bases 10mmMiniature Screw (E10) 11mmMiniature Candelabra (E11) 12mmCandelabra (E12) 14mmEuropean (E14) 17mmIntermediate (E17) 26mmMedium (E26) 39mmMogul (E39) Fluorescent Pin Bases Miniature Bipin Medium Bipin Single Pin Recessed Double Contact 4-Pin 2GX-13 Twist & Lock Bases 10mmGU10 24mmGU24 Bi Pin Bases 4mmG4 4mmGU4 5mmG5 5.3mmGU5.3 5.3mmGX5.3 5.3mmGY5.3 6.35mmG6.35 6.35mmGY6.35 6.35mmGZ6.35 8mmGY8 8.5mmG8.5 9mmG9 9mmG9 Pin Blade 9.5mmG9.5 9.5mmGY9.5 9.5mmGZ9.5 12mmG12 Bayonet Bases Miniature Bayonet Double Contact Bayonet (BA15d) Single Contact Bayonet (BA15s) Index Double Contact Bayonet Wedge Bases Wedge Wedge D.F. Wedge S.F. RX7s Slide Wedge Subminiature Compact Fluorescent Plug In Bases 2G7 2GX-7 2G11 G23 G24d-2 G24d-3 G24q-1 G24q-2 G24q-3 GX23 GX23-2 GX24q-2 GX24q-3 GX24q-4 GX24q-5 Miniature & Automotive Bases Right Angle Prefocus Axial Prefocus Straight Midget Flanged Single Contact Miniature Flanged Single Contact Miniature Single Contact P28S PK22s PX26d Specialty Bases Festoon 3 Contact Lugs Mogul End Prong (GX16d) PGJ5 Side Prong Lead wires Cable Bases MALE FLAT FEMALE ROUND FEMALE FLAT PK30d Miscellaneous Bases GU6.5