BA9 base is a Bayonet base with a diameter of 9mm (0.35in) BA9s (single contact) The BA9s base has a diameter of 9 mm with one contacts on the bottom and two parallel lugs on opposing sides of the base 180 degrees apart.

Choose from our selection of BA9s base light bulbs, including over 100 products in a wide range of styles and sizes. Same and Next Day Delivery.

1445 LED Bulb BA9S LED 12V, 1985/1993/53/57 Miniature Bayonet Base Lights for RV Camper Trailer Car Boat Interior Light Bulbs, Daylight White 6000K 4-Pack

Halogen Interior Lamp Bulbs. BA9s Base. Hella marine bulbs are top quality products sourced from leading international bulb manufacturers.

For Cars, Trucks, Tractors and Motorcycles.

Buy RS PRO Red Indicator Lamp, 220/250V, BA9s Base . Browse our latest Indicator Lamps offers. Free Next Day Delivery available.

A premium quality LED drop-in replacement for 28-Volt AC/DC, T3-1/4 "tubular shape" single-contact miniature bayonet base (Ba9s) miniature light bulbs. Dimensions are identical to filament version for a no-questions drop-in replacement.

Buy Ruiandsion 10pcs BA9S LED Bulb 120V AC/DC LED 9mm BA9s Base LED Replacement Bulb for Indicator Pilot Light,Red: Bulbs - Amazon.com FREE DELIVERY possible on eligible purchases

Perfect to use anywhere you are using a 6 volt T3 1/4 with BA9s base. No lead or mercury means easy and environmentally safe disposal. 2.4 Lumens initial light output is comparable to many lower wattage halogen capsules. Not recommended for use in enclosed fixtures because heat buildup can shorten life. Do not "hot swap" this lamp.

BA9s miniature lamps have a 9mm diameter base with a single contact and two side lugs that twist and lock into a BA9s-compatible socket. They are commonly used in illuminated push-button switches, dashboards, dome lights, and chart lights.