AS4156D Color-Coded Incandescent Flange Base T-1 and T-1 3/4 Lamps for Voltage Identification
Stabilized
12/19/2025
- Content
- This document specifies that black is the only color that can be used for the insulator at the bottom of the base of T-1 and T-1 ¾ Flanged Base lamps.
- Pages
- 2
- Citation
- SAE International Technical Standard, Color-Coded Incandescent Flange Base T-1 and T-1 3/4 Lamps for Voltage Identification, SAE Standard AS4156D, Stabilized December 2025, Reaffirmed March 2020, Revised July 2014, Issued October 1989, .