SAE J531_201511 Standard includes dimensional specifications for square hexagon countersunk headless types of pipe, filler, and drain plugs commonly used in automotive and related industrial applications.
Figure 3 - Square countersunk headless pipe plugs (NPTF)
Figure 3A upset 130109G
Figure 3B broached 130109H
Figure 3C E cast 130109J
Figure 4 - Square countersunk headless filler and drain plugs (PTF)
Figure 4A upset 130109K
Figure 4B broached 130109L
Figure 4C E cast 130109M
Figure 5 - Hexagon countersunk headless pipe plugs (NPTF)
Figure 5A upset 130109N
Figure 5B broached 130109P
Figure 5C cast 130109R
Figure 6 - Hexagon countersunk headless filler and drain plugs (PTF)
Figure 6A upset 130109S
Figure 6B broached 130109T
Figure 6C cast 130109U
