Mercury out-drive zinc anodes meet the MIL-A-18001K alloy and are 95% efficient. Aluminum Anodes conform to the MIL-A-24779 alloy and are 85% efficient. We do not recommend the usage of Aluminum anodes in fresh or lower levels of brackish water.

Mercury Anodes

ZINC PART	STYLE	DIMENSIONS (INCHES)	HOLE(S) (INCHES)	LBS
M-31640	std skeg	skeg: 2.3 long	-	1
M-34127	long skeg	skeg: 4 long	-	1.6
M-34762	plate	.4 x 2.5 x 2.5	2.0 oc	0.6
M-43396	waffle plate	.6 x 2.1 x 2.5	6.75 oc	1.5
M-43994	waffle	1.5 x 3 x 4	2.6 oc	2
M-46399	cutdown skeg	skeg: 2.4 long	-	0.75
M-55989	button	1.2 dia x 1.2 long	1/2 NC	0.25
M-76214	round plate	3.6 dia x 2 long	7/16 NC	0.64
M-76214-5	round plate	3.6 dia x 2 long	7/16 NC	0.7
M-806105	ring w/ears		2.9 oc	1
M-806188	open ring w/ears	2.1 id x 2.7 od	2.9 oc	1
M-806189	Alpha horseshoe	.5 x 1.9 x .8	1.5 oc	0.25
M-806190	Bravo horseshoe	1.93 od x 2	1.5 oc	0.7
M-818298	bar	.5 x 2 x 7.5	6.6, 7.0 oc	1.7
M-821629	Alpha plate	.7 x 2.9 x 7.5	3.3 oc	1.7
M-821630	Bravo plate	.6 x 4.2 x 7	1.4 oc	2.1
M-821631	use: M-43994	-	-	-
M-822157	cutdown skeg	1/2 skeg: 2.6 long	1	1
M-823912	disc	.8" od x .3 thick	.25	0.1
M-826134	wedge	.5 -.9 x 1.2 x 3	0.5	0.5
M-89949	handlebar	.4 x 2.3 x 11.12	2.5	2.5
M-865182	cone	1.25 - 2.05 od x 2.4 long	1.5 hex, , .3 hole	1