Harbor Zinc Anodes meet military specification alloy MIL-A-18001K, MIL-DTL-18001L and ASTM B 418 Type 1 alloy. HARBALUM Aluminum Anodes conform to alloy MIL-A-24779 alloy.

Oceanographic Instrument Anodes

Our ZOI series of anodes (zinc and aluminum) are designed for corrosion protection of sub-sea instrumentation. We are continually creating new designs in response to customer requests.

ZINC PART	ALUM PART	DIMENSIONS (INCHES)	HOLES / CORES (INCHES)	LBS Zn/Al
ZOI-1	-	.75 X 1.5 X 2	.28 dia x .5 c’sink	0.5
ZOI-2	-	.75 X 1.5 X 4	as above, 1.95 oc	1.1
ZOI-3	-	.87 X 1.25 X 3.75	.1 x .5 x 5.5	0.3
ZOI-4	AOI-4	1.75 dia x 1.25 th	.06 x 1 x 2 SS	0.7 / 0.3
ZOI-5	AOI-5	1.75 dia x 1.25 th	.25 NC SS, out .375	0.7 / 0.3
ZOI-6	AOI-6	2 dia x 2 th	.25 NC SS, out .375	1.5 / 0.6
ZOI-6A	AOI-6A	2 dia x 2 th	.06 x 1 x 2 SS	1.6 / 0.6
ZOI-7	AOI-7	1.25 dia x 1 th	1/4 NC SS, out .375	0.3 / 0.1
ZOI-8	AOI-8	1 dia x 1 th	10-24, out .375	0.2 / 0.1
ZOI-9	AOI-9	2.25 dia x 2.5 th	.06 x 1 x 2 SS offset	2.5 / 1
ZOI-10	AOI-10	1.125 dia x 1.75 th	.25 NC SS	0.4 / 0.2
ZOI-11	AOI-11	1 dia x 1 th	.25 NC SSx .375	0.2 / 0.1
ZOI-12	AOI-12	1 dia x 2 th	10-32 SS, out .5	0.4 / 0.2
ZOI-13	AOI-13	1.75 dia x 1.75 th	1/4-20 SS, out .5	1 / 0.4
ZOI-14	AOI-14	.125 x .5 x 1	solid plate (optional holes)	0.02 / 0.01
ZOI-15	AOI-15	.5 dia x .75 th	8-32 SS, out 1.25	0.04 / 0.02
ZOI-16	AOI-16	1 dia x 1.375 th	1/4-20 SS, out .5	0.04 / 0.02
ZOI-17	AOI-17	1.75 dia x 1.375 th	1/4-20 SS, out .5	0.9 / 0.3
ZOI-18	AOI-18	2.5 dia x 1.25 th	3/8 NC SS, out .375	0.04 / 0.02
ZOI-19	AOI-19	5/8" x 1" x 4"	.1" x .5" x 5-3/8" galv stl	1.6 / 0.6
ZOI-20	AOI-20	2.5 - 3.5 dia x 1.25 th	5/16 NC SS, out .875	1.9 / .75
ZOI-21	AOI-21	1.5 dia x 1 th	5/16 NC SS, out .5	.46 / .18
ZOI-22	AOI-22	1.5 dia x 1 th	1/4 NC SS, out .5	.46 / .18

ZOI-1 Oceanographic Cast

ZOI-5 Oceanographic Cast

ZOI-8

Oceanographic Cast

ZOI-12

ZOI-16

Oceanographic Cast

ZOI-20

ZOI-2 Oceanographic Cast

ZOI-6

Oceanographic Cast

ZOI-9

Oceanographic Cast

ZOI-13

ZOI-17

ZOI-21

ZOI-3

Oceanographic Cast

ZOI-6A

Oceanographic Cast

ZOI-10

ZOI-14

ZOI-18

ZOI-22

ZOI-4

Oceanographic Cast

ZOI-7

ZOI-11

ZOI-15

ZOI-19

Stern Tube Anodes / Cast Plates

Custom cast squares, rounds and rings. This casting process is economical verses buying solid plate stock, then cutting to size, creating waste. Customer options: solid material or cast-in cores, machined holes, cast-in holes.