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 PARTALUM PARTDIMENSIONS (INCHES)HOLES / CORES (INCHES)LBS Zn/Al
ZOI-1-.75 X 1.5 X 2.28 dia x .5 c’sink0.5
ZOI-2-.75 X 1.5 X 4as above, 1.95 oc1.1
ZOI-3-.87 X 1.25 X 3.75.1 x .5 x 5.50.3
ZOI-4AOI-41.75 dia x 1.25 th.06 x 1 x 2 SS0.7 / 0.3
ZOI-5AOI-51.75 dia x 1.25 th.25 NC SS, out .3750.7 / 0.3
ZOI-6AOI-62 dia x 2 th.25 NC SS, out .3751.5 / 0.6
ZOI-6AAOI-6A2 dia x 2 th.06 x 1 x 2 SS1.6 / 0.6
ZOI-7AOI-71.25 dia x 1 th1/4 NC SS, out .3750.3 / 0.1
ZOI-8AOI-81 dia x 1 th10-24, out .3750.2 / 0.1
ZOI-9AOI-92.25 dia x 2.5 th.06 x 1 x 2 SS offset2.5 / 1
ZOI-10AOI-101.125 dia x 1.75 th.25 NC SS0.4 / 0.2
ZOI-11AOI-111 dia x 1 th.25 NC SSx .3750.2 / 0.1
ZOI-12AOI-121 dia x 2 th10-32 SS, out .50.4 / 0.2
ZOI-13AOI-131.75 dia x 1.75 th1/4-20 SS, out .51 / 0.4
ZOI-14AOI-14.125 x .5 x 1solid plate (optional holes)0.02 / 0.01
ZOI-15AOI-15.5 dia x .75 th8-32 SS, out 1.250.04 / 0.02
ZOI-16AOI-161 dia x 1.375 th1/4-20 SS, out .50.04 / 0.02
ZOI-17AOI-171.75 dia x 1.375 th1/4-20 SS, out .50.9 / 0.3
ZOI-18AOI-182.5 dia x 1.25 th3/8 NC SS, out .3750.04 / 0.02
ZOI-19AOI-195/8" x 1" x 4".1" x .5" x 5-3/8" galv stl1.6 / 0.6
ZOI-20AOI-202.5 - 3.5 dia x 1.25 th5/16 NC SS, out .8751.9 / .75
ZOI-21AOI-211.5 dia x 1 th5/16 NC SS, out .5.46 / .18
ZOI-22AOI-221.5 dia x 1 th1/4 NC SS, out .5.46 / .18

ZOI-1Oceanographic Cast

ZOI-5Oceanographic Cast

ZOI-8

Oceanographic Cast

ZOI-12

ZOI-16

Oceanographic Cast

ZOI-20

ZOI-20

ZOI-2Oceanographic Cast

ZOI-6

Oceanographic Cast

ZOI-9

Oceanographic Cast

ZOI-13

ZOI-17

ZOI-17

ZOI-21

ZOI-21

ZOI-3

Oceanographic Cast

ZOI-6A

Oceanographic Cast

ZOI-10

ZOI-14

ZOI-18

ZOI-18

ZOI-22

ZOI-21

ZOI-4

Oceanographic Cast

ZOI-7

Oceanographic Cast

ZOI-11

ZOI-15

ZOI-19

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.

TYPEDIMENSIONSLBS
ZINCto customer specs.258 lbs/cu in
ALUMINUMto customer specs.1 lbs/cu in

Squares

Oceanographic Cast

Rounds

CUSTOM-01

1/2 Rings

Half Ring Plate

Stern Tube Anodes  (To Customer Specs)

zinc ring 2

Stern Tube Anodes  (To Customer Specs)

zinc ring 1a

1/2 Rings

PartIDODThickLbs (ea 1/2)
WesMar 6.6256.6258.515.75
16.520.625115.5
21.12530.51.12555
3138149
3139157

Full Circles (Not Shown)

Half Ring Plate

WesMar 6.625

wesmar 6.625

1/2 Ring Combinations

ID’s16.521.12521.521.7521.7522.12522.37523.87524.252526.2531
OD’s19.7520.530.2530.531.37531.532.75