Zinc Nuts and Collars in Special High Grade Zinc
The Practical Answer To Electrolysis
The use of Zinc Nuts and Collars on or near the underwater fittings of your boat or water craft absorbs the corrosive actions of electrolysis which normally attacks brass or bronze fittings. The fitting of Zinc Nuts and Collars to your boat's fittings will greatly enhance their working life and provide a dual protection of Safety & Economy.
Zinc Nut showing internal showing propeller point for snug fitting.
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Zinc Nut offered to Propeller Nut in operational mode.
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Proper Size Is Important:
Zinc Nuts are designed to fit snugly against the points of standard Propeller Nuts. For best results, compare the point-to-point diameter of the propeller nut with the inside diameter of the Zinc Nut. In remote cases some machining to a smaller size may be desired for a closer fit of the Zinc Nut.
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Zinc Nut Sizes:
Part
Number |
Zinc Nut
Number |
Outside Dimension |
Inside
Dimension |
Cavity
Length |
| ZNA |
A |
2.75" |
2.0" |
2.875" |
| ZNB |
B |
3.0" |
2.25" |
3.0" |
| ZN1 - Short |
1 |
Call |
Call |
Call |
| ZN1 - Long |
1 |
3.375" |
2.5" |
3.625" |
| ZN2 |
2 |
3.75" |
2.875" |
4.0" |
| ZN3 |
3 |
4.125" |
3.25" |
4.0" |
| ZN4 |
4 |
4.625" |
3.75" |
4.5" |
| ZN5 |
5 |
5.25" |
4.25" |
5.0" |
| ZN6 |
6 |
5.625" |
4.625" |
5.5" |
| ZN7 |
7 |
6.0" |
5.0" |
6.0" |
| ZN8 |
8 |
6.625" |
5.5" |
5.5" |
| ZN9 |
9 |
7.125: |
6.0" |
6.75" |
| ZN10 |
10 |
7.75" |
6.5" |
7.0" |
| ZN11 |
11 |
8.25" |
7.0" |
8.25" |
| ZN11 - S |
11 |
8.25" |
7.0" |
9.5" |
| ZN12 |
12 |
8.75" |
7.5" |
9.0" |
| ZN13 |
13 |
11.0" |
8.75" |
9.5" |
| ZN14 |
14 |
11.5" |
9.5: |
9.5: |
| ZN15 |
15 |
12.75" |
10.75" |
10.5" |
| ZN17 |
17 |
14.0" |
12.0" |
11.0" |
| ZN18 |
18 |
16.25" |
13.5" |
9.75" |
| Larger Zinc Nuts available as special order |
Technical Specifications:
Casting Process: Green Sand Mold
Metal: Special High Grade Zinc
Sizes: Standard sizes (A, B - 18) usually available. Custom sizes to special order
Please do not hesitate to use the Contact Us page to make an inquiry, or ask any specific questions you may have regarding your casting needs.
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