Identify Sea-Dog Bimini Deck Hinges: Stainless vs Nylon
A Bimini deck hinge attaches the folding frame to a boat's mounting surface. Sea-Dog offers stainless 90-degree hinges and nylon fittings, including a 10-degree angled version for sloping surfaces. Choose by hinge-base shape, pivot-pin diameter and mounting location rather than finish alone.
Choose the matching design
Stainless 90-degree hinges
270200-1 is a standard 316 stainless 90-degree deck hinge. The 270210-1 shares the same listed base size but uses a removable pivot pin. Both have 1/4-inch pins.
Black nylon deck hinges
273200-1 is a large nylon deck hinge with a straight base. 273230-1 is an angled 10-degree version for inclined mounting surfaces. Both use 3/16-inch pivot pins.
Compare manufacturer part numbers
| Sea-Dog MPN | Construction | Hinge style | Base size | Pivot |
|---|---|---|---|---|
| 270200-1 | 316 stainless | 90° base | 3/4 × 2¼ in | 1/4 in pin |
| 270210-1 | 316 stainless | 90° removable-pin | 3/4 × 2¼ in | 1/4 in pin |
| 273200-1 | Black nylon | Standard top mount | 13/16 × 2 7/16 in | 3/16 in pin |
| 273230-1 | Black nylon | 10° angled top mount | 7/8 × 2 7/16 in | 3/16 in pin |
Stainless and nylon deck hinges have different pin sizes in these models: 1/4 inch versus 3/16 inch. Confirm eye-end and base compatibility before replacement.
How to check the original part
- Identify whether the mounting surface is flat or angled; the 273230-1 is a 10-degree base.
- Measure the existing base footprint and screw-hole positions.
- Check the pin diameter and whether a removable-pin version is needed.
- Inspect the substrate and old fasteners for looseness, corrosion or water damage.
- Use the appropriate marine mounting and sealing method; individual listings may not include deck fasteners. UsedRVParts viewing and pickup are by appointment.
Identify the exact Sea-Dog part
Check the individual listing for its condition, photographs and included parts.
Related parts reference
Continue with Sea-Dog Bimini top caps and internal tube inserts when the associated component also needs attention.
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