304 Stainless Steel Marine-Grade Counter Back Flap Hinges Polished 304 stainless steel counter/back-flap hinge (135 mm) — corrosion-resistant, heavy-duty hinge ideal for boats, yachts, containers, vans and caravans Product Description Marine-grade 304 stainless steel construction delivers excellent corrosion resistance and long service life in saltwater and outdoor environments. we also can use 316 stainless steel based OEM demands. Polished finish for a clean, premium look that resists staining and is easy to clean — ideal for visible installations on yacht cabins, hatches and locker doors. Compact, heavy-duty design (27 × 58 × 135 mm) with reinforced mounting geometry for reliable load-bearing performance on doors, flaps and counters. Integrated counter/back flap profile enables tidy, low-profile mounting on boat cabins, container doors, service vans and caravan lockers. Precision dimensions and balanced weight (approx. 178 g) make the hinge suitable for repeated opening cycles and vibration-prone marine or mobile environments. Versatile mounting (door-mount style) — works with timber, composite, GRP and metal panels when paired with appropriate fasteners and sealants. Custom material option available (upgrade to 316 stainless on request) for ultra-corrosive environments or premium OEM orders. Parameter chart Model Size A B C D E F G H WT SMHH406 -135 27*58* 135mm 135 mm 58 mm 27 mm 44.5 mm 60 mm 8.2 mm 8 mm 4 mm 178g Application Boat & yacht hatch and locker doors (galley lids, cockpit lockers). Containers, vans & caravans — secure flap doors and service panels. Commercial & industrial cabinets, access panels and drop-down counters requiring a corrosion-resistant hinge. FAQ Q1: Is 304 stainless suitable for marine use?A: Yes — 304 stainless is corrosion-resistant for most marine and outdoor applications; upgrade to 316 if operating in very aggressive saltwater or industrial environments. Q2: What panels does this hinge fit?A: Designed for door-mount installation on timber, GRP, metal and composite panels; choose fastener type and length to match panel thickness. Q3: Can this hinge be used for heavy doors?A: It is a heavy-duty flap hinge for moderate loads (lockers, hatches, service flaps). For very heavy doors, use multiple hinges or a larger heavy-duty hinge set. Q4: How should I maintain the hinge?A: Rinse with fresh water after salt exposure, check and replace fasteners if corroded, and periodically lubricate pivot points with marine-grade lubricant.
