Safety, Quality, Functionality & Aesthetics in One Solution
The 4000 Series
Bomar 4000 Series Tread Plate Hatches are sure to provide a sleek look to any deck. Featuring a distinctive diamond plate (checker plate) aluminum lid or a smooth non-skid finish, this product line can be tailored for any OEM or boat builder. The convenient drop-in design, provides for an efficient, secure, and semi-flush installation, that could either be glazed in or attached with fasteners. Bomar 4000 and 4100 Series Hatches are rated for 5 PSI water resistance and is a must have, for all required dry areas. Our tread plate access hatches can be custom tailored to fit all your project needs, with custom finishes, textures, branding, and size options as well. Designed with safety, quality, functionality, and aesthetics in mind, we have a solution for all your project needs. With decades of marine product development knowledge, our line of hatches was designed to outperform and outlast all that is on the market today.
4000 Series Tread Plates
Standard Features
The 4000 Series tread plate access hatches by Bomar, featuring:
Download Product Sheet
Download Product Sheet
- Heavy Duty, Extruded Aluminum Construction
- Stainless Steel Frame Options
- Weld-In or Bolt-In Installation
- Clear Anodized Standard
- Built & Tested for Harsh Marine Environments
- 1/4 in Off Mounting Surface
- Diamond Plate (Checker Plate) Lid Design
- Best In Class Ergonomics & Space Savings
- D Shape Handles Standard
- Allen Drive Handle Available
- Quick Release Handle Available
4000 Series Tread Plates
Additional Options
4000 Series access hatch personalization options, for any application.
- Various Sizes to Accommodate Boat Builders & Enthusiasts
- Available in Square, Rectangle & Round Form Factors
- Styles: Lift Out, Hinged, J-Arm, Weathertight, or Cover
- Inside/Outside Opening
- Custom Logo Engraving
- Gas Assist Struts
- CE & ABYC Approvals
- Custom Powder Coating
- Bomar Spare Parts & Installation Accessories Readily Available
4000 Series Tread Plates
Key Materials
Quality construction, built to last at sea.
- Bomar uses 6061 extruded aluminum to construct our 4000 Series Tread Plate hatches. The extrusions are pressure formed at the Bomar manufacturing facility in New Hampshire.
- The 4000 Series Tread Plate hatches are professionally assembled in-house with 316L, marine grade, stainless steel T-handle & fasteners. Stainless steel is ideal for harsh marine environments due to it’s rust & corrosion resistance, strength and luster.
Bomar 4000 Series Tread Plate
Access Hatch Size Chart
| Part # | Hole Cut Out | Shape | PDF Drawing |
|---|---|---|---|
| N4010R | 10.63″ (270 mm) | Circle | DOWNLOAD |
| N40127 | 24 1/2″ x 16 1/2″ (622 mm x 419 mm) | Rectangle | DOWNLOAD |
| N40128 | 30 1/2″ x 24 1/2″ (774 mm x 622 mm) | Rectangle | DOWNLOAD |
| N40129 | 12 1/2″ x 12 1/2″ (317 mm x 317 mm) | Square | DOWNLOAD |
| N40131 | 30 1/2″ x 20 1/2″ (774 mm x 520 mm) | Rectangle | DOWNLOAD |
| N40132 | 24 1/2″ x 24 1/2″ (622 mm x 622 mm) | Square | DOWNLOAD |
| N40133 | 36 1/2″ x 24 1/2″ (927 mm x 622 mm) | Rectangle | DOWNLOAD |
4000 Series Tread Plates
Frequent Questions
- Bomar is the leading manufacturer of hatches & portlights for enthusiasts and builders since 1947. We truly stand behind our products and pride ourselves on our outstanding customer service. All Bomar hatches are backed by our 1 year warranty against any manufacturing defects.
- Only the individual hatch is included with purchase. Hardware, spare parts & accessories sold separately.
- Hatches are safely and neatly packaged for residential or commercial delivery. For large quantities, delivery to a commercial address is highly recommended.
- Yes, Bomar ships products worldwide across the globe. Shipping charges will be determined and billed separately once your order is ready to ship.
- Bomar offers replacement parts such as gaskets, dogs, handles, lenses & more for most hatches produced after 1999.
- Explore Spare Parts
- Customers may purchase these replacement items from an authorized dealer. Hatch lifespan will vary case by case depending on environment, use, and individual care.
4000 Series Tread Plates
Purchase Options
Purchase 4000 Series Tread Plate access hatches by Bomar.
Find A Dealer
Find A Dealer
Bomar, a division of Pompanette, LLC continues trustfully serving the worldwide marine community since 1947. We offer a variety of safe, secure, private and convenient purchasing options for OEM’s, dealers, distributors & end-users.