Surface Bolts

Surface Bolts for French, Double & Specialty Doors

Surface bolts are visible, surface-mounted door bolts used to hold a compatible door panel securely in position. They are often selected for French doors, paired entry doors, inactive door leaves, Dutch doors, and other applications where one section needs to remain closed while another operates. Because the bolt mounts to the face of the door rather than being recessed into the door edge, shoppers should compare its overall length, projection, mounting position, strike configuration, and finish before ordering.

Coastal Hardware Store carries surface bolts from Baldwin Estate, Deltana, and Emtek. The current collection includes compact decorative models, manufacturer-designated heavy-duty surface bolts, concealed-screw designs, extended offset bolts, and a Dutch door surface bolt. For hardware that is installed into the edge of the door and is less visible when the door is closed, compare our flush bolts. You can also browse door hardware accessories for coordinating components.

Why Choose Surface Bolts?

Surface bolts provide a straightforward way to hold an inactive door leaf or specialty panel in position while keeping the operating hardware visible and accessible. The correct model depends on the door configuration, mounting location, opening direction, strike position, and project requirements.

• Useful for paired doors: A surface bolt can hold the inactive leaf of a French or double-door opening closed while the active leaf continues to operate.
• Visible operation: Because the bolt is mounted on the face of the door, its position and operation can generally be seen and accessed without opening the door edge.
• Multiple configurations: The collection includes standard, offset, concealed-screw, Dutch door, and manufacturer-designated heavy-duty models.
• Choice of lengths: Compact and extended options allow shoppers to compare different mounting positions, operating heights, and door layouts.
• Finish coordination: Surface bolts are available in finishes that can coordinate with compatible hinges, handlesets, knobs, levers, deadbolts, and other visible hardware.
• Alternative to recessed hardware: A surface-mounted bolt may be appropriate when visible architectural hardware is preferred or when the door is not prepared for a concealed flush bolt.

Types of Surface Bolts Available

Standard Surface Bolts

Standard surface bolts mount to the face of the door and use a manually operated bolt that engages a compatible strike. They can be used on appropriate inactive door leaves, paired interior doors, entry-door systems, cabinets, or other applications identified by the manufacturer. Compare the bolt length, throw or projection, guide design, strike location, and included hardware for the selected model.

Heavy Duty Surface Bolts

The collection includes Deltana products identified by the manufacturer as heavy-duty surface bolts. These models are offered in multiple lengths for applications requiring a larger or more substantial surface-mounted assembly. “Heavy duty” is not a universal performance grade, load rating, or certification, so verify the manufacturer's specifications and the requirements of the opening rather than choosing by the product name alone.

Concealed-Screw Surface Bolts

Concealed-screw surface bolts hide the mounting fasteners for a cleaner finished appearance. The bolt assembly itself remains surface-mounted and visible; the term “concealed screw” should not be confused with a concealed or flush bolt installed within the door edge. The current collection includes Deltana concealed-screw models in several lengths, while Baldwin Estate surface bolts use a concealed guide design with fasteners that are not visible.

Offset Surface Bolts

Offset surface bolts use a different mounting geometry than a conventional straight surface bolt. The Deltana offset products represented in this collection are described for outward-opening doors. Because the relationship between the bolt, door face, frame, and strike is application-specific, review the product drawing and confirm the required offset before drilling or ordering.

Dutch Door Surface Bolts

A Dutch door surface bolt is designed for a door divided into upper and lower sections. The Emtek Dutch Door Surface Bolt allows the two sections of a compatible Dutch door to be secured together or operated according to the door configuration. Confirm the bolt location, strike arrangement, door overlap, and included components before installation.

How to Choose the Right Surface Bolt

Start with the door configuration and mounting location, then narrow the selection by bolt type, dimensions, strike arrangement, material, finish, and manufacturer requirements. A longer bolt is not automatically a stronger or more suitable bolt; the hardware must fit the geometry and intended operation of the opening.

• Identify the door application: Determine whether the bolt will be used on an inactive French-door leaf, paired entry doors, a Dutch door, an outward-opening door, or another supported application.
• Confirm the active and inactive panels: For paired doors, identify which leaf will normally operate and which leaf must be held in position.
• Measure the actual installation: Compare the product's overall length, projection or throw, guide placement, operating-knob position, and strike location with the door and frame.
• Select the correct mounting geometry: Standard, offset, and Dutch door bolts are not interchangeable. Confirm the opening direction, door-to-frame relationship, and any required clearance.
• Review the strike options: Current products may include universal, mortise, angle, or lip strikes, but the number and type supplied vary by model. Verify which strike fits the head jamb, floor, adjacent door section, or other receiving surface.
• Verify project requirements: Do not assume a surface bolt is approved for a fire-rated door, required egress opening, exterior exposure, or commercial application unless the manufacturer's documentation expressly supports that use.

Materials, Styles & Finishes

Many products in the current collection are listed as solid brass, including representative Emtek and Deltana surface bolts. Material composition should still be confirmed on the individual product page, especially when a specific base material is required. A finish name such as Brushed Stainless Steel describes the visible finish option and should not automatically be treated as confirmation of the product's underlying material.

Current finish choices include options shown as Antique Brass, Antique Nickel, Brushed Chrome, Brushed Nickel, Brushed Stainless Steel, Flat Black, Lifetime Polished Brass, Lifetime Satin Brass, Oil Rubbed Bronze, Paint Black, Polished Brass, Polished Chrome, Polished Nickel, PVD Polished Brass, Satin Black, Satin Brass, Satin Nickel, Unlacquered Brass, Venetian Bronze, and Vintage Brass. Availability varies by brand and product. Similar finish names from different manufacturers may not be exact visual matches, so coordinate hardware using the manufacturer's complete finish name and code whenever possible.

Some unlacquered, oxidized, or patinated finishes are intended to change in appearance with age, handling, and environmental exposure. Review the applicable care instructions and finish-warranty terms before selecting these finishes for an entry or frequently used door.

Featured Surface Bolt Brands

The current collection includes surface bolts from Baldwin Estate, Deltana, and Emtek. Each manufacturer uses its own dimensions, mounting system, strike package, finish names, and warranty terms.

• Baldwin Estate: The current assortment includes 3-inch and 4-inch Baldwin surface bolts. Baldwin describes these products as using a fully concealed guide design with mounting fasteners that are not visible.
• Deltana: Deltana provides the broadest range represented in this collection, including standard heavy-duty, concealed-screw, and offset surface bolts in compact and extended lengths. Representative product pages list solid-brass construction and multiple compatible strike styles.
• Emtek: The Emtek selection includes standard solid-brass surface bolts in several lengths along with a 4-inch Dutch door surface bolt. Included strikes and mounting hardware vary between the standard and Dutch door models.

Installation & Compatibility

Although these products are surface-mounted, installation requirements are not universal. Before drilling, compare the product drawing with the door, frame, adjacent leaf, head jamb, threshold, or floor where the strike will be installed. Confirm the bolt's length, throw, guide locations, screw spacing, operating clearance, and alignment with the selected strike.

For replacement projects, do not assume a new surface bolt will use the existing screw holes or cover the same footprint. Also check for interference from an astragal, weatherstripping, glass, decorative trim, hinges, handles, or other door hardware. The mounting surface must be suitable for the supplied fasteners and the intended use of the bolt.

Some paired-door systems use bolts at both the top and bottom of the inactive leaf, while other openings use a different arrangement. Follow the door manufacturer's instructions, architectural hardware schedule, or qualified installer's recommendation. Products used on fire-rated, egress, exterior, or specialty doors should be verified for that exact application before purchase or installation.

Shipping & Warranty Information

• Shipping: Fulfillment time varies by brand and product. Current surface bolt listings show estimated fulfillment windows of either 2-3 business days or 5-7 business days, depending on the item. Product-specific estimates should be reviewed before ordering. Orders of $100 or more qualify for free standard ground shipping within the contiguous 48 states and Washington, D.C. View Shipping Policy.
• Warranty: Warranty and finish coverage vary by manufacturer, product, finish, installation, and application. Review the individual product page and the manufacturer's current warranty before purchasing, particularly when the bolt will be exposed to weather or installed in a specialty opening.

Frequently Asked Questions About Surface Bolts

What is a surface bolt used for?

A surface bolt is a manually operated bolt mounted to the face of a door or compatible panel. It is commonly used to hold the inactive leaf of French or double doors in position while the active leaf operates. Certain models are also designed for Dutch doors, outward-opening doors, cabinets, windows, or other manufacturer-supported applications.

What is the difference between a surface bolt and a flush bolt?

A surface bolt is mounted on the face of the door and remains visible. A flush bolt is generally mortised into the edge or face of the door and is less visible when the door is closed. The two types require different door preparation, mounting hardware, and strike arrangements.

What length surface bolt should I choose?

Choose the length according to the mounting location, door geometry, operating height, required reach, and manufacturer's specifications. Door height alone is not enough to determine the correct size, and a longer surface bolt is not automatically stronger. Review the full product dimensions, projection, guide placement, and strike position.

Can surface bolts be used on French or double doors?

Yes, compatible surface bolts are commonly used to hold the inactive leaf of a French or paired-door opening closed. Confirm whether the opening requires hardware at the top, bottom, or both locations and verify that the selected bolt and strike fit the door, frame, and astragal arrangement.

Can surface bolts be used on exterior doors?

Some surface bolts are intended for entry-door or outward-opening applications, but exterior suitability is not uniform across this collection. Verify the manufacturer's intended application, base material, finish limitations, mounting instructions, and warranty before exposing a product to weather or coastal conditions.

Do I need surface bolts at both the top and bottom of the door?

That depends on the door system and project requirements. Some inactive door leaves use both top and bottom bolts, while other doors use one surface bolt or a different combination of hardware. Follow the door manufacturer's instructions or the project's hardware schedule rather than assuming one arrangement fits every opening.

Shop Surface Bolts at Coastal Hardware Store

Coastal Hardware Store offers surface bolts for French doors, paired entry doors, Dutch doors, outward-opening doors, and other compatible applications. Compare Baldwin Estate, Deltana, and Emtek products by length, mounting configuration, strike type, material, finish, and fulfillment time before selecting hardware for your project.

If you need help comparing standard, offset, concealed-screw, or Dutch door surface bolts, our team can help you review the available options and product-specific installation requirements. Contact us at support@coastalhardwarestore.com or call us at 561-808-2588.