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Hanger Bolt

hanger bolt is a headless fastener with two distinct threaded ends:

Wood thread (lag thread) end – Coarse, deep threads for secure anchoring in wood, plywood, or particleboard.

Machine thread (bolt thread) end – Fine, standardized threads (metric or imperial) to accept nuts or mate with threaded metal components.

Hanger bolts are commonly used in wood-to-metal connections, offering a strong, concealed fastening solution.

    Standards

    Hanger bolts are manufactured under various international standards, including:

    ANSI/ASME B18.12 (U.S. standard for hanger bolts)
    DIN 693 (German/EU standard)
    ISO 1478 (International thread standards for wood screws)

    Materials

    Material

    Properties

    Common Uses

    Carbon Steel

    Economical, strong

    Indoor furniture, general construction

    Stainless Steel (304/316)

    Corrosion-resistant

    Outdoor, marine, or high-moisture environments

    Zinc-Plated Steel

    Moderate rust resistance

    Indoor/light outdoor use

    Brass

    Decorative, corrosion-resistant

    Architectural & aesthetic applications

    Applications of Hanger Bolts

    Hanger bolts are versatile fasteners widely used in industries requiring secure wood-to-metal connections. Their unique dual-thread design makes them ideal for:

    1.Furniture Manufacturing & Assembly
    Table/Chair Construction: Securing wooden legs to metal frames or plates
    Cabinet Hardware: Mounting hinges, handles, and brackets to wooden surfaces
    Modular Furniture: Connecting prefabricated wood and metal components

    2. Construction & Carpentry
    Structural Brackets: Attaching wooden beams to steel supports
    Deck Building: Fastening railings and posts to metal anchors
    Staircase Assembly: Joining wooden treads to metal stringers

    3. Industrial & Machinery
    Equipment Mounting: Installing machines with wooden bases to metal floors
    Tool Stands: Securing wood benches to metal frames
    Conveyor Systems: Fastening wooden guides to metal structures

    4. Hanging & Suspension Systems
    Swing Sets: Connecting chains/ropes to wooden beams
    Heavy Shelving: Mounting brackets to wooden studs
    Retail Displays: Hanging signs from wooden ceilings

    5. Automotive & Marine
    Vehicle Interiors: Attaching wood trim to metal frames
    Boat Carpentry: Securing wooden panels to aluminum hulls

    6. DIY & Home Improvement
    Garage Storage: Hanging tools/organizers on wooden walls
    Playground Equipment: Assembling jungle gyms and climbing structures

    Advantages of Hanger Bolts

    Hanger bolts offer unique advantages that make them indispensable for wood-to-metal fastening in construction, furniture, and industrial applications. Here’s why they stand out:

    1. Dual-Function Design
    ✅ Wood Thread End:
    Self-tapping coarse threads bite deeply into wood, providing superior pull-out resistance compared to screws or nails.
    Eliminates the need for pre-threaded holes (though pilot holes are recommended for hardwoods).
    ✅ Machine Thread End:
    Compatible with nuts, washers, or tapped metal parts, enabling adjustable tension and disassembly.
    Allows use of locknuts (e.g., Nyloc) to prevent loosening from vibrations.

    2. Strong & Reliable Connection
    ✔ Higher Load Capacity: The wood thread distributes stress over a larger area than standard screws, reducing wood splitting.
    ✔ No Weak Points: Headless design avoids stress concentration at the head (unlike traditional bolts).
    ✔ Vibration Resistance: Machine thread end secures tightly with a nut, ideal for dynamic loads (e.g., machinery, playground equipment).

    3. Versatility Across Materials
    Works with wood, plywood, MDF, particleboard, and metal.
    Compatible with stainless steel, zinc-plated, or brass hardware for corrosion resistance.

    4. Concealed & Aesthetic Fastening
    ✔ No Visible Head: Creates a clean, professional look in furniture and cabinetry.
    ✔ Flush Installation: Sits entirely within materials (unlike bulky hex-head bolts).

    5. Easy Installation Options
    Wrench/Grip Method: Rotate the smooth midsection with pliers or a wrench.
    Double-Nut Technique: Thread two nuts onto the machine end and tighten to drive the wood thread in.
    Specialty Drivers: Hex or square-drive variants available for power tools.

    6. Cost & Time Efficiency
    Faster than alternatives (e.g., drilling+tapping separate holes for bolts).
    Eliminates extra hardware (no need for separate screws and nuts).

    Materials

    Product Name

    Hanger Bolt

    Material

    carbon steel,Zinc-Plated Steel ,stainless steel,brass,

    Size

    Metric Sizes:M4 – M12

    Imperial Sizes:#8 – 1/2"

    Common Sizes:

    Metric: M6x30mm, M8x40mm, M10x50mm

    Imperial: 1/4"-20 x 1.5", 5/16"-18 x 2"

    Surface

    Plain, black,zinc plated,Hot Dip Galvanized,passivated,Chrome/Nickel Plating

    Production Process

    Forging

    Threads

    Metric Coarse/Fine & Imperial UNC, UNF

    MOQ

    800KG

    Package

    Carton & Pallet

    Product Services

    1.After-sales quality control: After finished product inspection, ensure that it meets customer requirements.

    2.Cooperation services: We can provide customers with OEM and ODM services to customize products to ensure that customer requirements are met.

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