| Grade | 4.8, 8.8 |
| Surface Treatment | ZP, YZP, PL |
Product Introduction
Standard Name: Hanger Bolt (Furniture Bolt).
Common Names: Double-Ended Stud, Furniture Screw, Woodworking Bolt.
Product Definition: A specialized rod-shaped fastener with threads at both ends and no threading in the middle. One end features a pointed wood screw thread (for screwing into wood), while the other end has a machine thread (for installing nuts or connecting metal parts). It is used to achieve a strong, removable connection between wood and metal components.
Hanger Bolt Key Features
Double-ended thread design: One end features a coarse wood screw thread (lag thread) for self-tapping
into wood; the other end has a fine machine thread for securing metal or other components with a nut.
Headless structure: A smooth shaft or transition section in the middle, without a traditional head,
facilitates insertion into wood and tightening from the other end.
Material and coating: Commonly made of carbon steel with zinc plating (ZP), yellow zinc plating (YZP),
or stainless steel (SS), offering different levels of corrosion resistance.
Diverse specifications: Diameters M6-M20 (or 1/4"-1/2"), lengths 50-200mm, with a longer wood screw
thread end.
Advantages: Connects wood to metal, easy installation, removable, economical and practical, commonly
used in furniture and hanging applications.
Working Principle
Wood end installation: The coarse wood screw thread end is screwed into the wood after pre-drilling a
pilot hole, creating a secure grip through self-tapping.
Machine end fastening: The machine thread end is exposed, and tightened with a nut, washer, or
connector, generating axial clamping force.
Load transfer: The smooth shaft distributes stress, the wood end grips the wood, and the machine end
tightens the components.
Fixing and removal: Can be adjusted or removed via the nut on the machine end; the principle involves
self-tapping interlocking and thread friction.
Product Applications
Furniture manufacturing: Securing table legs, chair legs, or cabinet legs to wooden frames, with the
machine end and nut concealed.
Solar panel installation: The wood screw thread end is fixed to a wooden beam, and the machine end
connects to the solar panel bracket.
Hanging systems: Installing pendant lights, ceiling fans, or pipe hangers to wooden ceilings.
Woodworking and DIY: Assembling wooden furniture or projects, connecting wood to metal fittings.
Construction assistance: Fixing wooden beams to metal brackets or decorative elements.
