Hanger Bolts
Headless Fasteners with Machine Thread and Wood Screw Thread for Timber-to-Component Mounting
Hanger Bolts are headless double-ended fasteners with machine thread on one end and coarse wood screw thread on the other. The wood-thread end anchors into timber, while the exposed machine-thread end provides a connection point for nuts, brackets, mounting hardware or other threaded components.
Product Overview
Hanger Screws combine a fine machine-thread connection and a coarse wood-thread anchor in one straight, headless fastener. They are not Double End Studs, Dowel Screws or DIN 571 hex-head wood screws.
The pointed wood-thread end is installed into a suitable pilot hole in timber. The machine thread remains exposed for a bracket, fixture, nut or compatible female-threaded component, creating a removable wood-to-metal connection.
For quotation, specify machine-thread size and pitch, overall length, machine-thread and wood-thread lengths, direct midpoint transition, material, finish, application, quantity and drawing or sample.
Technical Specifications
Machine Thread, Wood Thread & Installation Depth Selection
Stainless Steel, Carbon Steel & Size Options
Thread Length & OEM Manufacturing
Machine diameter, pitch and length; wood-thread diameter and length; direct midpoint transition and overall length.
The headless bolt is driven using two locked jam nuts on the machine-thread half.
Customer drawing, sample, OEM production, material, finish and custom packaging.
Thread, Straightness & Installation Quality
Documentation may include MTC, raw-material, dimensional, thread, straightness and coating reports plus third-party inspection support. Representative timber installation testing is available where required; no universal torque, embedment or pull-out value is claimed.
Applications
Wood thread anchors into timber rafter while machine thread remains exposed for mounting hardware.
Removable machine-thread connections for furniture legs, frames and timber components.
Creates a threaded mounting point in timber for metal brackets and equipment.
For compatible clamps and light support hardware installed into timber.
Custom sizes, thread lengths, drive features and materials according to drawing.
Frequently Asked Questions
What is a Hanger Bolt?
A headless fastener with wood thread at one end and machine thread at the other.
What is the difference between a Hanger Bolt and a Double End Stud?
A Hanger Bolt combines wood and machine threads; a Double End Stud has machine threads at both ends.
How is a Hanger Bolt installed?
Use a suitable pilot hole and two locked jam nuts, or a specified dedicated drive feature.
Can Hanger Bolts be supplied in 304 or 316 Stainless Steel?
Yes. 304/A2 and 316/A4 are available according to application, along with carbon-steel options.
What dimensions are required for a custom Hanger Bolt?
Provide machine-thread size and pitch, overall length, both thread-zone lengths, wood-thread diameter, optional center, material, finish and quantity.
Related Products
Share required threads, lengths, center or drive feature, material, finish, application, drawing and quantity with VALTOR.