Plain Steel T-Nuts
What are plain steel T-nuts? Plain steel T-nuts, also called tee nuts, are flanged nuts with prongs or a barrel that embed into wood or soft material to create a strong, flush metal thread. Made from unplated steel, they are the economical choice for load-bearing threaded inserts in dry, interior woodwork and furniture.
Diameter - Thread Pitch:
How do T-nuts work in wood?
A T-nut is pressed or hammered into a drilled hole from one side so its flange sits flush and its prongs or barrel grip the material, giving a durable machine thread that bolts can be driven into and removed repeatedly without stripping the wood. This makes them a staple in knock-down furniture, jigs, climbing holds, and speaker cabinets. Plain steel is the economical option for dry, interior use where corrosion is not a concern; for damp or outdoor work, choose a zinc plated or stainless T-nut. Prong (three or four prong) styles grip on insertion, while T-nuts without prongs rely on the barrel.
Why choose plain steel T-nuts
- Strong reusable thread: durable machine thread in wood and soft material.
- Flush flange: sits level with the surface for a clean fit.
- Economical: unplated steel for dry, interior use.
- Prong grip: prongs bite the material to resist spinning and pull-out.
Common applications for plain steel T-nuts
- Knock-down and flat-pack furniture
- Jigs, fixtures, and workbenches
- Climbing holds and speaker cabinets
- Interior woodwork needing a bolt-in thread
For damp or outdoor use, see zinc plated or 304 stainless T-nuts, and browse every material on the main T-nuts category.
Plain Steel T-Nuts FAQ
How do I install a T-nut?
Drill the specified hole, then press or hammer the T-nut in from one side so the flange sits flush and the prongs or barrel grip the material. Drive the bolt in from the other side.
Are plain steel T-nuts good outdoors?
No. Unplated steel can rust in damp conditions. For outdoor or wet use, choose a zinc plated or stainless T-nut.
What is the difference between pronged and pronged-less T-nuts?
Pronged T-nuts have three or four prongs that bite the surface to resist spinning and pull-out. Pronged-less styles rely on the barrel and are often used where prongs would show.