Fasteners
Nuts
Hillman
$3-$12 per packT-Nuts: Threaded Inserts for Removable Wood Connections
T-nuts are pronged barrel-shaped threaded inserts that press into wood to create permanent machine-thread receptacles. The prongs grip the wood while internal threads accept standard machine bolts for strong, removable connections.
Key Features
- Creates permanent machine-thread in wood
- Pronged barrel prevents spinning
- Allows removable bolted connections
- Standard machine thread sizes
- Drives flush from one side
Specifications
Material: Zinc-plated steel | Threads: 10-24
10-32
1/4-20
5/16-18
3/8-16 | Prongs: 3 or 4 | Barrel: 5/16in to 7/16in | Packs: 10-100
Best For
Knockdown furniture
Climbing wall holds
Workbench jigs and fixtures
Adjustable table legs
Compatible Materials
Plywood
Hardwoods
Softwoods
MDF
Particleboard
Pros & Cons
Pros
- ✓ Creates reusable threaded connections
- ✓ Allows disassembly and reassembly
- ✓ Standard bolt sizes
- ✓ Simple installation
Cons
- ✗ Prongs can tear out in soft wood
- ✗ Not easily removable once set
- ✗ Require exact hole drilling
- ✗ Can spin without adhesive
Installation Tips
Drill hole matching barrel diameter. Insert from back side and hammer prongs in. Apply epoxy for permanent anti-spin installation.
Frequently Asked Questions
Drill barrel-diameter hole, insert from back (prongs facing wood), hammer flush. Epoxy for stronger hold.
T-nuts use standard machine threads. A 1/4-20 T-nut accepts a 1/4-20 bolt. Match thread size on packaging.