Material
Stainless Steel
Type
Three-claw press-in nut
Size Range
M4–M12
Surface Finish
Plain / Passivated
Grade
Steel / A2 / A4
Standard
3-prong press-in
Packaging
Carton / Pallet
MOQ
1 piece (sample)
Precision Manufacturing, Batch After Batch
From cold-heading raw steel wire to heat-treated finished bolts, every step runs under strict in-house process control — ensuring the dimensional accuracy and strength grade printed on every head marking.
Product Overview
Application Scenarios
A three-prong T-nut is a threaded barrel with a flange carrying three sharp claws that press into wood, plywood or composite panels to give a flush, re-usable machine thread. As a bolt is tightened the prongs bite and stop the nut spinning, turning a drilled hole into a metal thread in material that cannot be tapped. They are a light-to-medium-duty, economical fixing for furniture, cabinets, plywood fixtures, speaker boxes, jigs and general panel work. Zinc-plated steel suits general indoor use; stainless versions suit damp and outdoor timber.
Installation Notes
Drill the barrel clearance hole through the panel and press or tap the T-nut in from the back until the flange sits flush and all three prongs are fully buried — a smear of glue in the hole adds pull-out strength in softwood, and counterboring the flange gives a fully flush back. Fit from the hidden face. Do not over-torque in thin or soft panels or the prongs can pull through; add a washer under the bolt head on the face side. For joints assembled and disassembled often, or carrying more load, use a four-prong (jaw) T-nut for extra grip.
Material & Certification
Formed from austenitic stainless steel — A2 (AISI 304) or A4 (AISI 316) — with a threaded barrel and three press-in prongs, with thread and prongs checked and every batch traceable to raw material certificates. Each lot passes dimensional inspection before packaging; EN 10204 3.1 material certificates are available on request.
T-Nut (3-Prong)
Stainless T-Nut · A2 / A4 · 304 / 316 · 3-Prong
Dimensional Specifications
Typical Reference Dimensions — click a size to locate it below
| Thread Size | Flange Dia F (mm) | Barrel B (mm) | Prong (mm) |
|---|---|---|---|
| M4 | 15 | 8 | 5 |
| M5 | 16 | 9 | 6 |
| M6 | 18 | 11 | 7 |
| M8 | 22 | 13 | 8 |
| M10 | 24 | 15 | 9 |
| M12 | 27 | 16 | 10 |
Typical reference dimensions — this part is not covered by a fixed DIN/ISO dimensional standard and is made to your drawing. Contact us with your panel thickness, grip, length or head requirement for an exact specification sheet.
Applications
Construction
Steel structures, bridges, buildings, concrete anchors
Machinery
Heavy equipment, industrial machines, manufacturing
Infrastructure
Railways, towers, pipelines, power transmission
Automotive
Vehicle assembly, chassis, engine components
Trusted By Global Buyers
Factory-direct T-nuts exported to construction, machinery and infrastructure buyers across Europe, Africa, Asia and the Americas.