Versatile Hammer T Nut for Secure Fastening Solutions
High-quality T nuts (T-slot hammer nuts, drop-in tee nuts) in carbon steel & 304 stainless steel. Metric M3-M12 sizes fit 20/30/40 series aluminum profiles. Wholesale bulk supply, OEM & custom finishes for industrial frames, workbenches and automation equipment worldwide.
Product Overview :
T Nuts, also named tee nuts, T-slot nuts, hammer nuts or drop-in T nuts, are standard modular fasteners exclusively manufactured for aluminum extrusion T-slots. Our T-shaped sliding nuts slide freely along profile grooves and self-lock tightly when tightening bolts, eliminating secondary machining on aluminum frames.
These industrial sliding fasteners are highly favored by B2B buyers for flexible assembly, adjustable positioning and anti-loosening performance. We stock standard metric T nuts and support custom production to meet DIN 508, ISO and EU aluminum profile standards for global markets including North America, Europe, Australia and Southeast Asia.
Main T-Nut Types:
We supply two mainstream categories covering all assembly demands:
Ordinary Drop-in T Nuts
Free sliding inside T-slots; insertable at any position even after the whole frame is assembled. Ideal for fixed connections on workshop frames.
Spring Loaded T Nuts (Elastic T Nuts)
Built-in spring ball keeps the nut fixed in position without slipping during installation. Perfect for frequent disassembly and adjustment of automation equipment.
Optional shapes: square T nuts, diamond T nuts, boat-type hammer nuts matching 20, 30, 40, 45 series aluminum extrusions.
| Specification | Specification/D | Length/L | Thickness (T) | Width/S |
| 20 series | M3 | 10.3 | 5 | 6 |
| 20 series | M4 | 10.3 | 5 | 6 |
| 20 series | M5 | 10.3 | 5 | 6 |
| 30 series | M3 | 15.5 | 6.5 | 8 |
| 30 series | M4 | 15.5 | 6.5 | 8 |
| 30 series | M5 | 15.5 | 6.5 | 8 |
| 30 series | M6 | 15.5 | 6.5 | 8 |
| 40 series | M4 | 19.5 | 7.5-8 | 8 |
| 40 series | M5 | 19.5 | 7.5-8 | 8 |
| 40 series | M6 | 19.5 | 7.5-8 | 8 |
| 45 series | M4 | 19 | 8.5 | 10 |
| 45 series | M5 | 19 | 8.5 | 10 |
| 45 series | M6 | 19 | 8.5 | 10 |
| 45 series | M8 | 19 | 8.5 | 10 |
T Nut Material & Surface Treatment
Raw Material: Zinc-plated carbon steel (Grade 4.8 / 8.8), 304 & 316 stainless steel, alloy steel
Surface Finishes: Electro galvanized, black oxide, hot-dip galvanized, Dacromet coating
Thread Specs: Metric coarse thread M3, M4, M5, M6, M8, M10, M12; UNC imperial threads available on request
Strict thread tolerance ensures perfect matching with T-bolts and socket cap screws.
T Nut Core Advantages
Post-assembly Installation
No need to preload nuts before frame assembly. You can add components at any slot position, greatly cutting assembly time.
Automatic Anti-rotation Locking
The T-head clamps firmly against the slot wall once the bolt is tightened. No spinning under vibration, stable for long-term industrial use.
Wide Compatibility
Fully compatible with European standard aluminum extrusions, machine tool T-slots and workbench grooves.
Reusable Fastening
Can be loosened, repositioned and retightened repeatedly without losing thread accuracy.
Anti-corrosion Options
Stainless steel T nuts work reliably outdoors, in humid workshops and solar equipment frames.
T Nut Industry Applications:
Our T slot nuts serve multiple global manufacturing industries:
Aluminum Profile Framing Systems
Machine guards, assembly workbenches, production line racks, testing jigs and automation frames (biggest application scenario).
Equipment & Machinery
CNC machine tables, optical experimental platforms, conveyor belt brackets, cabinet enclosures.
Solar Energy Projects
PV mounting brackets, solar panel aluminum support frames for outdoor photovoltaic projects.
Exhibition & Warehouse Facilities
Trade show booth frames, warehouse storage racks, logistics partition frames.
Furniture & DIY Engineering
Industrial worktables, laboratory equipment supports, customized metal frame structures.
Why Choose Our T Nuts?
As a professional fastener manufacturer with a dedicated aluminum profile fitting workshop, we strictly control thread precision and dimensional consistency.
Ready stock for fast delivery to EU, UK, US and Southeast Asia
Third-party quality inspection for bulk orders
Custom non-standard T nuts for special T-slot structures
Competitive factory price for project bulk procurement
If you need matched T-bolts, flange nuts and sliding blocks together with T nuts, we can provide a one-stop aluminum profile fastener package. Contact us to get your free quotation right now.
FAQ Section:
Q1: Can T nuts be inserted after the aluminum frame is fully built?
A: Yes. Compatible with EU Standard 20/30/40 Series Profiles
Q2: What is the difference between spring T nuts and ordinary T nuts?
A: Spring T nuts stay fixed in the groove and will not slide down during part installation; ordinary T nuts move freely without positioning.
Q3: Do you supply stainless steel T nuts for outdoor projects?
A: We have 304 & 316 stainless steel T nuts with excellent rust resistance for outdoor solar and municipal projects.
