KK Fasteners is a trusted manufacturer of T-Slot Nuts, designed to meet a wide range of industry standards, including DIN, ASTM, ISO, and BS. Our T-Slot Nuts are engineered for precision and durability, making them ideal for applications in various machining and assembly operations. We adhere to international standards, ensuring compatibility and reliability across global markets. Choose KK Fasteners for high-quality, standard-compliant T-Slot Nuts tailored to meet your exact needs.



T-Slot Nuts are indispensable components in machining, assembly, and various industrial applications, ensuring secure and stable connections. At KK Fasteners, we specialize in manufacturing T-Slot Nuts that meet global standards for quality and precision. Our products are engineered for strength and reliability, making them suitable for a wide range of industries. From heavy machinery to intricate assemblies, our T-Slot Nuts deliver dependable performance every time.
With a commitment to excellence, KK Fasteners provides custom solutions to meet your unique requirements. We offer a variety of T-Slot Nuts designed to fit specific applications, ensuring that your operations run efficiently and effectively. Our expert team is ready to assist you in finding the right fastening solutions. Reach out to us today at inquiry@kkfasteners.com and discover how we can help optimize your projects with our high-quality products.
| Parameter | Specification / Range |
|---|---|
| Material Variants | Carbon Steel, Alloy Steel, Stainless Steel 304, Stainless Steel 316, Mild Steel |
| Grade Options | Grade 4.8, Grade 8.8, Grade 10.9 (Carbon/Alloy Steel); A2-50, A2-70, A4-70 (Stainless Steel) |
| Thread Type | Metric (M5 to M36), UNC (1/4" to 1-1/4"), UNF (available on request) |
| Slot Width Range | 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm (custom widths available) |
| Height (T-profile) | 3.5mm to 12mm depending on slot width and standard |
| Applicable Standards | DIN 508, ISO 299, JIS B 1167, ASME B18.29.1 (T-slot nuts) |
| Type Variants | Standard T-slot nut, Sliding T-nut, Drop-in T-nut, Long T-slot nut (extended length), Spring-loaded T-nut |
| Surface Finish | Plain (self-color), Black oxide, Zinc-plated, Hot-dip galvanized, Passivated (SS grades), Dacromet, Geomet |
| Hardness (Steel) | Grade 8.8: 245–310 HV; Grade 10.9: 320–380 HV |
| Tensile Strength | Grade 8.8: 800 MPa min; Grade 10.9: 1040 MPa min; A4-70: 700 MPa min |
| Tolerance Class | 6H (thread), h6/h8 (body width) per DIN 508 |
| Certifications | ISO 9001:2015; Material Test Reports (EN 10204 3.1/3.2); RoHS compliant finishes available |
| Size | s1 (mm) | t1 (mm) | a1 (mm) | h1 (mm) |
|---|---|---|---|---|
| M4 | 5 | 10 - 11 | 3.5 - 4.5 | 8 - 10 |
| M5 | 6 | 11 - 12.5 | 5 - 6 | 11 - 13 |
| M6 | 8 | 14.5 - 16 | 7 - 8 | 15 - 18 |
| M8 | 10 | 16 - 18 | 7 - 8 | 17 - 21 |
| M10 | 12 | 19 - 21 | 8 -9 | 20 - 25 |
| M12 | 14 | 23 - 25 | 9 - 11 | 23 - 28 |
| M16 | 18 | 30 - 32 | 12 - 14 | 30 - 36 |
T-slot nuts are used wherever a fastener must be repositioned along a linear channel without machining a new hole — making them foundational hardware in machine tooling, modular structures, and industrial automation. They appear across sectors wherever aluminum extrusion profiles, machine table beds, or fixture rails are specified.
Carbon Steel (Gr. 8.8 / 10.9)
The standard choice for indoor machine tool and automation applications where corrosion exposure is controlled. Grade 8.8 handles most general-purpose clamping; Grade 10.9 is specified when peak torque and clamping force requirements are higher — such as vibration-intensive milling operations. Zinc-plated or black oxide finish adds moderate corrosion protection for dry environments.
Stainless Steel 304 (A2-70)
Suitable for mildly corrosive and washdown environments. Offers good resistance to oxidation and mild chemical exposure, with tensile strength to 700 MPa. Specified for food-grade conveyor structures, pharmaceutical clean-room framing, and outdoor architectural applications where salt spray exposure is occasional rather than continuous.
Stainless Steel 316 (A4-70)
The correct choice for marine environments, offshore structures, chemical processing, and any application involving prolonged chloride exposure. The addition of 2–3% molybdenum over SS 304 significantly improves pitting resistance in salt-laden or acidic conditions. Specified with passivated finish for maximum surface corrosion resistance.

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T-slot nuts are fastening hardware with a rectangular or T-shaped cross-section that slides within the machined T-channel of machine tables, aluminum extrusion profiles, or structural rail systems. They accept a mating bolt through their threaded bore and, when tightened, clamp components in position at any point along the channel — without requiring a pre-drilled hole location.
The best material depends on the working environment. Stainless steel (SS 304 and SS 316) is preferred for corrosion resistance in outdoor or chemical environments, while carbon steel grades like 8.8 and 10.9 are used where higher strength and load-bearing capacity are required in industrial applications.
T-Slot Nuts are commonly manufactured in compliance with DIN 508, DIN 787, and ISO standards. These standards define precise dimensional tolerances, thread compatibility, and mechanical strength to ensure proper fit with machine tables and aluminum profile systems.
<p>T-Slot Nuts come in various sizes and profiles to fit different T-slot tracks. It's crucial to select the appropriate nut size and type that matches the specific dimensions of the T-slot track being used in your project.</p>
election depends on slot width, thread size, load requirements, and environmental exposure. For corrosion-prone environments, stainless steel is recommended, while high-load industrial setups typically require alloy or high-strength carbon steel variants.
A reliable supplier should offer material traceability, ISO-certified production, and compliance with DIN/ISO standards. KK Fasteners supplies precision-engineered T-Slot Nuts to global buyers with consistent quality control and export documentation support across multiple industries
<p>The load capacity of T-Slot Nuts varies based on their size, material, and design. It's essential to check the product specifications provided by the manufacturer to determine the specific load-bearing capacity of the T-Slot Nuts you intend to use.</p>
Precision fastening components require consistency, compliance, and dependable supply. KK Fasteners delivers T-Slot Nuts with verified material quality, tight tolerances, and global shipping support tailored for industrial buyers. For technical assistance, custom specifications, or bulk pricing, connect with the engineering team to request a detailed quotation or product specification sheet.