Longze Four-Pronged Tee Nuts | DIN 1624 / ASME B18.6.9 | Zinc Plated T-Nuts for Wood | Four-Jaw Furniture Nuts
lisa@lzfasteners.com
Product Title
Longze Four-Pronged Tee Nuts | DIN 1624 / ASME B18.6.9 | Zinc Plated T-Nuts for Wood | Four-Jaw Furniture Nuts
Product Summary
Dài Four-Pronged Tee Nuts (also known as T-Nuts or Four-Jaw Furniture Nuts) are specialized internal-thread fasteners manufactured to DIN 1624 standards, widely used in knock-down furniture, cabinetry,
rock climbing walls, and speaker cabinet assembly. Featuring a flat flange with four sharp prongs (jaws), these Dài Four-Pronged Tee Nuts are driven into a pre-drilled hole in wood or composite materials,
where the prongs "bite" into the surface to prevent the nut from turning during bolt installation.
-
✔ Anti-Rotation Security: The four-jaw design provides exceptional mechanical grip, ensuring the nut remains stationary even when high-torque bolts are tightened into it.
-
✔ Flush Internal Threading: Provides a clean, threaded metal socket in soft or hard woods where standard screws might strip or fail to hold.
-
✔ High-Speed Assembly: Ideal for automated furniture production lines and DIY flat-pack assembly, offering a permanent and reusable threading solution.
Key Features of Four-Pronged Tee Nuts
-
Robust Flange Base – Distributes the clamping load over a wide area, preventing the nut from pulling through the timber under heavy tension.
-
Self-Locking Jaws – The four sharpened prongs are angled to lock deeper into the wood grain as the mating bolt is tightened.
-
Precision Metric & Imperial Threads – Available in Metric (DIN 1624) Và Imperial (ASME) sizes to match international furniture hardware standards.
-
Chống ăn mòn – Finished with high-quality Blue/White Zinc Plating to prevent rusting in indoor and semi-protected environments.
Technical Specifications
-
Standards: DIN 1624 / ASME B18.6.9 / Custom Industrial Specs
-
Metric Size Range: M3 to M12
-
Inch Size Range: #6-32 to 1/2"-13 (UNC / UNF)
-
Material: Low Carbon Steel (Q195 / Q235), Stainless Steel (SS304)
-
Hardness: Standard soft steel for easy prong penetration
-
Finish: Zinc Plated (Clear/Blue/Yellow), Black Oxide, Plain
Material & Mechanical Properties
- Quality of the steel and durability.
-
Vật liệu Cấp Feature Ứng dụng Thép Cacbon Q235 / Q195 High Ductility Standard Furniture / Plywood Thép hợp kim Grade 8 High Strength Heavy-Duty Equipment Mounts Thép không gỉ SS304 (A2) Rust Proof Outdoor Furniture / Marine
Dimensions & Global Size Conversion
- Technical Standard: Longze provides high-precision T-Nuts manufactured to DIN 1624 and ASME B18.6.9 standards. These "blind" fasteners feature a long, internally threaded barrel with a flat flange and four sharp prongs (claws) designed to bite into wood, providing a strong, flush-mounted steel thread for furniture assembly and rock-climbing wall construction.
-
American Size (# Gauge/Inch) Nearest Metric Size (M) Barrel Outer Dia. (mm/inch) Flange Diameter (dk) (mm/inch) Barrel Height (L) (mm/inch) #6 - 32 M3.5 5.0 mm / 0.197" 15.0 mm / 0.591" 7.0 mm / 0.276" #8 - 32 M4 5.5 mm / 0.217" 15.0 mm / 0.591" 8.0 mm / 0.315" #10 - 24 M5 6.5 mm / 0.256" 17.0 mm / 0.669" 8.5 mm / 0.335" 1/4" - 20 M6 7.5 mm / 0.295" 19.0 mm / 0.748" 9.0 mm / 0.354" 5/16" - 18 M8 9.5 mm / 0.374" 22.0 mm / 0.866" 11.0 mm / 0.433" 3/8" - 16 M10 12.0 mm / 0.472" 25.0 mm / 0.984" 12.0 mm / 0.472" 1/2" - 13 M12 14.5 mm / 0.571" 27.0 mm / 1.063" 15.0 mm / 0.591"
Installation & Pre-Drilling Guide
- Helping the end-user avoid wood splitting.
-
Thread Size Recommended Drill Hole (∅) Min. Hole Depth Min. Board Thickness M5 6.5 mm - 7.0 mm 9.0 mm 10 mm M6 7.5 mm - 8.0 mm 10.0 mm 12 mm M8 9.5 mm - 10.0 mm 12.0 mm 15 mm M10 11.5 mm - 12.0 mm 13.0 mm 18 mm
Ứng dụng của Four-Pronged Tee Nuts
-
Furniture Manufacturing: Creating strong connection points for table legs, sofa feet, and bed frames.
-
Climbing Gyms: The industry standard for securing climbing holds to plywood panels on bouldering walls.
-
Audio Equipment: Mounting subwoofers and drivers into heavy MDF speaker enclosures.
-
Automotive/RV: Fastening interior cabinetry and panels to wooden sub-floors in campers and vans.
-
Industrial Pallets: Securing heavy machinery to wooden shipping bases.
Installation & Usage Guidelines
-
Pre-Drilling: Drill a hole slightly larger than the outside diameter of the T-nut barrel. If the hole is too small, the wood may split; if too large, the barrel won't sit snugly.
-
Seating the Nut: Use a hammer to tap the T-nut until the prongs are fully seated and the flange is flush with the wood surface. For large batches, use a pneumatic T-nut insertion machine.
-
Bolt Length: Ensure the bolt is long enough to engage the full depth of the T-nut threads but not so long that it bottoms out against the material behind the nut.
-
Avoid Over-Tightening: In soft woods like pine, over-tightening can cause the prongs to strip the wood fibers, leading to the nut spinning freely.
Quality Control & Logistics
-
ISO 9001 Certified production with rigorous checks on thread pitch and prong alignment.
-
Hardness Testing: Ensuring the prongs are ductile enough to bend into the wood without snapping, yet strong enough to resist rotation.
-
Salt Spray Testing: Verification of zinc plating thickness for long-term storage and use.
-
Packaging:
-
-
Bulk 25kg Export Cartons
-
Fumigation-Free Pallets
-
Custom small-box retail packaging (100, 500, 1000 pcs) available
-
Q: Can I use T-Nuts in hardwood like Oak or Maple? A: Yes, but you must be careful. Hardwoods are prone to splitting. We recommend a slightly larger pilot hole and using a C-clamp to press the T-nut into the wood rather than a hammer.
Q: What happens if the T-nut starts spinning? A: This usually means the wood fibers have stripped. You may need to move the hole slightly or use an epoxy adhesive to reset the nut in place.
Get a Fast Quote & Technical Support Looking for a reliable Four-Pronged Tee Nuts supplier? Send us your specifications (size, material, quantity) →
-
✔ Free technical recommendation
-
✔ Factory direct pricing
-
✔ Reply within 12 hours
ốc vít kim loại
chốt kim loại
ốc vít hệ mét
chốt trụ trụ mới
chốt tấm
ốc vít bằng thép không gỉ
ốc vít bằng thép không gỉ
Vietnamese 
English 
Afrikaans 
Arabic 
Bengali 
Bulgarian 
French 
German 
Hindi 
Indonesian 
Italian 
Japanese 
Korean 
Malay 
Portuguese 
Russian 
Spanish 
Thai 
Turkish 
Urdu 
