Product Summary

लोंगज़े 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 लोंगज़े 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.

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• ✔ Flush Internal Threading: Provides a clean, threaded metal socket in soft or hard woods where standard screws might strip or fail to hold.

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• ✔ 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.

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• Self-Locking Jaws – The four sharpened prongs are angled to lock deeper into the wood grain as the mating bolt is tightened.

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• Precision Metric & Imperial Threads – Available in Metric (DIN 1624) और Imperial (ASME) sizes to match international furniture hardware standards.

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• संक्षारण प्रतिरोध – 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

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• Metric Size Range: M3 to M12

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• Inch Size Range: #6-32 to 1/2"-13 (UNC / UNF)

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• Material: Low Carbon Steel (Q195 / Q235), Stainless Steel (SS304)

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• Hardness: Standard soft steel for easy prong penetration

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• Finish: Zinc Plated (Clear/Blue/Yellow), Black Oxide, Plain

Material & Mechanical Properties

• Quality of the steel and durability.

• सामग्री	श्रेणी	Feature	आवेदन
  कार्बन स्टील	Q235 / Q195	High Ductility	Standard Furniture / Plywood
  अलॉय स्टील	Grade 8	High Strength	Heavy-Duty Equipment Mounts
  स्टेनलेस स्टील	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	एम12	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