China MJ Thread Small Hexagon Thin Nuts Manufacturer, Supplier, Factory

The MJ Thread Small Hexagon Thin Nuts represent a high-precision solution for demanding applications where space constraints and fine thread engagement are critical. These nuts are engineered to deliver exceptional performance in environments requiring reliable, vibration-resistant fastening. For specialized applications requiring a flatter profile with fine pitch threads, consider our Hexagon Extra Flat Nuts With Fine Pitch Thread. In scenarios demanding a robust, washer-faced design for inch-series bolts, the Inch Hexagon Thick Nuts With Washer Faced offer superior load distribution. For critical sealing applications in high-integrity systems, our Hexagon Nut For Pressure Vessel Flange is the ideal choice. When operating under extreme pressure conditions, our range of High Pressure Hexagon Nuts provides the necessary strength and durability to maintain joint integrity.


The defining characteristic of the MJ Thread Small Hexagon Thin Nuts is their optimized low-profile design, which provides a reduced height compared to standard hex nuts. This makes them indispensable in assemblies with limited axial space. The MJ thread form, with its rounded root and controlled root radius on the external mating thread, offers significant advantages over standard metric threads. These include enhanced fatigue life, superior resistance to vibration loosening, and increased strength, making them a preferred choice in aerospace, automotive, and high-performance machinery. The small hexagon size allows for tooling access in confined spaces while the thin profile minimizes the overall weight of the assembly without compromising the clamping force. The manufacturing of MJ Thread Small Hexagon Thin Nuts adheres to the most stringent international standards, ensuring consistent quality, dimensional accuracy, and reliable performance in the most challenging operational environments.

Product Specifications

  • Thread Type: MJ Series (Metric J)
  • Standards: Compliant with AS8879, NASM 25027, and ISO 5855-1
  • Material: Alloy Steel, Stainless Steel (AISI 304, 316), and other high-strength alloys
  • Finish/Coating: Cadmium Plating, Zinc Nickel, Phosphate, or Passivation per customer requirements
  • Temperature Range: Performance maintained from -65°F to 450°F (-54°C to 232°C) depending on material and coating
  • Features: Vibration resistance, high fatigue strength, and a reduced height/low-profile design.
Nominal Size (MJ) Width Across Flats (mm) Width Across Corners (mm) Height (mm) Thread Pitch (mm) Approximate Weight per 1000 units (kg)
MJ3 5.50 6.35 1.60 0.50 0.15
MJ4 7.00 8.08 2.10 0.70 0.32
MJ5 8.00 9.24 2.40 0.80 0.48
MJ6 10.00 11.55 3.20 1.00 1.05
MJ8 13.00 15.01 4.00 1.25 2.25
MJ10 16.00 18.48 5.00 1.50 4.35

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