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Hex Flange Nut
Hex Flange Nut is a standard fastener combining fixing function and pressure dispersion, widely used in scenarios requiring high-strength connection, protection of connected parts, or dispersion of preload. Its core structure consists of two parts:
- Hexagonal Head Body: A regular hexagonal design that fits various tightening tools (wrenches, sockets), ensuring convenient installation and high torque transmission efficiency;
- Circular Flange: A flat disk perpendicular to the nut axis, primarily used to increase the contact area with the connected part, disperse bolt preload, and avoid damaging thin-walled parts (e.g., metal plates, plastics) or soft materials.
Product Description
Hex Flange Nut is a standard fastener combining fixing function and pressure dispersion, widely used in scenarios requiring high-strength connection, protection of connected parts, or dispersion of preload.
Its core structure consists of two parts:
- Hexagonal Head Body: A regular hexagonal design that fits various tightening tools (wrenches, sockets), ensuring convenient installation and high torque transmission efficiency;
- Circular Flange: A flat disk perpendicular to the nut axis, primarily used to increase the contact area with the connected part, disperse bolt preload, and avoid damaging thin-walled parts (e.g., metal plates, plastics) or soft materials.
This product complies with national standard GB6177, with materials including carbon steel (Grade 4.8, 8.8, 10.9)and stainless steel (304, 316):
- Carbon steel grades correspond to different mechanical properties (e.g., Grade 4.8 has tensile strength ≥400MPa, Grade 10.9 ≥1000MPa), meeting needs from light to heavy loads;
- Stainless steel 304/316 offers excellent corrosion resistance (to acid, alkali, salt spray) and a smooth, dead-corner-free surface, complying with hygiene requirements in food and medical industries.
Its core structure consists of two parts:
- Hexagonal Head Body: A regular hexagonal design that fits various tightening tools (wrenches, sockets), ensuring convenient installation and high torque transmission efficiency;
- Circular Flange: A flat disk perpendicular to the nut axis, primarily used to increase the contact area with the connected part, disperse bolt preload, and avoid damaging thin-walled parts (e.g., metal plates, plastics) or soft materials.
This product complies with national standard GB6177, with materials including carbon steel (Grade 4.8, 8.8, 10.9)and stainless steel (304, 316):
- Carbon steel grades correspond to different mechanical properties (e.g., Grade 4.8 has tensile strength ≥400MPa, Grade 10.9 ≥1000MPa), meeting needs from light to heavy loads;
- Stainless steel 304/316 offers excellent corrosion resistance (to acid, alkali, salt spray) and a smooth, dead-corner-free surface, complying with hygiene requirements in food and medical industries.
Product Parameter
The following are common metric specifications (compliant with GB6177), with non-standard customization available (e.g., adjusting flange diameter, thickness):
Note: Specification is expressed as "Nominal Thread Diameter×Flange Diameter×Thickness" (e.g., M8×16×8 means nominal thread diameter 8mm, flange diameter 16mm, thickness 8mm); Across flats is the diagonal distance of the hexagonal head, a key parameter for wrench selection.
| Nominal Thread Diameter (M) | Pitch (mm) | Flange Diameter (mm) | Nut Thickness (mm) | Across Flats (mm) |
| M5 | 0.8 | 10 | 5 | 8 |
| M6 | 1.0 | 12 | 6 | 10 |
| M8 | 1.25 | 16 | 8 | 13 |
| M10 | 1.5 | 18 | 10 | 16 |
| M12 | 1.75 | 22 | 12 | 19 |
| M16 | 2.0 | 28 | 16 | 24 |
Note: Specification is expressed as "Nominal Thread Diameter×Flange Diameter×Thickness" (e.g., M8×16×8 means nominal thread diameter 8mm, flange diameter 16mm, thickness 8mm); Across flats is the diagonal distance of the hexagonal head, a key parameter for wrench selection.
Product Feature
1. Pressure Dispersion & Protection Function: The flange design disperses bolt preload over a larger area (2-3 times larger than ordinary nuts), effectively avoiding damage to thin-walled parts (e.g., home furniture plates, food machinery housings). Suitable for scenarios requiring high surface integrity of connected parts.
2. High Strength & Heavy-Duty Capacity: Carbon steel Grade 10.9 has tensile strength ≥1000MPa, capable of withstanding tensile and shear forces in heavy-duty environments (e.g., industrial building materials, machine tools), without deformation or fracture.
3. Corrosion Resistance & Hygiene Performance: Stainless steel 304/316 resists acid, alkali, and salt spray erosion, with a smooth, dead-corner-free surface that is easy to clean and disinfect. Complies with food-grade hygiene standards (GB 14930.1) and medical device requirements.
4. Easy Installation & Good Interchangeability: The hexagonal head fits multiple tools (wrenches, electric screwdrivers), ensuring high installation efficiency. Complies with GB6177 standard with high dimensional precision (error ≤0.1mm), compatible with same-specification bolts and washers for strong interchangeability.
5. Anti-Loosening & Stability: The increased friction between the flange and the connected part provides certain anti-loosening performance, suitable for vibration environments (e.g., vehicle & ship parts, fans), reducing the risk of nut loosening.
Application Fields
- Industrial Building Materials: Used for connections in steel structure buildings, scaffolding, and railway facilities. Withstands heavy loads and vibrations, with the flange dispersing pressure to avoid damaging steel plates.
- Mechanical Equipment: Used for fixing machine tools, automotive engines, pumps, and fans. High-strength carbon steel bears heavy loads, and the hexagonal head facilitates installation and maintenance.
- Home Decoration: Used for assembling furniture (e.g., sofas, wardrobes, bookshelves). The flange disperses pressure to avoid damaging plates, and stainless steel offers an aesthetically pleasing and corrosion-resistant finish.
- Medical Equipment: Used for fixing medical devices (e.g., operating tables, imaging equipment, rehabilitation devices). Stainless steel 304 complies with medical hygiene requirements, with no harmful substance leaching.
- Food Industry: Used for assembling food processing machinery (e.g., packaging machines, conveyor lines, mixers). Stainless steel 304 is corrosion-resistant (against food raw material erosion) and easy to clean, complying with food-grade hygiene standards.
- Vehicle & Ship Parts: Used for fixing chassis, engines, and interior components of automobiles/ships. High-strength materials withstand vibration and impact, while the flange enhances stability.
2. High Strength & Heavy-Duty Capacity: Carbon steel Grade 10.9 has tensile strength ≥1000MPa, capable of withstanding tensile and shear forces in heavy-duty environments (e.g., industrial building materials, machine tools), without deformation or fracture.
3. Corrosion Resistance & Hygiene Performance: Stainless steel 304/316 resists acid, alkali, and salt spray erosion, with a smooth, dead-corner-free surface that is easy to clean and disinfect. Complies with food-grade hygiene standards (GB 14930.1) and medical device requirements.
4. Easy Installation & Good Interchangeability: The hexagonal head fits multiple tools (wrenches, electric screwdrivers), ensuring high installation efficiency. Complies with GB6177 standard with high dimensional precision (error ≤0.1mm), compatible with same-specification bolts and washers for strong interchangeability.
5. Anti-Loosening & Stability: The increased friction between the flange and the connected part provides certain anti-loosening performance, suitable for vibration environments (e.g., vehicle & ship parts, fans), reducing the risk of nut loosening.
Application Fields
- Industrial Building Materials: Used for connections in steel structure buildings, scaffolding, and railway facilities. Withstands heavy loads and vibrations, with the flange dispersing pressure to avoid damaging steel plates.
- Mechanical Equipment: Used for fixing machine tools, automotive engines, pumps, and fans. High-strength carbon steel bears heavy loads, and the hexagonal head facilitates installation and maintenance.
- Home Decoration: Used for assembling furniture (e.g., sofas, wardrobes, bookshelves). The flange disperses pressure to avoid damaging plates, and stainless steel offers an aesthetically pleasing and corrosion-resistant finish.
- Medical Equipment: Used for fixing medical devices (e.g., operating tables, imaging equipment, rehabilitation devices). Stainless steel 304 complies with medical hygiene requirements, with no harmful substance leaching.
- Food Industry: Used for assembling food processing machinery (e.g., packaging machines, conveyor lines, mixers). Stainless steel 304 is corrosion-resistant (against food raw material erosion) and easy to clean, complying with food-grade hygiene standards.
- Vehicle & Ship Parts: Used for fixing chassis, engines, and interior components of automobiles/ships. High-strength materials withstand vibration and impact, while the flange enhances stability.
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