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Stainless Steel 304 Through Hole Round Nut
Stainless Steel 304 Through Hole Round Nut is a high-precision cylindrical fastener designed for fixing shaft parts. Its core structure includes:
Through-hole design: A punch hole (diameter slightly larger than the shaft) allows shafts, pins, or bolts to pass through, eliminating the need for additional sleeves or washers, saving installation space;
Hexagon socket drive: Compliant with ISO 4762 international standards, it is compatible with wrenches, electric screwdrivers, and other tools, ensuring convenient installation and high torque transmission;
304 stainless steel material: Containing 18% chromium and 8% nickel, it forms a dense passivation film, providing excellent corrosion resistance and oxidation resistance (capable of withstanding moisture, weak acids/alkalis, and salt spray), suitable for harsh environments such as food processing, medical equipment, and outdoor facilities.
Product Description
Stainless Steel 304 Through Hole Round Nut is a high-precision cylindrical fastener designed for fixing shaft parts. Its core structure includes:
Through-hole design: A punch hole (diameter slightly larger than the shaft) allows shafts, pins, or bolts to pass through, eliminating the need for additional sleeves or washers, saving installation space;
Hexagon socket drive: Compliant with ISO 4762 international standards, it is compatible with wrenches, electric screwdrivers, and other tools, ensuring convenient installation and high torque transmission;
304 stainless steel material: Containing 18% chromium and 8% nickel, it forms a dense passivation film, providing excellent corrosion resistance and oxidation resistance (capable of withstanding moisture, weak acids/alkalis, and salt spray), suitable for harsh environments such as food processing, medical equipment, and outdoor facilities.
This product is primarily used to fix shafts, bearings, couplings, and small parts, preventing rotation or displacement. It is a core fastener in industries such as machine tools, precision machinery, and automobiles.
Through-hole design: A punch hole (diameter slightly larger than the shaft) allows shafts, pins, or bolts to pass through, eliminating the need for additional sleeves or washers, saving installation space;
Hexagon socket drive: Compliant with ISO 4762 international standards, it is compatible with wrenches, electric screwdrivers, and other tools, ensuring convenient installation and high torque transmission;
304 stainless steel material: Containing 18% chromium and 8% nickel, it forms a dense passivation film, providing excellent corrosion resistance and oxidation resistance (capable of withstanding moisture, weak acids/alkalis, and salt spray), suitable for harsh environments such as food processing, medical equipment, and outdoor facilities.
This product is primarily used to fix shafts, bearings, couplings, and small parts, preventing rotation or displacement. It is a core fastener in industries such as machine tools, precision machinery, and automobiles.
Product Parameter
The following are common metric specifications (compliant with GB/T 809 standards). Non-standard customization (e.g., adjusting through-hole diameter, height) is available:
Note: Specification is expressed as "Nominal Thread Diameter×Height×Through-Hole Diameter" (e.g., M6×15×6.5 means nominal thread diameter 6mm, height 15mm, through-hole diameter 6.5mm); through-hole diameter can be adjusted according to shaft diameter requirements (e.g., M8×20×9.0 for an M8 shaft).
| Nominal Thread Diameter (M) | Nominal Height (H, mm) | Through-Hole Diameter (D, mm) | Hexagon Socket Size (S, mm) | Example Specification |
| M3 | 5-15 | 3.5-4.0 | 2.5 | M3×8×3.5 |
| M4 | 6-20 | 4.5-5.0 | 3.0 | M4×10×4.5 |
| M5 | 8-25 | 5.5-6.0 | 4.0 | M5×12×5.5 |
| M6 | 10-30 | 6.5-7.0 | 5.0 | M6×15×6.5 |
| M8 | 12-40 | 8.5-9.0 | 6.0 | M8×20×8.5 |
| M10 | 15-50 | 10.5-11.0 | 8.0 | M10×25×10.5 |
| M12 | 18-60 | 12.5-13.0 | 10.0 | M12×30×12.5 |
Note: Specification is expressed as "Nominal Thread Diameter×Height×Through-Hole Diameter" (e.g., M6×15×6.5 means nominal thread diameter 6mm, height 15mm, through-hole diameter 6.5mm); through-hole diameter can be adjusted according to shaft diameter requirements (e.g., M8×20×9.0 for an M8 shaft).
Product Feature
304 Stainless Steel, Strong Corrosion Resistance:
The passivation film formed by chromium and nickel effectively resists moisture, weak acids/alkalis, and salt spray, suitable for food processing (e.g., packaging machines), medical equipment (e.g., operating tables), and outdoor facilities (e.g., scaffolding). Its service life is 2-3 times longer than 201 stainless steel.
Through-Hole Design, Space-Saving:
Allows shaft parts to pass through directly, eliminating the need for additional sleeves or washers, reducing weight by 30%-50%. Ideal for small devices (e.g., precision machinery, electronic equipment) or space-constrained applications (e.g., furniture assembly).
Hexagon Socket Drive, Convenient Installation:
Compliant with ISO 4762 standards, the hexagon socket size is precise (e.g., 5mm for M6), ensuring compatibility with wrenches and electric screwdrivers. The maximum torque can reach 15N·m, with no slipping, suitable for frequent disassembly and assembly (e.g., equipment maintenance).
High Thread Precision, Reliable Fixation:
Threads are machined via CNC lathes + thread rolling machines, with regular tooth profiles (error ≤0.02mm) and small fit clearances (IT6 grade precision). This ensures tight mating with bolts, preventing stripping and ensuring stable fixation.
High-Quality Surface Treatment, Neat Appearance:
The surface is polished (compliant with GB/T 1031 standards), smooth and burr-free, avoiding scratching of parts (e.g., shafts, bearings). The bright appearance is suitable for high-precision applications (e.g., precision machinery, photography equipment).
Customization Service, Flexible to Meet Needs:
The source manufacturer supports non-standard specification customization (e.g., adjusting through-hole diameter, height, thread parameters) and provides free samples. The delivery cycle is short (3-5 days for conventional specifications, 7-10 days for non-standard ones).
Application Fields
Machine Tool Industry: Used to fix machine tool spindles, lead screws, and couplings, preventing rotation and ensuring machining accuracy;
Precision Machinery: Used for fixing shaft parts in optical instruments, measuring devices, and small motors. High-precision threads ensure no loosening of parts;
Photography Equipment: Used for fixing parts in cameras, lenses, tripods, and gimbals. The through-hole design allows lens shafts to pass through, saving space;
Generators: Used to fix engine parts (e.g., crankshafts, camshafts) in diesel/gasoline generators. Corrosion resistance withstands high temperatures and moisture in engine compartments;
Automotive Industry: Used for fixing engine (e.g., cylinder heads, crankshafts), chassis (e.g., suspension brackets, drive shafts), and interior parts (e.g., dashboards, seats) in automobiles. 304 stainless steel resists vibration and corrosion;
Home Decoration: Used for assembling furniture (e.g., sofas, wardrobes, bookshelves) to fix hinges, slides, and shelf brackets. The through-hole design saves space, and the neat appearance enhances furniture aesthetics;
Industrial Building Materials: Used for connections in steel structure buildings, scaffolding, and railway facilities. Corrosion resistance extends the service life of parts;
Medical Equipment: Used for fixing parts in medical devices (e.g., operating tables, imaging equipment, rehabilitation devices). 304 stainless steel complies with medical hygiene requirements (no harmful substance leaching);
Food Industry: Used for assembling food processing machinery (e.g., packaging machines, conveyor lines, mixers). It resists weak acids/alkalis (e.g., acetic acid, citric acid in food) and is easy to clean (smooth, dead-corner-free surface);
Vehicle & Ship Parts: Used for fixing engine, chassis, and interior parts in automobiles/ships. High strength and corrosion resistance adapt to vibration and impact;
Communications Industry: Used for fixing internal parts in communications equipment (e.g., base stations, switches, routers). High-precision threads ensure no loosening of parts, avoiding impact on device performance.
The passivation film formed by chromium and nickel effectively resists moisture, weak acids/alkalis, and salt spray, suitable for food processing (e.g., packaging machines), medical equipment (e.g., operating tables), and outdoor facilities (e.g., scaffolding). Its service life is 2-3 times longer than 201 stainless steel.
Through-Hole Design, Space-Saving:
Allows shaft parts to pass through directly, eliminating the need for additional sleeves or washers, reducing weight by 30%-50%. Ideal for small devices (e.g., precision machinery, electronic equipment) or space-constrained applications (e.g., furniture assembly).
Hexagon Socket Drive, Convenient Installation:
Compliant with ISO 4762 standards, the hexagon socket size is precise (e.g., 5mm for M6), ensuring compatibility with wrenches and electric screwdrivers. The maximum torque can reach 15N·m, with no slipping, suitable for frequent disassembly and assembly (e.g., equipment maintenance).
High Thread Precision, Reliable Fixation:
Threads are machined via CNC lathes + thread rolling machines, with regular tooth profiles (error ≤0.02mm) and small fit clearances (IT6 grade precision). This ensures tight mating with bolts, preventing stripping and ensuring stable fixation.
High-Quality Surface Treatment, Neat Appearance:
The surface is polished (compliant with GB/T 1031 standards), smooth and burr-free, avoiding scratching of parts (e.g., shafts, bearings). The bright appearance is suitable for high-precision applications (e.g., precision machinery, photography equipment).
Customization Service, Flexible to Meet Needs:
The source manufacturer supports non-standard specification customization (e.g., adjusting through-hole diameter, height, thread parameters) and provides free samples. The delivery cycle is short (3-5 days for conventional specifications, 7-10 days for non-standard ones).
Application Fields
Machine Tool Industry: Used to fix machine tool spindles, lead screws, and couplings, preventing rotation and ensuring machining accuracy;
Precision Machinery: Used for fixing shaft parts in optical instruments, measuring devices, and small motors. High-precision threads ensure no loosening of parts;
Photography Equipment: Used for fixing parts in cameras, lenses, tripods, and gimbals. The through-hole design allows lens shafts to pass through, saving space;
Generators: Used to fix engine parts (e.g., crankshafts, camshafts) in diesel/gasoline generators. Corrosion resistance withstands high temperatures and moisture in engine compartments;
Automotive Industry: Used for fixing engine (e.g., cylinder heads, crankshafts), chassis (e.g., suspension brackets, drive shafts), and interior parts (e.g., dashboards, seats) in automobiles. 304 stainless steel resists vibration and corrosion;
Home Decoration: Used for assembling furniture (e.g., sofas, wardrobes, bookshelves) to fix hinges, slides, and shelf brackets. The through-hole design saves space, and the neat appearance enhances furniture aesthetics;
Industrial Building Materials: Used for connections in steel structure buildings, scaffolding, and railway facilities. Corrosion resistance extends the service life of parts;
Medical Equipment: Used for fixing parts in medical devices (e.g., operating tables, imaging equipment, rehabilitation devices). 304 stainless steel complies with medical hygiene requirements (no harmful substance leaching);
Food Industry: Used for assembling food processing machinery (e.g., packaging machines, conveyor lines, mixers). It resists weak acids/alkalis (e.g., acetic acid, citric acid in food) and is easy to clean (smooth, dead-corner-free surface);
Vehicle & Ship Parts: Used for fixing engine, chassis, and interior parts in automobiles/ships. High strength and corrosion resistance adapt to vibration and impact;
Communications Industry: Used for fixing internal parts in communications equipment (e.g., base stations, switches, routers). High-precision threads ensure no loosening of parts, avoiding impact on device performance.
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