Why Choose OMSS Stainless Steel Wing Nut
- Over 15 years of experience in stainless steel fluid equipment, received orders from more than 20 countries.
- Manufacturing with Mazak CNC equipment from Japan ensures high precision and thread accuracy.
- All the products possess a comprehensive and systematic quality inspection before shipment.
- Offering highly customizable services with our own factory and design team, adapts to specific demands.
- Ultra-simple ordering process: Send your requirements and get the customized solution.
Your Reliable Stainless Steel Wing Nut Supplier
The OMSS stainless steel wing nut applies to various industries. It is outstanding in resisting rust, corrosion, tarnishing, and chipping, and meets the demand for high hygienic standards.
OMSS is an expert in stainless steel OEM manufacturing. With extensive industry experience and advanced machinery, we supply extraordinary stainless steel fluid equipment with stable lead times. If you are looking for durable stainless steel wing nuts, OMSS offers exceptional customized stainless steel wing nuts. Place the order and get your ideal wing nuts soon.
Our Products
Fine polishing, features raised dots to increase friction, easy to grip, suits various usages, available in both 304 and 316L stainless steel.
Fine polishing, smooth surface, easy to clean thoroughly. Wide wings make it extra robust and higher torque for sufficient hand operation.
Fine polishing, features stripes and grooves on the wings to increase friction. Lower torque for quick and precise operation.
Fine polishing. Flat and triangle-shaped wings make it handy to operate, allowing removal by common tools like pillars when necessary.
Features of the OMSS Stainless Steel Wing Nut
The OMSS stainless steel wing nut is made by high-precision facilities and with extensive thread accuracy. This leads to a low assembly risk of matching and secures your production schedule.
The OMSS stainless steel wing nut is designed for hand operation. It supports fast installation and removal, and frequent adjustment demands.
The OMSS stainless steel wing nut is fine-polished and undergoes surface roughness measurement before shipping. And stainless steel is robust and stable for most cleaning methods.
The OMSS stainless steel wing nut is verified by multiple inspections before shipping and does not react with food, pharmaceuticals, or liquids. It has a smooth surface and can be cleaned by steam.
The OMSS stainless steel wing nut has optimal vibrant resistance. It has fewer safety risks of loosening in long-term usage and offers stable and predictable performance.
The OMSS stainless steel wing nut offers exceptional thermal resistance, vibrational resistance, and corrosion resistance, ensuring long-lasting performance.
The OMSS stainless steel wing nut supports high customization. You can customize the size, shape, logo, and finishing of your products.
The OMSS stainless steel wing nuts apply to a large scale of industry fields, including food, beverage, cosmetics, pharmacy, chemical, etc.
Easy Installation and Removal Without Tools
The OMSS stainless steel wing nut is ergonomically designed and can be easily installed or removed without using tools. This feature makes it convenient to adjust and fit the equipment that requires frequent loosening and tightening. For example, during beer production, it requires checking the liquid several times, using containers and pipes with a stainless steel wing nut, the operator can check the beer without taking a specific tool.
Verified 304, 304L and 316L Stainless Steel
The OMSS stainless steel wing nuts are made of standard 304, 304L, or 316L stainless steel, depending on the order. Before shipment, the products are all subjected to spectrometer measurement to ensure it contains enough Chromium (and Molybdenum in 316L standard material). You can check the inspection reports of the spectrometer measurement, or require a piece of material sample before placing the orders.
Superior Corrosion Resistance
The OMSS stainless steel wing nuts are made of stainless steel of 304, 304L, or 316L standard.
304 and 304L stainless steel resist a wide range of moderately oxidizing and reducing environments. They perform well as general fluid equipment, for example, applied in the food, beverage, and dairy industries. But the protective layer is weak when it contacts the chlorides (such as seawater, salty spray, some cleaning chemicals, etc.), especially at temperatures over 60°C.
316L stainless steel resists corrosion of harsh chemicals such as acids, alkalis, and chlorides. And is ideal for marine and other outdoor equipment.
Applications of Labeling Machine
The OMSS stainless steel wing nuts are made of 304, 304L, and 316L stainless steel wich has reliable resistance to general environmental corrosion and is widely used in food and beverage production.
The OMSS stainless steel wing nuts are used in the biopharmaceutical industry for their stable and hygienic standards.
The chemical industry selects the OMSS stainless steel wing nut for its chemical stability and convenience of operation.
The oil and gas industry requires a lot of operations on offshore platforms. OMSS provides 316L stainless steel wing nuts of extreme high-temperature and corrosion resistance to face the marine and chemical environment.
Automobile products go through strong and consistent vibration. OMSS stainless steel wing nuts offer exceptional stability and high-quality consistency in batches.
Semiconductor manufacturers purchase OMSS wingnuts for their extra clean and smooth surface, chemical resistance, and strict precision control.
- Certificate of Compliance
Customer Reviews
We ordered stainless steel tank accessories and pipe fittings from OMSS for industrial fluid handling applications. The products arrived on time with proper protection, and the installation process was smooth. Their team was responsive whenever we needed technical information before and after delivery.
ThomasWe have strict requirements for surface finish and hygiene standards in pharmaceutical equipment. OMSS stainless steel fittings showed excellent workmanship, with smooth surfaces and precise machining. Their products helped us meet our equipment assembly requirements and maintain reliable production performance.
MichaelWe purchased sanitary tri clamp fittings and stainless steel ferrules from OMSS for our beverage processing system. The dimensions were accurate, the polishing was clean, and the fittings connected smoothly with our existing pipes without additional adjustment. The consistent quality helped us improve installation efficiency.
Emily
Letter M refers to meter size in the metric thread system. And a large number means a larger threaded diameter. An M4 stainless steel wing nut has a 4mm diameter and is used for lightweight equipment.
An electrical wing nut refers to a winged wire connector. It is made of plastic and used to combine wires. It cannot be made of metal because it is required to provide insulation and prevent shocks or short circuits.
Low chromium content and salty environment.
Stainless steel resists rusting by its passive oxide layer. Chloride ions (normally found in seawater) can break down the passive oxide layer and result in rust. When the chromium content is low, for example, select 430 stainless steel stainless wing nuts for marine applications, the protective layer will break, and the steel will rust.
Compared to 304 stainless steel, 316L stainless steel has better corrosion resistance in marine and harsh chemical environments. 304 stainless steel has a lower cost than 316L stainless steel. It depends on the application and purchasing budget.
Supplier certification, material test reports, and quality control reports.
Certifications, such as ISO, CE, and 3-A, ensure the quality and safety of the product. Material test reports ensure the stainless steel wing nuts meet the 304/ 304L/ 316L standards. Quality control reports are sufficient to inspect the product quality consistency and process compliance.
What Is a Stainless Steel Wing Nut?
A stainless steel wing nut is a fastener with two wings, also known as a butterfly nut. They usually cooperate with bolts on clamps and pipe holders.
Most stainless steel wing nuts can be operated by hand. But when the wing nut is stuck, tools such as a wing nut driver, wing nut socket, or wing nut drill bit can be used to adjust it.
Structure
A stainless steel wing nut is constructed with three parts: internal thread, body, and wings.
Internal Thread
The internal thread is at the center of the stainless steel wing nut. It has different pitches to match the same-sized bolt threads. A larger thread diameter results in a higher load capacity.
Body
The body determines engagement depth and undergoes clamping stress. And the height of the body is related to the strength of the stainless steel wing nut. With a lower height, the thread engagement is unstable and has a risk of stripping.
Wings
The wings provide surfaces for gripping. The wing length should be designed with sufficient torque based on the diameter.
Design
There are specially designed stainless steel wing nuts, such as flanged stainless steel. The locking stainless steel wing nuts and heavy-duty stainless steel wing nuts are typical functionally designed examples.
Locking Wing Nut
The self-locking stainless wing nut has an integrated locking mechanism composed of a nylon ring and a spring washer, and has ribs under the nut body. The components add extra friction and maintain tension to prevent accidental loosening. The locking mechanism enhances the stability of self-locking wing nuts in vibrant conditions.
Heavy Duty Wing Nut
Heavy-duty stainless steel wing nuts are thicker, heavier, and have higher bending resistance than regular stainless steel wing nuts. They are specifically designed for heavy machinery and provide better durability and stability for heavy loads than regular wing nuts.
Why Is Stainless Steel Ideal for Making Wing Nuts?
For wing nuts, the material strength ensures the thread stripping resistance and prevents the wings from bending. Stainless steel is a material of high strength and toughness, which is stable in regular load environments and reliable in repeat assemblies.
Properties of Stainless Steel
Corrosion Resistance and Mechanical Strength
304, 304L, and 316L stainless steel resist general chemical corrosion. 316L stainless steel also remains stable in chloride environments. As for mechanical strength, stainless steel offers high tensile strength and good fatigue resistance. It also maintains durability from impact and vibration.
High Hygienic Performance
Stainless steel has a smooth and non-porous surface, which is easy to clean thoroughly, resists bacteria, and allows electrolytic polishing. This feature meets the standards of the food and medical industry.
Thermal Resistance
Stainless steel maintains stability in a wide range of temperatures. It remains tough in a low-temperature environment and resists softening at high temperatures. This property makes stainless steel ideal for steam systems and thermal cycling environments, which involve pipes and wing nuts.
Environmentally Friendly
Stainless steel is a type of material that can be ultimately recycled without weakening its ability. Its long service life reduces the frequency of replacement. Meanwhile, stainless steel does not leak poisonous substances or cause water pollution. It can be maintained and cleaned with eco-friendly cleaning agents.
Common Sizes of Stainless Steel Wing Nuts
The core of the stainless steel wingnut size is the thread diameter. Wing nuts of different diameter systems are not interchangeable. And there are two main sets of wing nut size systems: Metric Thread and Imperial Thread.
Metric Thread (M-series)
The metric tread system is commonly used in Europe and Asia. The unit is millimeters, and the chart below is based on the most common series of metric thread (DIN 315 Type A).
| Metric Wing Nut Size Chart | |||||
| Thread (d) | Pitch (P) | Wing Span (e) | Overall Length (L) | Nut Height (m) | Body Dia (dc) |
| M4 | 0.7 | 20 | 10 | 8 | 8 |
| M5 | 0.8 | 26 | 13 | 11 | 10 |
| M6 | 1 | 33 | 17 | 14 | 12 |
| M8 | 1.25 | 39 | 20 | 18 | 15 |
| M10 | 1.5 | 51 | 26 | 22 | 18 |
| M12 | 1.75 | 60 | 30 | 26 | 21 |
| M16 | 2 | 73 | 36 | 32 | 27 |
| M20 | 2.5 | 90 | 45 | 40 | 34 |
Imperial Thread
The imperial thread system is based on inches. It has three most used specific systems: BSP, UNC, and UNF.
BSP (British Standard Pipe)
BSP is widely used in the fluid equipment area. Stainless steel wing nuts for pipe connections that require high sealing capacity for liquid, gases, and steam are mostly sized in the BSP standard.
| BSP Wing Nut Dimensions | |||||
| BSP Size | Major Dia (mm) | TPI | Wing Span (mm) | Overall Height (mm) | Body Dia(mm) |
| 1/8″ BSP | 9.7 | 28 | 28 | 14 | 12 |
| 1/4″ BSP | 13.2 | 19 | 35 | 18 | 15 |
| 3/8″ BSP | 16.7 | 19 | 45 | 22 | 18 |
| 1/2″ BSP | 20.9 | 14 | 60 | 27 | 22 |
| 3/4″ BSP | 26.4 | 14 | 75 | 34 | 27 |
| 1″ BSP | 33.2 | 11 | 95 | 42 | 34 |
TPI: The full name is threads per Inch. It distinguishes how fine the thread is. Stainless steel wing nuts with coarse threads have fewer TPI compared to fine threads. More TPI means higher locking strength, better vibration resistance, less robust, and harder hand operation.
UNC (Unified National Coarse)
The UNC standard stainless steel wing nuts are applied in the general industries in North America.
| UNC Wing Nut Dimensions | |||||
| Nominal Size | Major Dia (in) | TPI | Wing Span (mm) | Height (mm) | Body Dia (mm) |
| #10 | 0.19 | 24 | 28 | 14 | 11 |
| 1/4″ | 0.25 | 20 | 32 | 15 | 13 |
| 5/16″ | 0.3125 | 18 | 38 | 18 | 15 |
| 3/8″ | 0.375 | 16 | 45 | 22 | 18 |
| 7/16″ | 0.4375 | 14 | 52 | 25 | 20 |
| 1/2″ | 0.5 | 13 | 60 | 27 | 22 |
| 9/16″ | 0.5625 | 12 | 68q | 30 | 25 |
| 5/8″ | 0.625 | 11 | 74 | 32 | 27 |
| 3/4″ | 0.75 | 10 | 90 | 40 | 34 |
| 7/8″ | 0.875 | 9 | 105 | 45 | 38 |
| 1″ | 1 | 8 | 120 | 50 | 42 |
UNF (Unified National Fine)
UNF standard stainless steel wing nuts are used in industries with high-precision demands and vibration-sensitive applications.
| UNF Wing Nut Dimensions | |||||
| Nominal Size | Major Dia (in) | TPI | Wing Span (mm) | Height (mm) | Body Dia (mm) |
| #10 | 0.19 | 32 | 28 | 14 | 11 |
| 1/4″ | 0.25 | 28 | 32 | 15 | 13 |
| 5/16″ | 0.3125 | 24 | 38 | 18 | 15 |
| 3/8″ | 0.375 | 24 | 45 | 22 | 18 |
| 7/16″ | 0.4375 | 20 | 52 | 25 | 20 |
| 1/2″ | 0.5 | 20 | 60 | 27 | 22 |
| 9/16″ | 0.5625 | 18 | 68 | 30 | 25 |
| 5/8″ | 0.625 | 18 | 74 | 32 | 27 |
| 3/4″ | 0.75 | 16 | 90 | 40 | 34 |
| 7/8″ | 0.875 | 14 | 105 | 45 | 38 |
| 1″ | 1 | 12 | 120 | 50 | 42 |
Maintaining Method
The Core of Maintaining
Stainless steel gets rusted in improper conditions and use. The main component that keeps it from rust and corrosion is the protective passive film. It covers the inside metal completely, and keep inside from contacting other objects that might cause a reaction.
When the passive layer was broken by scratches or harsh chemicals, stainless steel might get pitting corrosion, rusting stains on the surface, crevice corrosion, and thread galling.
Therefore, the core of maintaining stainless steel wing nuts is to protect the passive layer, prevent contamination and reduce mechanical stress.
Routine Cleaning
Maintaining Frequency
The frequency depends on the applied conditions.
- In the indoor dry environment, the stainless steel wing nuts should be cleaned every 3 to 6 months.
- In the humid industry environment, the stainless steel wing nuts should be cleaned every 1 to 3 months.
- In the marine and salty spray environment, the chloride ions can react with the chromium in the protective film. 316L stainless steel has molybdenum to resist corrosion from chloride, but the stainless steel wing nuts should be cleaned every 2 to 4 weeks.
- In the chemical environment, the inspection frequency depends on the corrosion severity.
General Cleaning Method
For routine cleaning of most applications, use warm water and chloride-free neutral detergent to prevent eroding 304/ 304L stainless steel. Soft cloth and nylon brushes are recommended.
Cleaning Method for Specific Industries
For specific industries, the cleaning frequency and method vary from those of general industries.
- Food and Beverage Industry
Clean the wing nuts every day with food-grade cleaning agents, and electrolytically polish the surface.
- Oil and Gas Industry
The environment of the oil and gas industry is about to be exposed to the chloride. Therefore, 316L standard stainless steel is required as the wing nut material. And regularly inspecting for pitting corrosion is highly suggested.
- Semiconductor Industry
The semiconductor fabs operate in Class 100 cleanrooms or cleaner environments. This demands that the stainless steel wing nuts have no metal particles on the surface. It is recommended to electrolytic polish the surface periodically.
Cautions
For routine cleaning and maintenance, there are tools and detergents that should be avoided, which include wire brushes, chlorine-based detergents, strong acids, and sandpapers.
Rust Preventing
Regular Cleaning
Use mild detergents and soft cloths, make sure to rinse the cleaning agents thoroughly, and dry the stainless steel wing nuts completely after regular cleaning.
Preventing Thread Corrosion and Galling
When the threads of the stainless steel wing nuts gall, the surface is broken and will rust soon. To prevent thread rust, the installation should avoid over-tightening and speed too fast. You can also use anti-seize lubricant on the thread to avoid dry metal-to-metal friction.
Iron Contamination
When in contact with carbon steel dust, stainless steel may experience free iron contamination. In many cases, the rust is not caused by low-quality stainless steel material, but actually by contaminated carbon steel particles. To prevent this type of rust, carbon steel tools should be kept and used separately.
Scratch Recovering
Light Scratches
Light surface scratches only affect the finish of the stainless steel wing nuts without deep metal damage, usually appearing on the polished or brushed finishes as hairline scratches.
To deal with this type of scratch, you can use a microfiber cloth and non-abrasive stainless steel polish and rub along the grain. When the superficial scratches are removed, clean the surface with warm water.
Moderate Scratches
Moderate scratches appear as shallow, visible grooves, and the protective layer of the stainless steel wing nut can be damaged.
To deal with this type of scratch, you can use fine sandpaper of 400–800 grit and sand in the direction of the grain. Then gradually change to finer sandpaper of 1000–1500 grit and finish with a polishing compound. After sanding and polishing, clean the surface thoroughly with warm water and wipe it completely dry. Expose the surface to the air and keep it from water and chemicals until the passive film reforms completely.
Deep Scratches
For deep scratches that penetrate below the surface layer, replacing the stainless steel wing nut is safer, especially when the structural integrity is affected. Because with deep scratches, the steel may trap contaminants, and with a risk of localized corrosion. The advice below is for temporary use when replacement cannot be reached instantly.
Sand with 240-400 grit sandpaper as a start, and progressively move to finer sandpaper and finish with polishing. You can also consider chemical passivation treatment if it is available.
