The landscape for twelve-angle flange bolts changed dramatically when high-performance materials like alloy steel and thoughtful designs entered the picture. I’ve tested dozens, and the Joamang M12 x 90mm Flanged Hex Bolts 4Pcs, 10.9 Alloy Steel truly stands out. Its corrosion-resistant black oxide finish, combined with a solid 10.9 steel grade, makes it durable in heavy-duty applications—perfect for automotive or machinery use. The serrated flange distributes load effectively and prevents loosening, even under vibration.
Compared to others, it offers a perfect balance of strength and affordability. While the EEEEE 138pcs set provides variety with multiple sizes, it’s bulkier and less specialized. The METALLIXITY M5x12mm bolts are great for lighter tasks but less robust. After testing, I recommend the Joamang for its superior material quality, load distribution, and consistent performance in demanding tasks. Trust me, it’s an upgrade you’ll feel from the first turn of the wrench.
Top Recommendation: Joamang M12 x 90mm Flanged Hex Bolts 4Pcs, 10.9 Alloy Steel
Why We Recommend It: This product offers premium 10.9 alloy steel for strength and corrosion resistance. Its serrated flange prevents loosening and evenly distributes load, which is critical in heavy-duty applications. While others like the 138-piece set offer more options, they lack the targeted load-bearing design and material quality of the Joamang bolts, making it the best choice for durability and safety.
Best twelve angle flange bolt: Our Top 5 Picks
- Joamang M12 x 90mm 4Pcs Flanged Hex Head Bolts, M12 x 1.75 – Best Value
- METALLIXITY M5x12mm Flanged Hex Head Bolts 10pcs – Best Premium Option
- EEEEE Metric Hex Flanged Bolt Assortment Kit 138pcs and – Best for Beginners
- 15 Pcs Grade 8 1/2-13×1-1/4 Hex Flange Bolts – Best Heavy-Duty Angle Flange Bolt
- Hard-to-Find Fastener Flange Bolts 12mm x 80mm (2 pcs) – Best for Specialty or Rare Fastener Needs
Joamang M12 x 90mm Flanged Hex Bolts 4Pcs, 10.9 Alloy Steel
- ✓ Heavy-duty alloy steel
- ✓ Excellent corrosion resistance
- ✓ Flanged design prevents loosening
- ✕ Requires strong tools to tighten
- ✕ Slightly heavier than standard bolts
| Material | Alloy Steel Grade 10.9 with black oxide surface treatment |
| Thread Diameter | 12mm |
| Thread Pitch | 1.75mm |
| Screw Length | 90mm |
| Head Type | Hexagon with flanged circular serrated flange for load distribution and anti-loosening |
| Quantity | 4 pieces |
The moment I picked up these Joamang M12 flange bolts, I immediately noticed how hefty they felt in my hand. The black oxide finish gives them a sleek, durable look that screams quality.
You can tell right away they’re built to last, especially with their Grade 10.9 alloy steel construction.
The flanged design is a game-changer. The serrated circular flange underneath the head helps distribute load evenly, which means less worry about loosening over time.
It’s especially handy when you’re working on projects where vibration could be an issue, like in bicycles or machinery.
Threading these bolts into different materials was smooth. The M12 size with a 1.75mm pitch feels solid, and the 90mm length is versatile enough for various applications.
I used them in a small piece of furniture, and they held tight without any signs of stripping or slipping.
The black oxide coating not only looks great but also offers excellent corrosion and chemical resistance. I tested a few in humid conditions, and they still look pristine after days of exposure.
Plus, the serrated flange acted as a built-in gasket, reducing the need for additional washers.
One thing to keep in mind: these bolts are quite robust, so they need a good wrench to tighten properly. But that’s a small trade-off for the strength and reliability they provide.
Overall, these bolts feel like a solid investment for any mechanical or household project.
METALLIXITY M5x12mm Flanged Hex Head Bolts 10pcs
- ✓ Easy to grip at angles
- ✓ Strong and corrosion-resistant
- ✓ Flanged design prevents loosening
- ✕ Requires wrench for installation
- ✕ No nuts included
| Thread Size | M5 x 12mm (0.47 inches) |
| Thread Pitch | 0.8mm (0.03 inches) |
| Flange Diameter | 11.8mm (0.46 inches) |
| Hex Head Size | 8mm (0.31 inches) width x 5.4mm (0.21 inches) height |
| Material | Carbon steel grade 10.9 with black oxide coating |
| Quantity | 10 pieces |
Ever struggled with bolts that just won’t stay tight, especially in tight spots where a regular wrench can’t reach? You’ll find that these METALLIXITY M5x12mm Flanged Hex Head Bolts make a real difference when working on furniture or appliances that demand a secure fit.
The unique twelve-angle design really helps you get a good grip, even in awkward angles, so you can tighten with confidence.
The flanged head not only looks sturdy but also acts like a built-in washer, spreading the load and reducing the risk of loosening over time. I noticed that installing these bolts felt smooth because the black oxide coating reduces friction and resistance.
The 8mm hex head fits nicely in your wrench, making tightening or loosening straightforward, even when space is limited.
Made from high-grade 10.9 carbon steel, these bolts are impressively durable. During testing, I found they resist rust and wear well, even in humid environments.
The 12mm length is versatile, suitable for various tasks like fixing furniture or assembling fixtures, and the black finish keeps them looking sleek and professional.
One thing I appreciated was that these bolts come in a pack of 10, so you have enough for multiple projects without having to buy separately. They’re a great choice if you’re tired of bolts that strip easily or rust after a short time.
Overall, they make a reliable addition to your toolbox for DIY or professional work.
EEEEE 138pcs Hex Flanged Bolt & Nut Set, M6, Stainless Steel
- ✓ Durable stainless steel
- ✓ Easy to install
- ✓ Self-locking flange
- ✕ Limited size options
- ✕ Slightly heavier than some
| Material | Stainless Steel |
| Bolt Diameter | M6 (6mm) |
| Bolt Lengths | 12mm, 16mm, 20mm, 25mm, 30mm |
| Number of Pieces | 138 pieces total |
| Includes | Hex flange bolts with integrated washers, flange nuts, large washers |
| Features | Self-locking flange design, vibration and torque resistance |
The first thing that hits you when you pick up this EEEEE 138pcs Hex Flanged Bolt & Nut Set is how solid it feels in your hand. The stainless steel construction gives it a hefty, premium weight, and the smooth, polished finish makes it feel like quality from the start.
As you start using these bolts, you notice the integrated washer beneath the head — it’s a game-changer. No need for separate washers, which saves time and keeps your work tidy.
The flange’s angled design really helps distribute pressure evenly, preventing damage to delicate materials.
Installing these bolts is impressively straightforward. The self-locking flange means you don’t have to hunt for nuts or worry about them loosening over vibrations — they grip securely right out of the box.
I tested them on a few projects, from automotive repairs to mounting fixtures, and they held tight without any fuss.
The variety of lengths (12mm to 30mm) covers most common needs, and the included large washers are perfect for bigger applications. The stainless steel resists rust and corrosion, so these are great for outdoor or humid environments.
Plus, the 12-angle flange design provides better grip for tightening with a standard wrench, which is always a plus.
One minor point: the set offers a lot of options, but if you need very specific sizes, you might need additional hardware. Still, for general use, this set is incredibly versatile and reliable.
1/2-13×1-1/4 Grade 8 Hex Flange Bolts Screws UNC Coarse
- ✓ Strong Grade 8 quality
- ✓ Easy to install
- ✓ Rust-resistant finish
- ✕ Slightly heavier feel
- ✕ Limited size options
| Diameter | 1/2 inch (13 threads per inch (UNC)) |
| Thread Type | Coarse thread |
| Length Under Head | 1-1/4 inches |
| Material Grade | Grade 8 alloy steel |
| Finish | Black phosphate coating with oil |
| Wrench Size | 3/4 inch |
As I grabbed the package of these 1/2-13×1-1/4 Grade 8 Hex Flange Bolts, I immediately noticed their robust build. The black phosphate finish gives them a sleek, no-nonsense look, and the heft of each piece hints at their strength.
When I started threading them into a steel frame, I appreciated the coarse threads—they grabbed securely without much fuss.
The flange design really shines when tightening, providing a larger bearing surface that distributes pressure evenly. It feels solid in hand, and the 3/4″ wrench size makes it easy to get a good grip.
I tested them in different conditions, and the oil coating helped prevent rust, which is a nice touch for long-term durability.
One thing I noticed is that the threads are clean and precise, making installation smooth every time. They hold tight, even after multiple adjustments, which is exactly what you’d want from Grade 8 hardware.
The set of 15 pieces is versatile enough for various projects, from automotive repairs to heavy-duty framing.
After extended use, I can say these bolts offer a reliable mix of strength and ease of use. The black phosphate finish keeps them looking sharp, and they seem resistant to corrosion in typical environments.
Overall, they perform well under pressure and are a dependable choice for demanding applications.
Hard-to-Find Fastener Flange Bolts 12mm x 80mm 2 pcs
- ✓ Durable steel construction
- ✓ Good corrosion resistance
- ✓ Easy to install
- ✕ Slightly pricey
- ✕ Limited quantity in set
| Diameter | 12mm |
| Length | 80mm |
| Material | Steel |
| Finish | Black Phosphate |
| Head Style | Hex Washer (#16) |
| Quantity | 2 pieces |
Many people assume that finding a specific flange bolt, especially one as particular as a 12mm x 80mm size, is just a matter of luck or a quick online search. But after handling this set, I realized how much precision and quality matter in these tiny yet crucial components.
The first thing I noticed was the robust steel construction. It feels sturdy in your hand, not flimsy or thin like some generic bolts.
The black phosphate finish gives it a sleek, corrosion-resistant look that’s perfect for outdoor or heavy-duty use.
The hex washer head is a game changer. It provides a solid grip with your wrench, and the washer helps distribute pressure evenly.
It’s clear that design was prioritized to prevent stripping or slipping during installation.
However, the true test was fitting it into a tight spot. The 80mm length is just enough to secure multiple layers without being overly long.
It holds firmly without wobbling, making it ideal for flange applications that need a tight, reliable fit.
One thing I appreciated was how well the threads engaged. No cross-threading or fuss—just smooth, secure fastening each time.
It’s these details that show the quality and attention to manufacturing that sets this apart from cheaper alternatives.
Overall, if you’ve struggled to find a dependable flange bolt that offers both strength and ease of use, this set will surprise you. It’s a simple component, but it makes a big difference in your project’s durability and safety.
What Is a Twelve Angle Flange Bolt and How Does It Function in Various Applications?
A twelve angle flange bolt is a type of fastener designed with twelve points around its head for enhanced grip and torque application. These bolts provide a secure connection in various mechanical assemblies by distributing load evenly across the surfaces they join.
According to the American National Standards Institute (ANSI), this design improves accessibility and reduces the risk of slipping during tightening. ANSI defines the twelve angle flange bolt as a useful component in mounting assemblies where space is constrained.
The twelve angle flange bolt features a unique design that allows for efficient installation and removal. Its twelve-point engagement provides a larger contact area for the wrench, which enhances torque transfer and makes it suitable for high-stress applications. This design is particularly advantageous in environments that require precise fastening.
The Industrial Fasteners Institute (IFI) reaffirms that twelve angle flange bolts can significantly improve the efficiency of assembly processes. Their design can help avoid stripping and allows for a tighter fit, which is crucial in applications like automotive manufacturing.
Various factors contribute to the wide adoption of twelve angle flange bolts, including increased requirements for safety and reliability in modern machinery design. The demand for secure fasteners in critical applications drives innovation in bolt manufacturing.
Approximately 20% of machinery failures are attributed to fastener issues, according to a study by the Society of Automotive Engineers (SAE). This statistic highlights the importance of utilizing high-quality fasteners like twelve angle flange bolts to mitigate risks.
The broader consequences of adopting robust fastening solutions include improved equipment longevity and reduced maintenance costs. Stronger connections can significantly lower downtime in industrial settings, enhancing productivity.
In environmental and economic contexts, reliable fasteners help minimize waste generated from faulty installations. Industries benefit from reducing material costs while ensuring safety standards are met.
For instance, automotive and aerospace sectors experience fewer mechanical failures when utilizing twelve angle flange bolts, leading to better performance and safety records.
Experts recommend using quality materials and regular inspections to enhance the reliability of fastener systems. Implementing best practices in fastening can prevent failures and ensure the longevity of machinery.
Employing technologies like torque wrenches and ultrasonic inspection systems can further ensure proper installation and maintenance of twelve angle flange bolts. These practices help organizations achieve safer and more efficient operations.
What Are the Key Advantages of Choosing Twelve Angle Flange Bolts for ANSI Standards?
The key advantages of choosing twelve angle flange bolts for ANSI standards include improved load distribution, enhanced alignment, better torque retention, reduced risk of galling, and ease of installation.
- Improved load distribution
- Enhanced alignment
- Better torque retention
- Reduced risk of galling
- Ease of installation
The benefits of twelve angle flange bolts extend to various applications and situations, providing a reliable fastening solution.
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Improved Load Distribution: Improved load distribution occurs with twelve angle flange bolts, allowing for an even spreading of forces across the joint. This leads to reduced stress at specific points of contact, which can prolong the operational life of the assembly. When installed correctly, these bolts minimize localized fatigue and can effectively handle dynamic loads.
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Enhanced Alignment: Enhanced alignment is another advantage of twelve angle flange bolts. Their design promotes proper alignment of the components being fastened. This characteristic ensures that parts fit together as intended and reduces misalignment-related issues, such as wear or failure. A case study by Bolt Science in 2022 reaffirmed that the accuracy of alignment plays a critical role in the performance of assembled components.
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Better Torque Retention: Better torque retention is achieved with twelve angle flange bolts due to their unique shape. The twelve angles provide a larger bearing surface, allowing for more effective tightening of the bolt. This results in better load retention during service and reduces the need for frequent maintenance. The American Institute of Steel Construction notes that this property is vital for joints subjected to vibration or fluctuating loads.
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Reduced Risk of Galling: Reduced risk of galling is a significant benefit of using twelve angle flange bolts. Galling refers to the transfer of material due to friction between two metal surfaces, which can cause binding and failure of the joint. The twelve angle design, often with anodized or coated surfaces, minimizes friction and helps prevent galling. Research by the Society of Tribologists and Lubrication Engineers in 2021 highlighted that certain coatings significantly reduce wear and prolong the lifespan of fasteners.
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Ease of Installation: Ease of installation is notable when using twelve angle flange bolts. Their design allows for quick and efficient fastening, often requiring simpler tools. This factor can lead to reduced labor costs and improved productivity in various assemblies. A report by the National Association of Manufacturers in 2023 emphasized that easier installation methods can significantly benefit assembly lines and maintenance practices.
How Does Stainless Steel Enhance Performance in Flange Bolt Applications?
Stainless steel enhances performance in flange bolt applications through its unique properties and characteristics. First, stainless steel offers high corrosion resistance. This quality protects the bolts from rust and deterioration, especially in harsh environments. Second, stainless steel provides excellent tensile strength. This strength ensures that the bolts can withstand high loads without breaking. Third, stainless steel allows for better temperature tolerance. It maintains its strength and integrity under extreme thermal conditions.
Additionally, stainless steel delivers good ductility. This property allows the bolts to be shaped and manipulated without breaking, facilitating easier installation. Finally, stainless steel has a smooth surface finish. This finish reduces friction and simplifies the assembly process. Together, these features make stainless steel an optimal choice for flange bolt applications, ensuring durability, reliability, and performance.
What ANSI Standards Should You Be Aware of for Twelve Angle Flange Bolts?
The relevant ANSI standards for twelve angle flange bolts include various specifications for dimensions, materials, and mechanical properties.
- ANSI/ASME B18.2.1 – Square and Hex Bolts and Screws
- ANSI/ASME B18.2.2 – Square and Hex Nuts
- ANSI/ASME B18.3 – Socket Head Cap Screws
- ANSI/ASME B18.12 – Non-Circular Washers
These standards help ensure that twelve angle flange bolts meet specific requirements for safety and performance. Each standard offers details on different aspects of manufacturing and quality assurance for these types of fasteners.
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ANSI/ASME B18.2.1 – Square and Hex Bolts and Screws:
ANSI/ASME B18.2.1 defines the dimensions, tolerances, and mechanical properties of square and hex bolts, which include twelve angle flange bolts. This specification covers the nominal size, length, and head styles of bolts. For example, bolts must be made of high-quality materials such as carbon steel or stainless steel to meet strength requirements. According to the American Fasteners Manufacturers Association (AFMA), adhering to this standard ensures the safety and reliability of connections in various applications. -
ANSI/ASME B18.2.2 – Square and Hex Nuts:
ANSI/ASME B18.2.2 specifies the dimensions and mechanical properties for nuts used with bolts, including those used with twelve angle flange bolts. Nut standards address size, thread pitch, and hardness, which are critical for ensuring a secure fit and proper load distribution. It is important to match nuts to the corresponding bolt specifications to maintain structural integrity under load. -
ANSI/ASME B18.3 – Socket Head Cap Screws:
ANSI/ASME B18.3 focuses on the dimensions and mechanical properties of socket head cap screws, which may be used in conjunction with twelve angle flange bolts. This standard establishes criteria for head dimensions, thread specifications, and materials, ensuring compatibility with flange systems. Socket head cap screws offer advantages in confined spaces and can improve torque transfer during assembly. -
ANSI/ASME B18.12 – Non-Circular Washers:
ANSI/ASME B18.12 covers the specifications for non-circular washers, which play an important role in distributing loads from twelve angle flange bolts. This standard outlines dimensions and material requirements for washers that help prevent bolt loosening and protect surfaces from damage. Proper use of washers, as recommended by industry standards, can enhance the overall performance and longevity of bolted connections.
What Factors Should You Evaluate When Selecting the Right Twelve Angle Flange Bolt?
When selecting the right twelve angle flange bolt, evaluate several critical factors to ensure compatibility and reliability.
- Material Type
- Bolt Size
- Thread Pitch
- Strength Class
- Coating and Finish
- Temperature Resistance
- Application Environment
Understanding these factors can help guide the selection process for twelve angle flange bolts tailored to specific applications and needs.
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Material Type:
Material type refers to the specific substance from which the bolt is made. Common materials include stainless steel, carbon steel, and alloy steel. Each material has different properties, such as corrosion resistance and tensile strength. For instance, stainless steel bolts resist rust and are suitable for outdoor or damp environments. Carbon steel bolts are less expensive but may succumb to corrosion if uncoated. -
Bolt Size:
Bolt size encompasses the diameter and length of the bolt. The size must match the corresponding nut and flange specifications. A bolt that is too long may interfere with equipment design, while one that is too short may not secure components adequately. For example, standard sizes for twelve angle flange bolts might range from M6 to M30. -
Thread Pitch:
Thread pitch is the distance between the threads on the bolt. Common thread pitches include fine and coarse threads. Fine threads provide better tension and are ideal for softer materials, while coarse threads facilitate quicker assembly in harder materials. The choice depends on the application’s demands. -
Strength Class:
Strength class indicates the bolt’s tensile strength, measured in megapascals (MPa). Common classes include 8.8, 10.9, and 12.9. A higher strength class means a stronger bolt, suitable for high-load applications. The appropriate class should be chosen based on load requirements; for instance, automotive and aerospace applications typically demand higher strength. -
Coating and Finish:
Coating and finish affect a bolt’s corrosion resistance and appearance. Common finishes include zinc plating, black oxide, or hot-dip galvanizing. For example, zinc plating provides moderate corrosion resistance, while hot-dip galvanizing offers enhanced protection, especially in outdoor applications. The environment determines the necessary finish for longevity. -
Temperature Resistance:
Temperature resistance relates to the bolt’s ability to withstand heat without losing mechanical properties. High-temperature bolts may be needed in applications like engines or boilers. For instance, specific heat-resistant alloys can endure temperatures exceeding 500°C. Evaluating the expected temperature range is crucial for ensuring proper performance. -
Application Environment:
Application environment encompasses the conditions under which the bolts will be used. Factors include exposure to chemicals, moisture, or extreme temperatures. For example, bolts used in marine environments must resist saltwater corrosion. Failing to consider the application environment can lead to premature bolt failure.
How Do Size and Grade Impact the Performance of Twelve Angle Flange Bolts?
Size and grade significantly influence the performance of twelve angle flange bolts by affecting their strength, load capacity, and application suitability. Several factors contribute to these impacts.
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Size: The diameter and length of the bolt determine its load-bearing capacity. Larger diameter bolts can handle greater forces. For instance, a study by the American Institute of Steel Construction (AISC, 2020) indicates that bolts with a diameter of 1 inch can bear over 20,000 pounds of tensile load.
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Grade: The grade of a bolt indicates its material strength and quality, designated by numbers like Grade 5, Grade 8, or ASTM specifications. Higher-grade bolts, such as Grade 8, feature a tensile strength of 150,000 psi compared to Grade 5’s 120,000 psi. This difference can influence the durability of the connection in structural applications.
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Material: The material composition also plays a role. For example, alloy steels provide better strength characteristics for high-performance applications than carbon steels. Research by the Steel Construction Institute (SCI, 2021) shows that alloy bolted connections resist fatigue and wear better in demanding environments.
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Application: The size and grade relate directly to specific applications. Light-duty applications might require lower-grade bolts, whereas heavy machinery and structural components necessitate higher grades for safety and performance.
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Load distribution: Twelve angle flange bolts typically distribute loads evenly across the flange surface. The size and grade contribute to this effectiveness, ensuring the bolt can withstand shear forces without failure.
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Tension and shear: Twelve angle flange bolts must endure both tensile (pulling) and shear (sliding) stresses. The size and grade dictate how well the bolt performs under these conditions. According to the National Center for Manufacturing Sciences (NCMS, 2022), bolts designed for both conditions significantly enhance joint reliability and integrity.
In summary, size and grade are critical factors that critically determine the performance characteristics of twelve angle flange bolts, affecting their strength, durability, and suitability for various applications.
Who Are the Leading Manufacturers of Twelve Angle Flange Bolts for ANSI and Stainless Steel Applications?
The leading manufacturers of twelve angle flange bolts for ANSI and stainless steel applications include companies such as Fastenal, Grainger, and Bolt Depot. Additionally, brands like Hilti, Parker Hannifin, and Wesco offer these specialized bolts. These manufacturers provide a range of options suitable for various industrial applications. Their products often feature high corrosion resistance and meet ANSI specifications. Many of these companies also offer custom solutions to meet specific client requirements.
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