Best flange bolts in 2026

flange bolts
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Selecting the right flange bolts for garden projects or automotive repairs requires a balance of material strength and corrosion resistance. Unlike standard bolts, flange bolts feature a built-in washer that distributes pressure more evenly across the surface, eliminating the need for separate washers in many applications. Our selection focuses on load-bearing capacity, coating durability, and the versatility of assortment kits to ensure a secure fit for various mechanical needs.
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820pcs Metric Flange Bolt Assortment, Bolts and Nuts Kit, M6x1.0, M8x1.25, M10x1.5, M12x1.75(16mm to 50mm) Bolts and Nuts Assortment, Flange Hex Bolts and Nuts Washers Kit, Yellow Zinc, 16 Sizes

820pcs Metric Flange Bolt Assortment, Bolts and Nu...

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RC Lelut - 820pcs Metric Flange Bolt Assortment, Bolts and Nuts Kit, M6x1.0, M8x1.25, M10x1.5, M12x1.75(16mm to 50mm) Bolts and Nuts Assortment, Flange Hex Bolts and Nuts Washers Kit, Yellow Zinc, 16 Sizes
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  • Nuts and bolts assortment kit 820pcs, 16 sizes of bolt screws, M6-1.0 x 16/20/25/30/40mm, M8-1.25 x 16/20/25/30/40mm, M10-1.5 x 20/30/40/50mm, M12-1.75 x 30/50mm, to provide you with various sizes of bolts and lock washers and flat washers, The fully threaded design ensures a secure and stable fit in a wide range of applications, meet your different needs.
  • Bolts and nuts kit classification is widely used in furniture, construction, ship assembly, machinery, automobile, motorcycle, electronics, engineering testing laboratory, furniture maintenance, garage maintenance, professional electricians, plumbers, builders, DIY and other indoor/outdoor places.
$39.95
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Mr. Pen - Mr. Pen- Nuts and Bolts Assortment Kit, 272 pcs, Black Carbon Steel, Grade 10.9, M6, M8, M10(12mm to 30mm), Flange Hex Head Metric Assorted Nuts and Bolts
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  • Mr. Pen nuts and bolts assortment kit includes 272 pieces of flange hex head bolts, nuts, washers, and lock washers, offering a comprehensive selection for metric fastening applications.
  • Made from high-grade 10.9 medium carbon alloy steel, this set delivers excellent strength, durability, and resistance to wear under high-stress conditions.
$9.99
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Besitu - Besitu 280Pcs Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5 (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, 10.9 Black Zinc Galvanized
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  • 【Metric Flange Bolt Assortment】This is nice selection of metric flange head bolts of the most common lengths along with the nuts and washers, Including M6-1.0 x 12/16/20/25/30mm, M8-1.25 x 16/20/25/30mm, M10-1.5 x30mm, 280pcs in total. The fully threaded design ensures a secure and stable fit in a wide range of applications.
  • 【10.9 Alloy and Black Galvanized】This flange bolt kit is crafted from 10.9 grade alloy steel with a durable black galvanized finish. If you're working inside the engine, you'll need high-strength Class 10.9 bolts on hand. Class 8.8 bolts are not rated for high-torque conditions.
$24.99
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Taiss - Taiss 3160PCS Metric Flange Bolt Assortment Kit,Nuts and Bolts Assortment Kit M2 M3 M4 M5 M6x1.0 M8x1.25 M10x1.5 Bolt(4-45mm) 42 Sizes Hex Socket Button & Cap Head Metric Screw 10.9 Black Zinc Plated
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  • Double-layer portable toolbox packaging : 280PCS Flange Bolt Kit and 2880PCS Hex Socket Button & Cap Head Metric Screw Assortment are packed in exquisite hand-held boxes,which are easy to carry and store.Bolts are classified and placed in separate compartments with labels.It is convenient to use.
  • 280PCS Flange Bolt Kit:10 Sizes Nuts and Bolts Assortment Kit,M6x1.0 bolt (12mm/16mm/20mm/25mm/30mm);M8x1.25 bolt (16mm/20mm/25mm/30mm);M10x1.5 bolt 30mm.Flange Nuts,Flat Washers, Lock Washers.
$56.99 59.99 USD
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YEEZET - YEEZET 240PCS M5 M6 M8 Flanged Bolts and Nuts Kit,Stainless Steel 304 Metric Flanged Hex Screws Nuts Includes 14 Most Common Sizes
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  • πŸš©γ€MATERIAL】Made of premium 304 stainless steel, which has high hardness, anti-rust, anti-corrosion, oxidation resistance and durability. Stainless steel hex nuts and bolts can work well in humid, high-temperature, and harsh environments.
  • πŸš©γ€SPECIFICATION】This set follows the standard metric system, including flanged hex bolts and flanged nuts in 14 commonly used sizes: M5x10mm,M5x16mm,M5x20mm,M5x25mm,M5x30mm,M6x12mm,M6x16mm,M6x20mm,M6x25mm,M6x30mm,M8x20mm,M8x25mm,M8x30mm,M8x35mm, flange bolts have a flange on the bottom of the head that distributes the load like a washer. There are 120 sets in total, amounting to 240pieces (M5*0.8mm,M6*1.0mm,M8*1.25mm) .
$35.99
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Kadrick - Kadrick 700Pcs Grade 8.8 Metric Bolt Assortment, M6 M8 M10 Flange Hex Heavy Duty Bolts and Nuts Kit,M6 x1.0 M8 x1.25 M10-1.25 (12mm to 45mm),Eco-Friendly Zinc Plated
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  • Comprehensive Set: This is an extensive set of flange bolts, nuts, and washers, totaling 700 pieces. It includes 175 pieces each of bolts, nuts, washers, and spring washers. With a total weight exceeding 8 pounds, this set offers great value for money and is ideal for keeping as a handy backup.
  • Outstanding Performance: The M6, M8, and M10 bolts in this set are made from high-quality carbon steel with a strength rating of 8.8. They exhibit exceptional mechanical performance, allowing them to withstand higher preload forces and providing excellent resistance against loosening.
$33.99
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Stacool - 2PCS Car Exhaust Manifold Bolts,Steel M10x1.5 mm Exhaust Bolts and Nuts Kit with Springs for Exhaust Gasket,Professional Exhaust Flange Bolts Car Accessories for Most Cars
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  • 【Shock Absorbing Spring】 This car bolt is different from similar products in the market, we also specially equipped with springs, the springs can absorb some of the vibration, reduce the impact of vibration on the fixed parts, prolong the life of the parts. In high temperature environments, the bolts with springs can compensate for this change through the compression or extension of the spring, maintaining the sealing and stability of the system.
  • 【Fixed Exhaust Gasket】 Car bolts are one of the key components to keep the exhaust system working properly, when being tightened, it will exert enough pressure on the gasket to enable the gasket to form an effective seal to keep a tight contact surface between the two to avoid leakage and to keep the engine running with a tight seal.
€6.99
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mankk - mankk 400PCS Metric Grade 10.9 Flange Bolts and Nuts Assortment Kit M6x1.0, M8x1.25, M10x1.5 (12mm to 45mm) Black Alloy Steel Class Hex Bolts and Nuts Washers Kit for Automotive
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  • 【High Quality Materials 】Flange bolts are made of 10.9 grade alloy steel with galvanized surface and high strength, which is very suitable for working inside the engine.
  • 【Product Features】Including two thread designs: full thread and half thread, to ensure stability and safety and meet different requirements. Metric flange head bolts, nuts and washers with the most common sizes can fully meet your needs.
$33.99
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RC Lelut - 820pcs Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5, M12x1.75 (16mm to 50mm) Bolts and Nuts Kit, White Zinc, 16 Sizes
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  • Bolts and nuts kit classification is widely used in furniture, construction, ship assembly, machinery, automobile, motorcycle, electronics, engineering testing laboratory, furniture maintenance, garage maintenance, professional electricians, plumbers, builders, DIY and other indoor/outdoor places.
  • Metric flange bolt assortment 820pcs, 16 sizes of bolt screws, M6-1.0 x 16/20/25/30/40mm, M8-1.25 x 16/20/25/30/40mm, M10-1.5 x 20/30/40/50mm, M12-1.75 x 30/50mm, to provide you with various sizes of bolts and lock washers and flat washers, The fully threaded design ensures a secure and stable fit in a wide range of applications, meet your different needs.
$29.95 39.95 USD
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Our Expert Verdict: flange bolts

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For most users, a Grade 10.9 black zinc kit offers the best balance of strength and price. For outdoor garden machinery, however, stainless steel is the only logical choice for longevity.

Market Overview: flange bolts

AI
The market is shifting toward comprehensive metric assortment kits that combine various lengths and diameters, catering to both DIY enthusiasts and professional mechanics.

Buying Guide: flange bolts

AI
When shopping for flange bolts, prioritize the material grade and the type of coating. Consider whether you need a specific size or a comprehensive assortment kit for multiple tasks.

Selection Criteria

Products were selected based on verified user feedback, material certifications (such as Grade 10.9), and the overall value provided by the piece count in each kit.

Budget Advice

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Entry-level kits are affordable for light home use, while mid-range and premium options typically offer higher-grade alloys or corrosion-resistant stainless steel.

Conclusion: flange bolts

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Whether you are repairing a lawn tractor or securing heavy outdoor equipment, the right hardware makes the difference between a lasting fix and a failed joint. Explore our full list to find the perfect kit for your project.

Frequently Asked Questions

AI
Zinc-plated bolts are generally more affordable and offer good protection for indoor or light outdoor use, while stainless steel is far superior for wet environments or chemical exposure to prevent rust.
In most cases, no. The integrated flange acts as a built-in washer to distribute the load. However, for very soft materials or specific high-torque applications, an additional washer may still be beneficial.
Grade 8.8 is standard for general construction, while Grade 10.9 or Grade 12.9 is required for high-stress automotive or structural applications where shear strength is critical.

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Why Trust This List?

Data-Driven Selection

Analysis of 0 verified customer reviews

Regularly Updated

Last updated 1 month ago

Independent Analysis

Objective criteria: rating, price, popularity

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820pcs Metric Flange Bolt Assortment, Bolts and Nuts Kit, M6x1.0, M8x1.25, M10x1.5, M12x1.75(16mm to 50mm) Bolts and Nuts Assortment, Flange Hex Bolts and Nuts Washers Kit, Yellow Zinc, 16 Sizes
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