Grade 8.8/10.9/12.9 Flange Bolts | Wholesale for Heavy Duty
The built-in flange design increases the bearing area under the bolt head, which eliminates the need for separate washers. This structure ensures a more secure, anti-loosening connection and provides reliable sealing performance for heavy-duty assemblies.
As a source factory, T&Y Hardware supplies flange bolts with strict quality control to ensure consistent structural strength and toughness. With our stable production capacity and factory-direct pricing, we are ready to provide reliable fastening solutions and become your ideal partner for long-term cooperation.
| Specifications & Ordering Details | Metric | Imperial / Inch |
| Size Range (Diameter) | M5 to M20+ | 1/4″ to 3/4″ |
| Carbon Steel Grades | High Tensile 8.8, 10.9, 12.9 | Grade 5, Grade 8 |
| Stainless Steel Grades | A2-70 (SS304), A4-80 (SS316) | 18-8, 316 Stainless Steel |
| Thread Types | Metric Coarse / Fine Pitch | UNC, UNF (Coarse & Fine Thread) |
| Manufacturing Standards | DIN 6921, ISO 4161, ISO 21670 | ASME / ANSI B18.2.1 |
| Surface Finishes | Plain, Zinc Plated, Hot-Dip Galvanized (HDG), Black Oxide, Dacromet, Geomet | |
| MOQ (Min. Order Quantity) | Low MOQ / Negotiable for sample requests and initial trial orders | |
| OEM / ODM Service | Fully Supported: Custom lengths, special thread pitches, non-standard head dimensions, and manufacturing based on your technical drawings. |
T&Y Flange Bolts: Multi-Material Solutions for Industrial Applications
To meet varying engineering environments, T&Y Hardware offers flange bolts in a wide range of industrial-grade materials. Our product line includes corrosion-resistant stainless steel, high-tensile carbon steel, electrically conductive brass, and lightweight, high-strength titanium alloys.
Whether your project demands extreme durability, chemical resistance, or weight reduction, we have the right material to ensure joint integrity. Contact us today with your requirements, and our team will provide professional technical support and factory quotes within one working days.
Stainless Steel Flange BoltsMaterial：SS201, 202, 301, 302,303,304,316,316L, 347, 410,416, etc
Carbon Steel Flange BoltsMaterial：C1006, C1008, C1010, C1018A, C1022, C1035K, C1045K.etc
Titanium Flange BoltMaterial：TAD, TA1,TA2, TA3, TA4, TA5, TA6, TA7, TA8, TB2 ,TC1-TC10 etc.
Premium Flange Bolts: Diverse Head Styles for Every Industry
On the basis of traditional flange bolts, some products with special specifications have been added, covering variants of various driving methods, such as cross grooves and flat grooves, as well as special designs, such as serrated flange face bolts and flat shoulder flange bolts. At the same time, we also provide a variety of head-type options, such as Allen heads and 12-point flanges, to meet the needs of different application scenarios.
The external hex drive design can withstand extremely high assembly torque, ensuring a secure connection.
Size：M3, M4, M5, M6, M8, M10, M12, M16, M18, M20
Length: 10mm-200mm
Also called a socket head flange screw, the cylindrical head has a ring of flange.
Size：M3, M4, M5, M6, M8, M10，M12
Length: 5mm-60mm
Also called the external torx screw, the 12-point external torx screw can withstand greater torque.
Size：M5, M6, M8
Length: 20 mm-60 mm
Why Choose T&Y hardware flange bolt?
Full Product Range: We offer a complete line of standard flange bolts and flange screws.
Ready-to-Ship Stock: Large inventory available for most standard items to ensure fast delivery.
OEM / ODM Customization: Full support for custom sizes, specific materials, tailored packaging, logo printing, and coloring.
Technical Support: Experienced engineers and sales teams are available throughout the business day to solve your technical challenges.
Fast Quotations: We provide professional quotes and engineering responses within one working day.
- Our certificate
ISO 9001 ISO45001 ISO14001 ROHS
Related Product
Under normal circumstances, flange bolts do not need to be matched with washers because the flange itself can play a function similar to washers, dispersing loads and preventing loosening. If there are special sealing requirements, gaskets can be added.
Flange bolts are widely used for automobile manufacturing, bathroom toilet accessories, pipe fixing, mechanical assembly, building construction, and personal DIY.
After the flange bolts are disassembled, if the threads, bolt heads, and shanks are undamaged (without cracks), they can be reused.
Stainless steel flange bolts have an inherent corrosion-resistant surface, making them suitable for environments such as humidity or acid-base corrosion, with a neat appearance that requires no additional coating.
Usually, the T&Y hardware package is in bulk in a 25kg carton then in a pallet. if you need a small package with your design, we also can do it per your need
Yes, T&Y Hardware QC Team Testing From Raw Material Coming, Half And Finished Product Testing
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