BUMAX® : Leading Specialist in High-Quality Stainless Steel Fasteners.
BUMAX® is the brand of stainless steel fasteners recognized as the strongest in the world. It meets the demands of professional customers in the most challenging industrial applications. The Bumax® 88 and Bumax® 109 ranges are complemented by the high-performance Bumax 129 classes.
As a true technical and logistical partner for users, TDI has been systematically stocking, distributing, and recommending BUMAX® for many years.
Bumax® stainless steel fasteners possess properties that make them an excellent choice for a wide range of applications. With many years of experience, Bumax is recognized as a reliable and durable solution for your projects requiring enhanced corrosion resistance, as well as thermal and mechanical resistance, ensuring a long service life.
Bumax® Product Range
BUMAX Hard Self-Tapping Screw
The BUMAX® Hard is a self-tapping screw specifically designed to easily penetrate stainless steel sheets, even in corrosive environments.
Its exceptional surface hardness, equivalent to that of the BUMAX® 88 model, ensures optimal performance and a long service life.
It is the ideal solution for fastening and drilling metal sheets that require both robustness and acid resistance.
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BUMAX Lock Security Nut
The all-metal BUMAX® Lock security nut is designed to provide a secure and durable hold in demanding applications. Available in BUMAX® 88 quality, it features a thread profile specifically designed to optimize tightening.
This design allows for even distribution of stresses across the entire thread, ensuring a balanced load distribution and improved stability of the assembly.
Unlike some self-locking nuts that require a drag torque, the BUMAX® Lock is easy to install without excessive resistance, while ensuring reliable long-term fastening.
BUMAX Countersunk Screw
BUMAX® offers a rigorously designed range of countersunk screws that comply with ISO 10642 standards, ensuring a perfect fit with surfaces while providing a strong and aesthetic fastening.
Key Features:
- Standardized Design: Adherence to ISO 10642 dimensions and tolerances, ensuring compatibility and quality.
- Careful Finish: The countersunk head allows for flush installation, minimizing any risk of snagging or interference.
- BUMAX Reliability: Like the rest of their range, these screws are designed to provide robustness, durability, and performance in demanding environments.
BUMAX Hexagonal Nut
The Bumax hexagonal nut is an essential component in the field of fasteners, offering superior quality and a wide range of dimensions and grades.
In accordance with ISO 4032 standards, these nuts are designed to ensure optimal strength and increased durability, making them ideal for demanding applications in various sectors such as energy, construction, and maritime industry.
BUMAX Washer
BUMAX washers are essential fastening elements designed to provide optimal performance in various industrial applications.
Manufactured according to ISO 7089 and ISO 7093 standards, these washers are available in a variety of dimensions and materials, ensuring adaptability to different needs.
Key Features:
- High-Quality Materials: The washers are made from stainless steel, ensuring excellent corrosion resistance and increased durability.
- Manufacturing Standards: Compliant with international standards, they guarantee high reliability and performance in demanding environments.
- Varied Applications: Ideal for sectors such as energy, construction, and maritime industry, these washers are designed to support significant loads while preventing wear on contact surfaces.
BUMAX Hex Socket Screw
BUMAX® SDX 109 fasteners are made from duplex stainless steel 1.4410 (UNS S32750), known for its exceptional corrosion resistance and mechanical strength.
TDI offers BUMAX® SDX 109 bolts in stock with dimensions ranging from M6 to M12, providing mechanical strength equivalent to class 10.9. Upon request, other dimensions and strength categories, up to 12.9, can be produced to meet your specific needs.
For applications requiring duplex stainless steel fasteners with a strength of 12.9, Bumax utilizes grade 1.4462 (UNS S32205), combining robustness and durability in demanding environments.
BUMAX Hexagonal Head Screw and Bolt
BUMAX hexagonal head screws and bolts are high-quality fastening elements designed to meet the strictest performance and durability requirements.
Made from stainless steel, these products are distinguished by their corrosion resistance and robustness, making them suitable for a variety of industrial applications.
Key Features:
- Manufacturing Standards: These fasteners comply with ISO standards, ensuring optimal quality and reliability.
- Variety of Dimensions: Available in a wide range of sizes and grades, Bumax hexagonal head screws and bolts can be tailored to specific needs.
- Diverse Applications: With their superior mechanical properties, these fasteners are ideal for sectors such as energy, construction, and maritime industry.
BUMAX Studs and Threaded Rods
BUMAX studs and threaded rods are robust fastening solutions designed to meet the diverse requirements of industrial applications.
Available in several standards, including DIN 938 and DIN 976 Form B, these products are distinguished by their superior quality and corrosion resistance.
Key Features:
- High-Performance Materials: Made from stainless steel, these studs and threaded rods offer exceptional durability, even in challenging environments.
- Customization: Bumax provides a wide range of standard dimensions and custom options, allowing products to be tailored to specific customer needs.
- Diverse Applications: Ideal for sectors such as energy, construction, and maritime industry, these fasteners ensure reliable performance and a long service life.
BUMAX Properties
- Corrosion: A range of products to ensure a reliable and durable fastening solution for every application and corrosive environment, with a molybdenum content exceeding 2.5%.
- Mechanical: Reduction of critical dimensions, clamping force, and tensile strength: BUMAX® offers strength classes ranging from steel class 8.8 to 16.9.
- Fatigue: All BUMAX® bolts are hardened by cold working and rolled at the threads to increase their resistance to fatigue and galling.
- Thermal: The resistance of BUMAX® fasteners to extreme temperatures is characterized by a wide thermal range, with service temperatures ranging from -269°C (4K) to 800°C.
BUMAX® Grades
Different grades of BUMAX® stainless steel are available for an optimal solution tailored to your needs.BUMAX® 88 and BUMAX® 109 are superior to standard A4 fasteners.
BUMAX® 109 uses the same material as BUMAX® 88; only the manufacturing process differs.
As a result, BUMAX® 109 offers greater strength and mechanical resistance compared to BUMAX® 88.
|
Désignation |
Nuance |
Dimensions mm |
Limite d'élasticité MPa |
Résistance à la traction MPa |
Allongement min mm |
% Mo |
Perméabilité magnétique |
PREN (PITTING EFFICIENT) |
|
A2 -70 Standard |
302, 303, 304 ... | - | 450 | 700 | 0.4 d | - | 1.8 | 19 |
|
A4-70 Standard |
316 | - | 450 | 700 | 0.4 d | 2-3 | 1.01 | 25 |
|
A4-80 Standard |
316 | - | 600 | 800 | 0.3 d | 2-3 | 1.015 | 25 |
|
Bumax 88 |
316L HiMo | M3-M36 | 640 | 800 | 0.3 d | 2.5 - 3 | 1.006 | 27 |
|
Bumax 88 (PED) |
316L HiMo | M6-M30 | 640 | 800 | 0.4 d | 2.5 - 3 | 1.006 | 27 |
| Bumax 109 | 316L HiMo | M6-M24 | 900 | 1000 | 0.2 d | 2.5 - 3 | 1.007 | 27 |
| Bumax SDX 109 | EN 1.4410 | M6-M24 | 900 | 1000 | 0.3 d | 4 | 100 | 42 |
| Bumax DX 129 | EN 1.4462 | M6-M24 | 1080 | 1200 | 0.3 d | 3.2 | 100 | 36 |
| Acier 8.8 | - | 640 | 800 | 0,12 | - | - | - | |
| Acier 10.9 | - | 900 | 1000 | 0,09 | - | - | - |
BUMAX® LIBRARY:
Discover our BUMAX® media library: product catalog, presentation brochure, and company information.
Access essential resources with a single click to learn about the brand.
Take advantage of comprehensive and up-to-date documentation to meet your professional needs.
