Phone
+91 9769961320Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004© Alrights reserved
by Tubotech Alloys INC
When your project needs power, reliability, and durability, 8.8 fasteners from Tubotech supply wonderful overall performance. Manufactured to satisfy the highest worldwide standards, our Grade 8.8 fasteners are ideal for vital load-bearing applications throughout construction, machinery, automotive, and engineering industries. Tubotech ensures that every piece is crafted with precision, offering unequalled great strength to help your hardest tasks.
Engineered from high-grade medium carbon steel and punctiliously warmth-treated for enhanced hardness and tensile power, our eight.8 fasteners face up to stressful mechanical stresses and vicious environments. They are available in a huge range of sizes, threads, and finishes—ensuring compatibility with numerous commercial structures and designs.
At Tubotech, we prioritize innovation and patron satisfaction, presenting fasteners that no longer handiest meet but exceed expectations for safety, performance, and durability. Whether you’re building infrastructures, manufacturing heavy systems, or assembling motors, our Grade 8.8 fasteners offer the relied on basis your paintings depend on.






| Property | Details |
|---|---|
| Material | Medium Carbon Steel, Quenched and Tempered |
| Grade | 8.8 (ISO 898-1 Standard) |
| Tensile Strength | 800 MPa (minimum) |
| Yield Strength | 640 MPa (minimum) |
| Hardness | 22–32 HRC |
| Size Range | M5 – M72 (Metric) |
| Surface Finish | Plain, Zinc Plated, Hot Dip Galvanized, Black Oxide |
| Thread Type | Metric Coarse / Fine Thread |
| Standards | ISO 898-1, DIN 931/933, ASTM A325 |
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.25 – 0.55 |
| Manganese (Mn) | 0.30 – 0.90 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | 0.15 – 0.35 |
| Iron (Fe) | Balance |
The carefully controlled chemical composition of 8.8 Fasteners ensures superior mechanical performance, durability, and resistance to wear and fatigue.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 800 MPa |
| Yield Strength | ≥ 640 MPa |
| Elongation (after fracture) | ≥ 12% |
| Hardness | 22–32 HRC |
| Impact Strength (ISO-V) | ≥ 27 Joules at –20°C |
These outstanding mechanical properties make 8.8 Fasteners a preferred choice for dynamic and static loads.
At Tubotech, we stock an extensive variety of 8.8 Fasteners suitable for diverse packages:
Each kind is synthetic to strict dimensional and mechanical standards, ensuring clean integration into crucial assemblies.
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
We deliver 8.8 Fasteners in a variety of dimensions to fulfill each venture requirement:
| Fastener | Size | Approximate Weight (per piece) |
|---|---|---|
| Hex Bolt | M10 × 50 mm | 30 grams |
| Hex Bolt | M16 × 100 mm | 125 grams |
| Hex Bolt | M20 × 150 mm | 320 grams |
| Hex Nut | M12 | 12 grams |
| Flat Washer | M16 | 7 grams |
| Threaded Rod | M20 × 1 meter | 2.4 kilograms |
Note: Weights vary depending on finish and manufacturer tolerance.
8.8 Fasteners are regarded for their advanced tensile energy, making them perfect for excessive-stress environments, consisting of:
Construction: Bridges, skyscrapers, industrial homes
Automotive: Chassis frames, suspension structures, engine additives
Railway: Rail tracks, locomotives, coaches
Heavy Machinery: Excavators, cranes, mining device
Oil and Gas: Pipelines, refineries, offshore systems
Wind and Solar Energy: Tower mounting, panel installations
Shipbuilding: Marine systems, docks, ship interiors
General Engineering: Fabrication, manufacturing units, metal systems
Our 8.8 fasteners are trusted throughout industries where failure is not an alternative.
At Tubotech, we don’t just deliver fasteners—we supply accept as true with precision, and reliability.
Here’s why we stick out:
Our 8.8 fasteners are made using carefully sourced medium-carbon metal and go through rigorous warmth treatment to ensure pinnacle-notch energy and sturdiness.
We adhere strictly to ISO, DIN, ASTM, and BS standards, providing full cloth traceability and take a look at certifications (EN 10204 3.1).
We keep a large, ready-to-ship inventory of 8.Eight fasteners in varied sizes, coatings, and styles for fast dispatch.
Need something special? Tubotech offers custom sizes, threading alternatives, and floor coatings tailor-made to your challenge needs.
Our streamlined production and distribution model enables us to offer a fine price-performance ratio without compromising best.
With sturdy logistics partnerships, we ensure timely deliveries, whether or not you want fasteners locally in India or internationally.
Tubotech’s skilled engineers assist you pick the proper fasteners and provide torque, preload, and set up steerage.
Get long lasting, high-power 8.8 Fasteners only from Tubotech! Contact us nowadays for quotations, technical datasheets, or bulk order inquiries.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.
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