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by Tubotech Alloys INC
There are several high-performance fastening solutions that we at Tubotech, a leading piping and tubing manufacturing company in India offer your business. One prime example is high-quality Hastelloy c276 fasteners. We have engineered them with such ‘Precision’ that they provide ‘High Corrosion Resistance’ and ‘Durability’ even when used under a hostile environment.
More importantly, we have designed Hastelloy c276 fasteners using a high-quality ‘Nickel-Molybdenum-Chromium’ superalloy. Hence the component is capable of resisting strong oxidizers, reducing agents, and chloride-rich atmospheres.
Our major goal at Tubotech, a top piping and tubing manufacturing company in India is to offer your business Hastelloy c276 fasteners which comply with international standards. These include ASTM B574, B574M, DIN, and ISO. Also, we seek to ensure that our fastening solutions provide for your business long-term performance, safety, and durability.






There are several specifications details that you need to understand about Hastelloy c276 fasteners. They are given in the table below:
| Specification | Details |
|---|---|
| Material Grade | Hastelloy C276 (UNS N10276) |
| Standards | ASTM B574, ASME SB574, DIN, ISO, ANSI, BS |
| Form Available | Bolts, Nuts, Screws, Washers, Studs, Threaded Rods |
| Size Range | M3 to M56 / 3/16” to 2” |
| Length Range | 6 mm to 300 mm / ¼” to 12” |
| Thread Types | Metric (Coarse/Fine), UNC, UNF, UNEF |
| Surface Finish | Bright, Passivated, PTFE Coated, Black Oxide (on request) |
| Standards Followed | DIN 933 / 931 / 934 / 125 / 975, ISO 4017 / 4032 / 4762 |
| Temperature Range | -196°C to +1093°C |
| Density | 8.89 g/cm³ |
| Hardness | ≤ 100 HRB (Annealed) |
| Tensile Strength | ≥ 690 MPa (Min) |
| Yield Strength (0.2%) | ≥ 283 MPa (Min) |
| Elongation | ≥ 40% |
| Corrosion Resistance | Excellent in oxidizing and reducing environments |
| Compliance | NACE MR0175 / ISO 15156, PED 2014/68/EU |
| Certification | EN 10204 3.1 / 3.2, Mill TC, Raw Material Traceability |
It is the chemical contents that makes Hastelloy c276 fasteners strong and durable. They are given in the table below:
| Element | Composition (% by Weight) |
|---|---|
| Nickel (Ni) | Balance (approx. 57%) |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Chromium (Cr) | 14.5 – 16.5 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Cobalt (Co) | ≤ 2.5 |
| Manganese (Mn) | ≤ 1.0 |
| Vanadium (V) | ≤ 0.35 |
| Silicon (Si) | ≤ 0.08 |
| Carbon (C) | ≤ 0.01 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
There are many mechanical properties of Hastelloy c276 fasteners that you need to understand. They are as given below:
| Property | Value |
|---|---|
| Tensile Strength (min) | 690 MPa (100 ksi) |
| Yield Strength (0.2% offset) | 283 MPa (41 ksi) |
| Elongation (in 50 mm) | ≥ 40% |
| Hardness (Rockwell B) | ≤ 100 HRB |
| Modulus of Elasticity | ~205 GPa (29.7 x 10³ ksi) |
| Density | 8.89 g/cm³ |
| Melting Range | 1325 – 1370°C (2417 – 2498°F) |
| Impact Strength | High – excellent toughness at all temps |
| Fatigue Strength | Good, especially in corrosive environments |
| Creep Resistance | Excellent at elevated temperatures |
There are six types and several subtypes of Hastelloy c276 fasteners available. They are as listed below:
Hastelloy c276 fasteners are available in many ‘Sizes’ depending on ‘Types’. They are given below:
| Type | Metric Sizes | Imperial Sizes | Length Range |
|---|---|---|---|
| Hex Bolts / Screws | M3 to M56 | 3/16″ to 2″ | 6 mm to 300 mm / ¼” to 12″ |
| Socket Head Screws | M3 to M30 | #6 to 1 ½” | Up to 150 mm / 6″ |
| Stud Bolts / Rods | M6 to M48 | ¼” to 1 ½” | Up to 3 meters / 10 ft |
| Type | Metric Sizes | Imperial Sizes |
|---|---|---|
| Hex / Heavy Hex | M3 to M56 | 3/16″ to 2″ |
| Lock / Nylock Nuts | M4 to M30 | #10 to 1 ½” |
| Flange / Dome Nuts | M5 to M36 | ¼” to 1 ½” |
| Type | Inner Diameter (ID) | Outer Diameter (OD) | Thickness Range |
|---|---|---|---|
| Flat / Spring Washers | M3 to M56 | 6 mm to 100 mm | 0.5 mm to 5 mm |
‘Dimensions and Density’ are two factors that help determine the weight of different Hastelloy c276 fasteners. They are given in the table below:
| Size (Dia x Length) | Approx. Weight (grams) |
|---|---|
| M6 x 20 mm | 7.5 g |
| M8 x 30 mm | 16.5 g |
| M10 x 40 mm | 33 g |
| M12 x 50 mm | 56 g |
| M16 x 60 mm | 110 g |
| M20 x 80 mm | 200 g |
| M24 x 100 mm | 335 g |
| Size | Approx. Weight (grams) |
|---|---|
| M6 | 2.5 g |
| M8 | 5.1 g |
| M10 | 10 g |
| M12 | 17.4 g |
| M16 | 33.8 g |
| M20 | 56 g |
| M24 | 80 g |
| Size | Approx. Weight (grams) |
|---|---|
| M6 | 1.5 g |
| M8 | 2.8 g |
| M10 | 4.6 g |
| M12 | 6.5 g |
| M16 | 10.7 g |
| M20 | 17.5 g |
| Diameter | Weight per Meter (kg) |
|---|---|
| M6 | ~0.25 kg |
| M8 | ~0.40 kg |
| M10 | ~0.62 kg |
| M12 | ~0.89 kg |
| M16 | ~1.57 kg |
| M20 | ~2.45 kg |
| M24 | ~3.53 kg |
Hastelloy c276 fasteners are strong and durable.Hence they are used in a wide range of industrial applications.
There are many reasons why you need to choose us at Tubotech, a top piping and tubing manufacturing company in India as a reliable supplier for buying quality Hastelloy c276 fasteners. They are given below:
Choose Tubotech for your subsequent project concerning ASTM A105 instrument fittings and benefit from reliability and quality. Whether your requirement is small batch or bulk export, our technical institution is here to help you.
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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