Hastelloy Washers Manufacturer & Supplier in India
Unifit Fastener, as a reputable manufacturer and supplier of high-performance hastelloy washers that will be reliable and can withstand hard working conditions in industrial applications. Our washers are made using high-quality nickel-based alloys, and they have high corrosion, oxidation, and stress corrosion cracking resistance even at extreme temperatures and under the high-pressure conditions. This has seen them fit into the rigorous application in oil and gas, chemical processing, power plants and aerospace.
Our Hastelloy washers are available in common and popular grades of Hastelloy C 276, C 22, C 2000, X and B-2, each of which is chosen based on a given number of chemical and mechanical performance needs. These grades offer high resistance to acids, chlorides, and corrosive media, which will offer long-term stability and structural integrity in adverse service environments.
In Unifit Fastener, each washer is carefully machined to attain the exact dimension, smooth finish and constant load-bearing capability. We have a strict quality control process, which involves dimensional inspection and verification of material to ensure that every product is produced to the international standards and is to the specifications of customers.
We offer expert engineering services to meet our clients' special needs, such as non-standard sizes, thicknesses and grades. Our washers are manufactured with the latest methods and raw materials that are well sourced, thereby making them reliable to use with a long service life.
Unifit Fastener Hastelloy washers will reduce the rate of maintenance, increase the level of equipment security, and decrease the total operating expenses. They are offered in a versatile variety of grades and sizes so as to offer a reliable fastening solution to highly risky and critical environments where reliability is paramount.
Request QuoteTable of Contents
- What are Hastelloy Washers?
- Hastelloy Washer Grades
- Specification of Hastelloy Washers
- Send Your Enquiry
- Various Types of Hastelloy Washer
- Hastelloy Washer Dimension Chart (USS & SAE)
- Hastelloy Spring Washer Dimensions (Metric)
- Hastelloy Flat Washer Dimensions
- International Standards for Hastelloy Washers
- Approximate Weight Chart (Metric – per 100 Nos)
- Applications of Hastelloy Washers
- FAQs About Hastelloy Washers
What are Hastelloy Washers?
Hastelloy washers are nitrogen-based alloy (such as C22, C276, and X) high-performance fasteners that provide excellent performance during extreme corrosion, high temperature, pitting, and stress corrosion cracking; hence, Hastelloy washers are used in critical applications where standard stainless steel is not suitable in chemical processing, oil and gas, aerospace, and power generation. They provide consistent load transfer in the bolts and can withstand severe chemical and thermal environments.
Hastelloy Alloy Washers Supplier, Hastelloy Industrial Washer, Hastelloy Plain Washer, Hastelloy Alloy Star Washer, Hastelloy Washers Manufacturer in India, Hastelloy External Tooth Washers, Hastelloy Washers, Hastelloy Hex Washers, Hastelloy Spring Lock Washer, Hastelloy Washer Stockist, Hastelloy Conical Spring Washers, Hastelloy Alloy Dome Washer, Hastelloy Tab Washers, Hastelloy Washers Supplier in Mumbai, India, Hastelloy Alloy Washers, Hastelloy Washers Manufacturer.
Hastelloy Washer Grades
Specification of Hastelloy Washers
| Specification | Details |
|---|---|
| Size Range | M02 to M33, with custom sizes available on request |
| Length Range | 3 mm to 200 mm |
| Manufacturing Standards | ISO, ASTM, DIN, JIS, IS, GB, BS, and other recognized international standards |
| DIN Specifications | BS DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN 916, DIN 7982, DIN 7985, DIN 913 |
| Dimensional Standards | ANSI / ASME B18.22.1, ASME B18.22M, ASME B18.21.1, ASME B18.2.6M |
| Thread Form Standards | NPT, UNS, UNF, UNC, UNEF, NPTF |
| ISO & JIS References | ISO 4032, ISO 4033, ISO 4017, ISO 7380, applicable JIS standards |
| Thread Types | Metric, BSW, UNC, UNF, BSF, or as specified by the client |
| Available Washer Types | Flat Washer, Lock Washer, Split Washer, Sealing Washer, Machine Washer, Slot Washer, Star Washer, Flat Spring, Wire Spring |
| Certification | Dual certification compliant with ASTM and ASME standards |
Send Your Enquiry
Various Types of Hastelloy Washer
Hastelloy Square Washer
Hastelloy Spring Washer
Hastelloy Ogee Washer
Hastelloy Lock Washer
Hastelloy Flat Washer
Hastelloy Dome Washer
Hastelloy Washer Dimension Chart (USS & SAE)
| Size | USS ID (A) | USS OD (B) | USS Thk (C) | SAE ID (A) | SAE OD (B) | SAE Thk (C) |
|---|---|---|---|---|---|---|
| #2 | – | – | – | 3/32″ | 1/4″ | 0.020″ |
| #4 | – | – | – | 1/8″ | 5/16″ | 0.032″ |
| #6 | – | – | – | 5/32″ | 3/8″ | 0.049″ |
| #8 | – | – | – | 3/16″ | 7/16″ | 0.049″ |
| #10 | – | – | – | 7/32″ | 1/2″ | 0.049″ |
| #12 | – | – | – | 1/4″ | 9/16″ | 0.065″ |
| 1/4″ | 5/16″ | 0.734″ | 0.065″ | 9/32″ | 5/8″ | 0.065″ |
| 3/8″ | 7/16″ | 1″ | 0.083″ | 13/32″ | 13/16″ | 0.065″ |
| 1/2″ | 9/16″ | 1-3/8″ | 0.109″ | 17/32″ | 1-1/16″ | 0.095″ |
| 3/4″ | 13/16″ | 2″ | 0.148″ | 13/16″ | 1-15/32″ | 0.134″ |
| 1″ | 1-1/16″ | 2-1/2″ | 0.165″ | 1-1/16″ | 2″ | 0.134″ |
| 1-1/4″ | 1-3/8″ | 3″ | 0.165″ | – | – | – |
| 1-1/2″ | 1-5/8″ | 3-1/2″ | 0.180″ | – | – | – |
| 2″ | 2-1/8″ | 4-1/2″ | 0.213″ | – | – | – |
Hastelloy Spring Washer Dimensions (Metric)
| Nominal Size (mm) | Inner Dia (mm) | Outer Dia (mm) | Width (mm) | Thickness (mm) | Weight / 1000 (kg) |
|---|---|---|---|---|---|
| 3 | 3.1 | 6.2 | 1.3 | 0.8 | 0.11 |
| 6 | 6.1 | 11.8 | 2.5 | 1.6 | 0.83 |
| 10 | 10.2 | 18.1 | 3.5 | 2.2 | 2.53 |
| 16 | 16.2 | 27.4 | 5.0 | 3.5 | 8.91 |
| 20 | 20.2 | 33.6 | 6.0 | 4.0 | 15.20 |
| 24 | 24.5 | 40.0 | 7.0 | 5.0 | 26.20 |
| 30 | 30.5 | 48.2 | 8.0 | 6.0 | 44.30 |
| 36 | 36.5 | 58.2 | 10.0 | 6.0 | 67.30 |
| 48 | 49.0 | 75.0 | 12.0 | 7.0 | 123.00 |
| 52 | 53.0 | 83.0 | 14.0 | 8.0 | 320.00 |
Hastelloy Flat Washer Dimensions
| Bolt Size | USS OD | USS ID | USS Thickness | SAE OD | SAE ID | SAE Thickness |
|---|---|---|---|---|---|---|
| 1/4″ | 0.734″ | 0.312″ | 0.051–0.080″ | 0.625″ | 0.281″ | 0.051–0.080″ |
| 3/8″ | 1.000″ | 0.438″ | 0.064–0.104″ | 0.812″ | 0.406″ | 0.051–0.080″ |
| 1/2″ | 1.375″ | 0.562″ | 0.086–0.132″ | 1.062″ | 0.531″ | 0.074–0.121″ |
| 3/4″ | 2.000″ | 0.812″ | 0.122–0.177″ | 1.469″ | 0.812″ | 0.108–0.160″ |
| 1″ | 2.500″ | 1.062″ | 0.136–0.192″ | 2.000″ | 1.062″ | 0.108–0.160″ |
| 1-1/2″ | 3.500″ | 1.625″ | 0.153–0.213″ | 3.000″ | 1.625″ | 0.153–0.213″ |
International Standards for Hastelloy Washers
| Standard | Description |
|---|---|
| AS 1237.1 | Plain & small plain washers |
| ASTM F436 / F436M | Extra-thick & clipped washers |
| ANSI B18.22.1 | Type A & Type B plain washers |
| DIN 125 | Type A & Type B washers |
| ANSI B18.2.6 | Circular steel washers |
Approximate Weight Chart (Metric – per 100 Nos)
| Size | Plain Washer (kg) | Heavy Washer (kg) | Spring Washer (kg) |
|---|---|---|---|
| M6 | 0.11 | 0.11 | 0.08 |
| M10 | 0.39 | 1.00 | 0.25 |
| M16 | 1.06 | 3.40 | 0.89 |
| M20 | 1.64 | 5.80 | 1.52 |
| M24 | 3.11 | 13.50 | 2.62 |
| M30 | 5.05 | 16.50 | 4.43 |
| M36 | 8.73 | 25.50 | 6.73 |
| M48 | 28.40 | – | 12.30 |
Applications of Hastelloy Washers
- Chemical Processing Equipment : Used in reactors, heat exchangers, pipelines, and vessels handling highly corrosive acids and chemicals.
- Oil and Gas Industry : Suitable for offshore platforms, refineries, and drilling systems exposed to high pressure, temperature, and sour gas environments.
- Aerospace and Aviation : Applied in aircraft and aerospace components where strength, heat resistance, and reliability under stress are essential.
- Power Generation Plants : Used in thermal, nuclear, and renewable power facilities to maintain joint integrity under extreme heat and pressure.
- Marine and Offshore Applications : Ideal for seawater and coastal environments due to excellent resistance to saltwater corrosion.
- Pollution Control Systems : Installed in scrubbers, emission control units, and waste treatment equipment handling aggressive media.
- Pharmaceutical and Food Processing Equipment : Ensures corrosion resistance and cleanliness in controlled and hygienic operating environments.
- Petrochemical and Refining Industry : Used in high-temperature and chemically aggressive refining processes for long-term performance and safety.
FAQs About Hastelloy Washers
What is Hastelloy used for?
Hastelloy is primarily used in applications where extreme resistance to corrosion, high temperatures, and pressure is required. It is widely used in chemical processing plants, oil and gas equipment, heat exchangers, aerospace components, pollution control systems, and marine environments. Hastelloy performs exceptionally well in aggressive conditions involving acids, chlorides, and high-stress environments, making it a preferred material for critical industrial fasteners and washers.
Is Hastelloy the same as stainless steel?
No, Hastelloy is not the same as stainless steel. While both are corrosion-resistant alloys, Hastelloy is a nickel-based alloy, whereas stainless steel is iron-based with chromium as the main alloying element. Hastelloy offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in harsh chemical and high-temperature environments where stainless steel may fail.
What are the three types of washers?
The three most commonly used types of washers are flat washers, spring washers, and lock washers. Flat washers distribute load evenly and protect surfaces, spring washers provide tension and absorb vibration, and lock washers prevent fasteners from loosening under movement or dynamic loads.