Inconel Washers & Inconel Grades Built For Extreme Heat, Salt & Acid
1093°C Oxidation Limit
Nickel-chrome heats keep their shape in furnace heat.
Cryogenic-Tough
Stays ductile at liquid-nitrogen cold, no brittle break.
Chloride & Acid Proof
Fights pitting, crevice attack and stress cracking.
Heat-Wise Traceability
Every lot ties back to a mill heat and MTC.
M2 To M33 Ready
Flat, lock, star and conical sizes on the shelf.
Inconel Washers At A Glance
- 1Range: Flat, Spring, Lock, Star, Conical, Tab, Square
& Ogee - 2Sizes: M2 To M33 Metric, Custom Inch On Drawing
- 3Material Codes: ASTM B166, B443, B446, B637
- 4Grades: Inconel 600, 625, 718, X-750 & Incoloy
800H, 825 - 5Forms: Punched, Machined & Formed Spring
Washers - 6Service: Offshore, Refinery, Power, Aerospace &
Chemical
Or call our Mumbai office: +91 22 6743 7134 •
Heat-wise MTC as per EN 10204 3.1 with every lot
Buyers pick Inconel Washers when bolted joints face heat, salt and acid. Every Inconel Spring Lock Washer keeps preload steady during repeated thermal cycles. Refineries choose Inconel Alloy Flat Washer sets for hot flange bolting. Marine crews trust Incoloy Alloy Plain Washer stock against chloride attack.
Custom Inconel Conical Washer and Inconel Flat Spring parts follow your drawing. Each ASTM B166 Inconel Machine Washer lot ships with heat-wise test certificates.
Mumbai · Inconel Washers Exporter
Inconel Washers – Load-Holding Hardware For Hot, Corrosive & Cryogenic Bolting
Ganpat Industrial punches, machines and certifies flat, spring, lock, star, conical and
square washers for fabricators who cannot afford a joint that relaxes in service. Ship-ready to the GCC,
Africa, Europe and the Americas.
- ✓ISO 9001:2015
- ✓EN 10204 3.1 MTC
- ✓ASTM Nickel Alloy Stock
- ✓SGS / BV / TUV Inspection
High-Temperature ASTM B166 Inconel Spring Washers Manufacturer in India with Cryogenic to 1093°C Service Range
Inconel Washers Specification & Material Grades
Inconel Star Washer UNS Numbers
- Inconel 600 – N06600
- Inconel 625 – N06625
- Inconel 718 – N07718 / X-750 – N07750
- Incoloy 800H – N08810 / 825 – N08825
Inconel Spring Was Size Envelope
- Metric M2 To M33
- Inch #2 To 1-1/2 Inch
- Thickness 0.3 To 5 mm & Above
- Any OD / ID On Drawing
Inconel Square Washer Dimension Standards
- ISO 7089 / 7090 / 7092 / 7093
- DIN 125 / 9021 / 127 / 6796
- ASME B18.22.1 & B18.21.1
- DIN 2093 Disc Springs
Inconel Punched Washer Raw Material Form
- ASTM B166 – 600 Bar & Wire
- ASTM B443 / B446 – 625 Sheet & Bar
- ASTM B637 – 718 / X-750 Bar
- Strip & Wire For Formed Springs
Inconel Star Washer Finish & Coating
- Pickled / Bright Annealed
- Polished Or Ground Faces
- PTFE Coat, Low-Temp Duty
- Zinc Coat, Ambient Duty
Inconel Lock Washer Traceability
- Heat Number On Every Lot
- Grade & Size Tag On Packs
- EN 10204 3.1 / 3.2 MTC
- PMI Report Before Dispatch
ASTM B166 Inconel Flat Washer Size Chart M2 To M33
Metric flat washer sizes for Inconel 625 stock, punched or machined to tolerance.
| Bolt Size | Inside Ø d1 (mm) | Outside Ø d2 (mm) | Thickness h (mm) | Weight kg / 1000 pcs |
|---|---|---|---|---|
| M2 | 2.2 | 5 | 0.3 | 0.04 |
| M2.5 | 2.7 | 6 | 0.5 | 0.10 |
| M3 | 3.2 | 7 | 0.5 | 0.13 |
| M4 | 4.3 | 9 | 0.8 | 0.33 |
| M5 | 5.3 | 10 | 1 | 0.48 |
| M6 | 6.4 | 12 | 1.6 | 1.09 |
| M8 | 8.4 | 16 | 1.6 | 1.97 |
| M10 | 10.5 | 20 | 2 | 3.84 |
| M12 | 13 | 24 | 2.5 | 6.74 |
| M14 | 15 | 28 | 2.5 | 9.26 |
| M16 | 17 | 30 | 3 | 12.15 |
| M18 | 19 | 34 | 3 | 15.81 |
| M20 | 21 | 37 | 3 | 18.45 |
| M22 | 23 | 39 | 3 | 19.73 |
| M24 | 25 | 44 | 4 | 34.76 |
| M27 | 28 | 50 | 4 | 45.50 |
| M30 | 31 | 56 | 4 | 57.67 |
| M33 | 34 | 60 | 5 | 81.00 |
Inconel Alloy Flat Washer Weight Chart Per 1000 Pcs
Quick weights for freight and costing, per 1000 pieces.
M6 Washer
1.09 kg
per 1000 pcs · 12 × 6.4 × 1.6 mm
M8 Washer
1.97 kg
per 1000 pcs · 16 × 8.4 × 1.6 mm
M10 Washer
3.84 kg
per 1000 pcs · 20 × 10.5 × 2 mm
M12 Washer
6.74 kg
per 1000 pcs · 24 × 13 × 2.5 mm
M16 Washer
12.15 kg
per 1000 pcs · 30 × 17 × 3 mm
M20 Washer
18.45 kg
per 1000 pcs · 37 × 21 × 3 mm
M24 Washer
34.76 kg
per 1000 pcs · 44 × 25 × 4 mm
M30 Washer
57.67 kg
per 1000 pcs · 56 × 31 × 4 mm
Weight Formula
- π/4 × (OD² − ID²) × T × Density
- Result in mm³ × g/cm³ ÷ 1000 = grams
Grade Correction
- Inconel 600 – multiply by 1.00 (8.47 g/cm³)
- Inconel 718 – multiply by 0.97 (8.19 g/cm³)
Freight Planning
- Sum weight per 1000 pcs for shipment
- Add 8-10% for wooden box & tags
Inconel Lock Washer, Star & Conical Types Available
We remain a dependable Inconel Washers Supplier in India for stock and drawing-based orders.
Inconel Spring Lock Washer
Spring Lock
Inconel External Tooth Washers
External Tooth
Inconel Lock Washer
Lock
Inconel Alloy Sealing Washer
Sealing
Inconel Alloy Flat Washer
Flat
ASTM B166 Inconel Split Washer
Split
Inconel Star Washer
Star
Inconel Conical Washer
Conical
Also stocked or made to drawing:
Not Sure Which Washer Suits Your Joint?Share bolt size, media and temperature – we match type and
grade.
Best Incoloy Alloy Plain Washer Grade To Pick
Inconel 600
- Best in oxidising heat & caustic
- Furnace, nuclear & heat-treat fixtures
- Not age-hardenable
Inconel 625
- All-round seawater & chloride pick
- High fatigue & pitting resistance
- Offshore & subsea bolting
Inconel 718
- Age-hardened, highest strength
- High-preload & disc-spring duty
- Useful up to about 704°C
Inconel X-750
- Spring & lock washer favourite
- Resists stress relaxation when hot
- Aerospace & turbine hardware
Incoloy 800H
- Creep-rupture strength in furnaces
- Petrochemical & reformer tie-ins
- Carburisation resistant
Incoloy 825
- Strong in sulphuric & phosphoric acid
- Sour-service & pickling lines
- Good chloride SCC resistance
Weekly Delivery Of Inconel Washer In Below Countries
As an Inconel Washers Supplier in India, we dispatch fast-moving sizes on a weekly cycle.
| Export To | Countries | Continent | Shipping Time | Ports |
|---|---|---|---|---|
Qatar |
Qatar | Asia | 7 Days | Mesaieed Port |
Egypt |
Egypt | Africa | 18 Days | Abu Qir |
Inconel Washers Temperature Limits By Grade
From liquid-nitrogen cold to red-hot furnace ducts.
Inconel 600
1093°C
Oxidation-resistance ceiling in air
Inconel 625
982°C
Upper range for structural use
Inconel 718
704°C
Age-hardened strength limit
Inconel X-750
650°C
Spring duty, low relaxation
Inconel Industrial Washer Chemical Composition
Inconel 600 (N06600)
- Ni 72.0 min
- Cr 14.0-17.0
- Fe 6.0-10.0
- C 0.15 max
- Mn 1.0 max
- Cu 0.5 max
Inconel 625 (N06625)
- Ni 58.0 min
- Cr 20.0-23.0
- Mo 8.0-10.0
- Nb+Ta 3.15-4.15
- Fe 5.0 max
- C 0.10 max
Inconel 718 (N07718)
- Ni 50.0-55.0
- Cr 17.0-21.0
- Nb 4.75-5.50
- Mo 2.80-3.30
- Ti 0.65-1.15
- Fe Balance
Inconel X-750 (N07750)
- Ni 70.0 min
- Cr 14.0-17.0
- Fe 5.0-9.0
- Ti 2.25-2.75
- Nb+Ta 0.70-1.20
- Al 0.40-1.00
Incoloy 800H (N08810)
- Ni 30.0-35.0
- Cr 19.0-23.0
- Fe 39.5 min
- C 0.05-0.10
- Al 0.15-0.60
- Ti 0.15-0.60
Incoloy 825 (N08825)
- Ni 38.0-46.0
- Cr 19.5-23.5
- Mo 2.5-3.5
- Cu 1.5-3.0
- Ti 0.6-1.2
- Fe 22.0 min
Running Above 700°C Or Below −196°C?Tell us load and cycle – we recommend the right
alloy.
Inconel Flat Spring Mechanical Properties
Tensile strength, yield and elongation at room temperature.
Incoloy 800H
450 MPa
Yield 170 ·
30% El.
Inconel 600
550 MPa
Yield 240 ·
30% El.
Incoloy 825
586 MPa
Yield 241 ·
30% El.
Inconel 625
827 MPa
Yield 414 ·
30% El.
Inconel X-750 (Aged)
1140 MPa
Yield 725 ·
20% El.
Inconel 718 (Aged)
1275 MPa
Yield 1034
· 12% El.
ASTM B166 Inconel Washers Equivalent Grades
UNS (USA)
- Inconel 600 – N06600
- Inconel 625 – N06625
- Inconel 718 – N07718
- X-750 – N07750
- Incoloy 800H – N08810
- Incoloy 825 – N08825
Werkstoff Nr. (Germany)
- 600 – 2.4816
- 625 – 2.4856
- 718 – 2.4668
- X-750 – 2.4669
- 800H – 1.4958
- 825 – 2.4858
JIS (Japan)
- Inconel 600 – NCF 600
- Inconel 625 – NCF 625
- Incoloy 800H – NCF 800H
- Incoloy 825 – NCF 825
Inconel Punched Washer Standards & Norms
ISO 7089 / ISO 7090
Plain washers, normal series, grade A; 7090 adds a chamfer
Metric Flat
ISO 7092 / ISO 7093-1
Small series and large series plain washers
Metric Flat
DIN 125 / DIN 9021
Flat washer and wide-OD washer for general use
DIN Flat
ASME B18.22.1
Inch plain washers in narrow, regular and wide types
Inch Flat
DIN 127 B / ASME B18.21.1
Spring lock washers, metric and inch
Lock
DIN 6796 / DIN 2093
Conical spring washers and Belleville disc springs
Conical
DIN 6797 / DIN 6798
External tooth and serrated lock washers
Star / Tooth
Monthly Delivery Of Inconel Washer In Below Countries
Every batch reflects our standing as an Inconel Washers Manufacturer in India.
| Export To | Countries | Continent | Shipping Time | Ports |
|---|---|---|---|---|
Morocco |
Morocco | Africa | 45 Days | Nador |
Peru |
Peru | South America | 45 Days | Chancay |
Buy Inconel Square Washer in M02 to M33 Size with PTFE/Zinc Coating for Offshore & Petro-Chemical Applications
Inconel External Tooth Washers Application Industries
Refinery & Petrochemical Flanges
Offshore & Subsea Bolting
Gas Turbine & Power Casings
Aerospace Engine Hardware
Chemical Reactor Joints
Nuclear Plant Fasteners
Furnace & Heat-Treat Fixtures
Desalination & Seawater Lines
Inconel Alloy Star Washer Finish & PTFE/Zinc Coating
Pickled Matt
Uniform grey skin after acid pickling
Bright Annealed
Clean, oxide-free surface for tight seating
Ground / Polished
Flat faces for even load spread
PTFE / Zinc Coated
Low-friction torque or ambient corrosion cover
PTFE and zinc coats suit low-temperature duty only. Hot service washers stay uncoated.
How An ASTM B166 Inconel Machine Washer Is Made ?
Heat & Grade Selection
Bar, strip or sheet picked against its mill certificate
Blank, Pierce Or Turn
Punched from strip, or CNC-turned for thick sections
Form & Heat Treat
Spring shapes formed, then solution annealed or aged
Deburr & Finish
Tumbled, ground or coated to the ordered finish
Inspect & Mark
Size, hardness and PMI checked before tagging
Testing Methods For Inconel® Alloy Ogee Washer
PMI Analysis
Handheld analyser confirms Ni, Cr, Mo before packing
Dimensional Check
ID, OD and thickness gauged against the standard
Hardness Test
Rockwell readings verify heat-treat condition
Load-Deflection
Spring and conical washers checked for rated load
Mill Lot Tensile
Yield, tensile and elongation from source lot
IGC Test (ASTM G28)
Intergranular corrosion check on request
Need Third-Party Witnessed Testing?SGS, Bureau Veritas or TUV inspection arranged at our works.
Documents Issued With Inconel Washers Orders
Mill Test Certificate As Per EN 10204
Chemistry, mechanical results and heat number travel with every lot, ready for buyer and
inspector review.
Inconel Square Washer Price Factors
Firm Line-Item Price In 24 HoursSend grade, size, type and quantity.
Inconel Spring Washer HSN Code & GST Rate
HSN Heading
7508
Other articles of nickel
Tariff Item
75089090
Nickel & nickel alloy articles
GST Rate
18%
On domestic supply invoices
Exports
Zero-Rated
Under LUT, no IGST charged
Confirm classification with your customs broker for your exact alloy and form.
ASTM B166 Inconel Split Washer Vs Stainless Steel Washers
Inconel Washer
- Cryogenic to 1093°C, grade-dependent
- Seawater pitting & chloride SCC resistant
- Holds preload in hot cycling
- Longer life in acid and sour media
Stainless 316 Washer
- Softens and scales at lower heat
- Chloride SCC risk above about 60°C
- Fine for mild, ambient duty
- Lower price, shorter life when harsh
Packing & Export Of Inconel Alloy Sealing Washer
Every export lot leaves tagged, documented and moisture-safe.
Wooden Box & Carton Packing
Grade & Heat Number Tags
VCI Or Poly Bag Per Lot
FCL / LCL Sea & Air Freight
Frequently Asked Questions
What is the price of Inconel Washers per kg?
Price depends on grade, size, quantity and finish; send your requirement for a quick quote.
Which sizes are available in Inconel Alloy Flat Washer?
We supply metric sizes M2 to M33, plus custom inch sizes on your drawing.
What is the HSN code for Inconel Spring Washer?
HSN 7508 (tariff item 75089090) applies, with 18 percent GST on domestic supply.
What temperature can Inconel Lock Washer handle?
Inconel 600 resists oxidation to about 1093°C; grade and load decide safe limits.
Do you offer test certificates with Inconel Star Washer?
Yes, every lot ships with EN 10204 3.1 certificate; 3.2 available on request.
We Collaborate With Traders in the Following country
| Regions | Country |
|---|---|
| South Carolina | USA |
| North America | USA, Canada, Mexico |
| South America | Brazil, Argentina, Colombia |
| North Africa | Egypt, Morocco, Algeria |
| West Africa | Nigeria, Ghana, Senegal |
| East Africa | Kenya, Ethiopia, Tanzania |
| Middle East | Saudi Arabia, Iran, Iraq |
| South Asia | India, Pakistan, Bangladesh |
| East Asia | China, Japan, South Korea |
| Melanesia | Fiji, Papua New Guinea |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA