Why Our Inconel Fasteners Stand Out in the Market?
PMI Verified Ni-Cr Heats
Every bar is spot-checked for nickel, chromium & molybdenum ratio before threading begins.
Forged To ASTM B166 Norms
Correct solution-anneal cycle keeps strength and corrosion resistance intact on every batch.
Hex, Stud & Allen Stock Ready
Bolts, nuts, studs and pins rolled to your thread class and length in one order.
Full Heat-Wise Traceability
Every fastener batch carries a heat number linked straight to its mill test certificate.
Ready Stock, Fast Dispatch
Fast-moving M6 to M64 sizes machined, marked and boxed within days of order confirmation.
Inconel Fastener Summary
- 1Fastener Family: Bolts, Nuts, Stud Bolts, Studs, Dowel Pins & Threaded Bar
- 2Size Coverage: M6 to M64 | 1/4″ to 2.1/2″ UNC / UNF
- 3Governing Standard: ASTM B166, ASTM B564, UNS N06600 / N06625 / N07718
- 4Surface Options: Hot Forged, Solution Annealed, Bright, Passivated
- 5Common Marking: Inconel 600, 625, 718, X-750, Inconel®
- 6Service Use: Aerospace, Oil & Gas, Marine, Power & Chemical Plant
Or call our Mumbai office: +91 22 6743 7134 • Inconel fastener batches dispatched with heat-wise MTC
Inconel fastener starts with certified UNS N06600, N06625, or N07718 bar stock. Complete heat traceability follows every material from melting through final threading. We forge, solution-anneal, inspect, and certify every Inconel Hex Bolts batch. Our range includes Inconel Bolts, Inconel Nuts, and Inconel Stud Bolts. Inconel alloys provide reliable strength for demanding turbine and wellhead applications. As experienced Inconel Fasteners Supplier in India, we fulfil urgent orders quickly. We supply Inconel Hex Bolts, Inconel Allen Bolt, and Threaded Bar. As a Recognised Inconel Fasteners Manufacturer in India, we serve global industrial buyers.
Mumbai · Nickel-Chromium Alloy Fastener Exporter
Inconel Fastener – Bolts, Nuts, Stud Bolts & Threaded Bar Exporter
Ganpat Industrial forges, threads and certifies Inconel Bolts, Inconel Nuts and Inconel Stud Bolts for engineers who cannot risk a stretched or corroded joint in turbine, wellhead, offshore and high-temperature piping assemblies across India, the GCC and Southeast Asia.
- ✓ISO 9001:2015
- ✓NACE MR0175 / ISO 15156
- ✓ASTM B166 & B564 Certified
- ✓Mill Test Certificate 3.1
- ✓Third-Party Inspection Approved
ASTM B166 Inconel Hex Head Bolt Manufacturer in India with MTC
Inconel Fasteners Specification
Inconel Hex Bolts & Inconel Allen Bolt Size Range
- Size: M6 – M64 (1/4″ – 2.1/2″ UNC/UNF)
- Inconel Hex Bolts & Inconel Allen Bolt, Full & Half Thread
- Length: 20mm to 500mm, custom on drawing
- Standard & metric plus custom sizes
ASTM B166 Inconel Hex Head Bolt Standard
- ASTM B166 Inconel Bar & Bolt Stock
- ASTM B564 / ASME SB564 Forged Fastener Reference
- ASME B18.2.1 Hex Bolt Dimension Match
- MSS SP-25 Marking Compliance
Inconel Stud Bolts & Inconel T Bolt Range
- Stud Bolt: M6 – M64, Full & Reduced Shank
- Solution Annealed & Pickled
- Continuous & Double-End Stud Thread
- Precision Rolled Or Cut Thread
Inconel Nuts, Inconel Acorn Nuts & Shoulder Nuts
- ASTM B166 Inconel Nut, Hex & Heavy Hex Style
- Inconel Acorn Nuts & Inconel Shoulder Nuts On Request
- Thread Class 2B / 6H Standard Fit
- Self-Locking & All-Metal Options
Inconel Alloy Industrial Threaded Bar
- Threaded Bar Length: Up To 3 Meters
- Full-Length Or Custom-Cut Thread
- UNC / UNF / Metric Coarse Thread
- PMI Tested Before Threading
Inconel Dowel Pins, J Bolt & Counter Sunk Bolt
- Inconel Dowel Pins Ground To H7 Tolerance
- Inconel J Bolt In L & U Hook Style
- Inconel Counter sunk Bolt, Flush-Fit Head
- Custom Drawing Match On Request
ASTM B166 Inconel Hex Head Bolt Weight Chart (Kg Per Piece)
Approximate weight for Inconel 625 hex bolts & stud bolts – confirm exact figure against your mill test certificate.
M12 x 50mm Hex Bolt
~0.08 kg/pc
Inconel 625, full thread
M16 x 60mm Hex Bolt
~0.16 kg/pc
Inconel 625, full thread
M20 x 70mm Hex Bolt
~0.32 kg/pc
Inconel 625, full thread
M24 x 80mm Stud Bolt
~0.58 kg/pc
Inconel 625, with 2 nuts
Weekly Delivery Of Inconel Fasteners In Below Countries
| Export To | Continent | Shipping Time |
|---|---|---|
Malaysia |
Asia | 10 Days |
Vietnam |
Asia | 10 Days |
Brazil |
South America | 45-60 Days |
Qatar |
Asia | 7 Days |
Do Inconel Bolts Need Anti-Seize? Galling Prevention Facts
Nickel Alloys Gall Easily
High friction between Inconel threads can seize the joint if run in dry
Anti-Seize Is Recommended
A nickel or copper-based anti-seize compound is advised on every install
Dry-Film Coating Also Works
Coated Inconel Bolts and Inconel Stud Bolts reduce galling without loose paste
Inconel Alloy Bolts HSN Code & GST Rate
| Product | HSN Code | GST Rate |
|---|---|---|
| Inconel Alloy Bolts, Nuts & Stud Bolts | 73181500 | 18% |
Inconel Fastener Price Per Kg – What Decides The Rate?
Get A Live Per-Kg Rate TodayShare your grade, thread size and quantity for quote.
Types Of Inconel Fasteners We Supply
As an active supplier to turbine, wellhead and offshore fabricators, we stock every Inconel fastener style listed below.
Inconel Bolts
ASTM B166
Inconel Nuts
ASTM B166
ASTM B166 Inconel Hex Head Bolt
ASME B18.2.1
Inconel Threaded Rod
Custom Length
Inconel Hex Bolts
Full / Half Thread
Inconel Stud Bolts
Continuous Thread
Inconel Dowel Pins
H7 Tolerance
Inconel® Alloy Dome Nuts
Acorn Style
Buy PMI Tested Inconel Alloy Industrial Threaded Bar in Metric Sizes for Oil and Gas
Application Of Inconel Bolts, Nuts & Threaded Bar
Reach out to our export desk, already shipping into these process sectors every month.
Gas Turbine & Aero-Engine Assemblies
Oil & Gas Wellhead Equipment
Chemical Processing Flange Joints
Marine & Offshore Platform Structures
Power Plant Boiler & Superheater Fittings
Furnace & Heat-Treatment Equipment
Cryogenic Valve & Pump Assemblies
Nuclear Reactor Internal Fastening
Thread Standards & Size Reference For Inconel Studs And Bolts
UNC Coarse Thread
1/4″-20 to 2″-4.5
Standard imperial coarse series
UNF Fine Thread
1/4″-28 to 2″-12
Fine pitch for vibration-prone joints
Metric Coarse
M6 to M64
ISO metric coarse pitch series
Metric Fine
M8x1 to M64x4
Reduced pitch for high-load flanges
Monthly Delivery Of Inconel Fasteners In Below Countries
| Export To | Continent | Shipping Time |
|---|---|---|
Saudi Arabia |
Asia | 7 Days |
Thailand |
Asia | 7 Days |
Indonesia |
Asia | 9 Days |
Philippines |
Asia | 14 Days |
Inconel Alloy Fasteners Testing Methods
Ganpat Industrial, a trusted Inconel Fasteners Supplier in India, runs every batch through these checks before dispatch.
Hardness Test
Confirms Rockwell / Brinell hardness stays within the specified grade limit
Every Batch
Flattening Test
Checks ductility of headed bolts under compression without cracking
Bolt Lots
Chemical Analysis – Spectro Test
Spectrometer reading verifies Ni, Cr, Mo & Fe against the grade chemistry
Every Heat
Intergranular Corrosion (IGC) Test
Confirms grain boundaries remain free of sensitization after heat treatment
On Request
Positive Material Identification (PMI)
Handheld alloy analyzer confirms grade on the finished fastener body
Every Order
Flaring Test
Verifies material can be flared without splitting on formed components
Rod & Bar
Micro & Macro Test
Microscopic and visual structure check rules out cracks, laps or seams
On Request
Chemical Composition Of Inconel Fasteners
Reference chemistry for the Inconel fastener grade family as per ASTM B166 / B564.
| Grade | Ni | Cr | Fe | Mo | Nb+Ta | Ti | Al | C |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 72 Min | 14.0-17.0 | 6.0-10.0 | – | – | – | – | 0.15 Max |
| Inconel 625 | 58 Min | 20.0-23.0 | 5.0 Max | 8.0-10.0 | 3.15-4.15 | 0.40 Max | 0.40 Max | 0.10 Max |
| Inconel 718 | 50.0-55.0 | 17.0-21.0 | Bal. | 2.80-3.30 | 4.75-5.50 | 0.65-1.15 | 0.20-0.80 | 0.08 Max |
| Inconel X-750 | 70 Min | 14.0-17.0 | 5.0-9.0 | – | 0.70-1.20 | 2.25-2.75 | 0.40-1.00 | 0.08 Max |
Need A Torque Value For A Non-Standard Size?Share bolt size, grade & joint condition – we calculate and confirm.
Mechanical Properties Of ASTM B166 Inconel Bolts
Tensile Strength
≥ 827 MPa
120 ksi Min, 625 Annealed
Yield Strength (0.2%)
≥ 414 MPa
60 ksi Min, 625 Annealed
Elongation
≥ 30%
High Ductility
Hardness (Max)
≤ 35 HRC
Annealed / Sour-Service Safe
Need A Certified Tensile & Hardness Report?Send size, quantity & standard for a free document review.
Inconel Fasteners Equivalent Grades
ASTM / UNS
- ASTM B166 Inconel Bar & Bolt Stock
- ASTM B564 Forged Fastener Reference
- UNS N06600 / N06625 / N07718 / N07750
- AMS 5665 / AMS 5666 Aerospace Reference
DIN / WNr
- WNr 2.4816 (Inconel 600)
- WNr 2.4856 (Inconel 625)
- WNr 2.4668 (Inconel 718)
- DIN 17752 / DIN 17753 Reference
BS / Trade Name
- BS 3076 NA14 / NA18 Reference
- Sold Globally As Inconel® Alloy Bolt & Inconel Alloy Nuts
- Often searched as Alloy 600 / 625 Fastener
Test Certification Of ASTM B166 Inconel Hex Head Bolt
Mill Test Certificate 3.1
Chemistry, hardness & tensile results traced to heat number
Every Order
PMI Test Report
Positive Material Identification confirming Ni, Cr & Mo content
On Request
Hydrogen Embrittlement Test
Verifies plated fasteners are free of hydrogen-related cracking risk
On Request
Corrosion Test Report
ASTM G28 pitting & intergranular results on request
On Request
Certificate Of Origin
For customs clearance & import duty processing
Export Orders
Need A Third-Party Witnessed Test Certificate?We coordinate SGS, Bureau Veritas or TUV inspection on request.
Surface Finish & Coating For Inconel Bolts And Nuts
As-Forged / Hot Rolled Blank
Base finish before final machining and thread rolling
Solution Annealed & Pickled
Acid pickling removes heat scale and restores the oxide film
Bright / Polished Finish
Smooth surface for visible flange and instrument-line joints
Dry-Film Lubricant Coating
Anti-galling coat for repeated make and break on high-torque joints
Passivated Finish
Chemical passivation strengthens the natural corrosion-resistant layer
Torque Chart For Inconel Hex Bolts & Stud Bolts
| Bolt Size | Torque – Dry (Nm) | Torque – Lubricated (Nm) |
|---|---|---|
| M8 | 24 | 18 |
| M10 | 48 | 36 |
| M12 | 84 | 63 |
| M16 | 205 | 155 |
| M20 | 400 | 300 |
| M24 | 690 | 520 |
Not Sure Which Inconel Grade Fits Your Joint?Share your process fluid & temperature – we confirm the right fastener grade.
Inconel Hex Bolt Vs Inconel Stud Bolt – Which To Choose?
Inconel Hex Bolt
- Single-piece head & shank, quick single-wrench install
- Best for standard, lower-pressure flange bolting
- Lower cost, shorter lead time on ready sizes
- Simple removal for routine maintenance work
Inconel Stud Bolt
- Two nuts share the clamp load evenly across the joint
- Easier to reuse on repeated flange opening & closing
- Preferred for Class 900 and above high-pressure flanges
- Better fatigue performance under cyclic thermal load
How To Identify Genuine Grade Of Inconel Bolt Head?
Check Grade & Heat Stamp
Head or end face should carry alloy grade, heat number & manufacturer mark
Step 1
Match PMI Reading To MTC
Ni, Cr & Mo reading on the fastener body must match certificate values
Step 2
Verify Thread Class Fit
Thread should gauge cleanly to Class 2B / 6H without forcing or slack
Step 3
Confirm Third-Party Inspection
SGS, BV or TUV report confirms independently witnessed test results
Step 4
Need Genuine Grade Fasteners For A Critical Joint?Share your drawing & specification – we match grade and thread exactly.
NACE MR0175 Sour-Service Compliance For Inconel Fasteners
Offshore and gas-field buyers ask for this compliance sheet before any Inconel fastener order is confirmed.
Controlled Hardness Limit
Every sour-service fastener batch is hardness-checked to stay inside the NACE limit
≤ 35 HRC Hardness
Bolts and studs are tested so no piece crosses the sour-service hardness ceiling
ISO 15156-3 Recognised
Chemistry & hardness combination accepted for global offshore procurement
Packing & Export Documentation For Inconel Fasteners
Wooden Crate / Poly Bag Packing
Grade & Heat Number Tagging
Packing List, Invoice & COO
FCL / LCL Sea & Air Freight
Frequently Asked Questions
What is the price of Inconel Bolts and Nuts per kg?
Price depends on grade, size and order quantity – share specification for an exact quotation.
Which sizes does ASTM B166 Inconel Hex Head Bolt come in?
Stocked from M6 to M64, metric and UNC thread series, with custom lengths available.
Are Inconel Stud Bolts magnetic in nature?
Inconel 600 and 625 fasteners stay non-magnetic across nearly all standard service temperatures.
Who supplies certified Inconel Alloy Bolts for export orders?
Ganpat Industrial forges, machines and certifies every Inconel fastener batch with full MTC traceability.
What documents come with Inconel Alloy Industrial Threaded Bar orders?
Every threaded bar order ships with mill test certificate, PMI report and packing list.
Explore Nearby Locations for the Quickest Delivery Options
| Saudi Arabia | UAE | Oman | Nigeria | South Africa |
| USA | Algeria | Kenya | Angola | Tanzania |
| Ethiopia | Zambia | Ghana | Gabon | Morocco |
| New South Wales | Mozambique | Egypt | Tunisia | – |
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