ASTM A194 2H Nuts At A Glance
Mortec At A Glance
Established
Since 2012 • 14 yrs in alloy fastening
Manufacturing Units
2 in-house units • Taloja & Mazgaon
Stockyard Area
8,850+ sq.ft • Ready-stock inventory
Certifications
ISO 9001:2015 • GST, IEC & MSME
Clientele
100+ clients • India & export markets
Export Reach
19+ countries • GCC, Africa & Americas
Testing Offered
Proof load, hardness & chemical • MTC EN 10204 3.1
Shipment Documents
Invoice, Packing List • COO, COI, MTC, BL & Lab Report
Table of Content
High-Temperature ASME SA 194 Grade 2H Hex Nut Manufacturer in India in Custom Dimensions
Flange joints fail at the nut long before they fail at the stud, which is why buyers in South Africa, the UAE, Kenya and Canada come to us for ASTM A194 2H Nuts they can bolt up without re-tapping. Each ASTM A194 Grade 2H nut is quenched and tempered above 1100°F, held between 248 and 327 HBW, and tapped after heat treatment so the Class 2B thread runs clean on a B7 stud straight out of the keg.
Our Mumbai works carries 1/4″ through 4″ in ASTM A194 2H heavy hex, ASTM A194 Grade 2H coupling nut and jam forms, with the softer A194 2HM heavy hex jam nut variant on the shelf for sour service lines. Because we forge, temper and tap under one roof, a shutdown enquiry does not travel through three traders before it reaches a machine. Send the size list, the stud grade it mates with and the coating you need, and our bolting desk confirms stock, proof load documentation and dispatch date in a single reply.
ASTM A194 2H Nuts Specification
Share your size list, coating and quantity, and we'll respond with stock status, documentation scope and an ex Mumbai rate.
ASTM A194 2H Nuts Proof Load Verification
- Axial proof load on hardened mandrel
- Sampling per A194 lot rules
ASTM A194 Grade 2H Nuts Surface Finish
- Plain, black oxide, phosphate
- Hot-dip galvanised, zinc, PTFE coated
ASTM A194 Gr 2H Nuts Sour Service Compliance
- Hardness held under the 22 HRC ceiling
- NACE MR0175 / ISO 15156 documentation
ASTM A194 2H Hex Nut Third-Party Inspection
- SGS, TUV, BV, Lloyd’s witness
- Client QA stage inspection welcome
ASTM A194 2H Heavy Hex Nuts Heat Lot Traceability
- Grade symbol plus maker’s mark
- Heat number tied to every keg
ASTM A194 Grade 2H Coupling Nut Export Packing
- 25 kg kegs, drums or wooden cases
- VCI lining, palletised and strapped
ASTM A194 Grade 2H Heavy Hex Nuts Order Quantity
- Single keg through container-load lots
- Mixed sizes consolidated on one invoice
A194 2H Material Mill Source & Origin
- Indian, Korean and European bar
- Country of origin certificate issued
ASTM A 194 2H Jam Nuts Dimensional Standard
- ASME B18.2.2 heavy hex nut dimensions
- Threaded per ASME B1.1, Class 2B fit
SA194 Gr 2H Hex Nut Manufacturing Standards
Before release from our inspection bay, we gauge and document every lot against the codes listed below.
Middle East and GCC Turn to Us for ASME SA 194 Grade 2H Hex Nut Supply
As an established ASTM A194 2H Nuts Exporter, we handle both ready stock and mill order batches for Gulf sites.
Dammam, KSA
Istanbul, Turkey
Abu Dhabi, UAERiyadh, KSADubai, UAEASTM A194 Gr 2H Heavy Hex and Coupling Nut Stock Ready To Ship For Urgent Orders, MTC Included
SA 194 Gr 2H Nuts Testing & Certification
Every check below can be added to your scope and logged on the mill test certificate, we're an ASTM A194 2H Nuts Exporter you can rely on.
SA 194 2H All Metal Lock Nuts Applications
We're an ASTM A194 2H Nuts Manufacturer in India, and Grade 2H stays our default nut wherever A193 B7 studs face pressure, heat or vibration.
ASTM A194 2H Nuts Types
As an ASTM A194 2H Nuts Supplier in India, we machine non standard shapes from qualifying 2H stock and certify every batch.
ASTM A194 2H Heavy Hex Nuts
ASME B18.2.2 • 1/4″–4″- The standard A194 flange bolting nut
- Marked 2H plus maker’s identifier
SA 194 2H Jam Nuts
ASTM A194 Form • 1/4″–4″- Covered by the A194 specification
- Backing nut on long stud runs
ASTM A194 Grade 2H Hex Nut
Finished Hex • Made To Order- Slimmer across-flats than heavy hex
- Used where wrench room is tight
ASTM A 194 2H Coupling Nut
Extended Length • Machined- Joins two threaded rods end to end
- Sight hole drilled on request
ASME SA 194 Grade 2H Hex Nut Supply Reaching North West East and Southern African Regions
We move container ready loads of ASTM A194 2H heavy hex nuts across Africa, with mill traceability on every batch.
Johannesburg, SA
Nairobi, Kenya
Lagos, Nigeria
Kampala, UgandaDurban, SAMombasa, KenyaASTM A194 2H Nuts Manufacturer In Mumbai With In-House Tempering Since 2012
Share your size and quantity list, and we'll confirm ex-stock rates within the same working day.
SA 194 2H Material Chemical Composition
With no chromium or molybdenum, Grade 2H relies on plain carbon steel and its 0.40 percent carbon floor for strength.
ASTM A194 Gr 2HM Dome Nuts Mechanical Properties
Since nuts hold the stud rather than stretch, they qualify on proof load and hardness, not a tensile coupon.
ASTM A194 2H Equivalent Material
Heat treatment, not alloy content, is what defines 2H, which is why, as an ASTM A194 2H Nuts Exporter, we flag it as having no true equivalent.
ASTM / ASME (USA)
- ASTM A194 Grade 2H
- ASME SA-194 Grade 2H (exact)
- ASTM A194 Grade 2HM (sour variant)
- ASTM A563 Grade DH (closest alternate)
DIN / EN (Germany)
- No direct grade equivalent
- DIN 934 / EN ISO 4032 (form only)
- C45 / 1.0503 base steel class
- EN 10269 for bolting materials
BS (United Kingdom)
- No direct grade equivalent
- BS 3692 / BS EN ISO 4032 (form)
- BS EN 10269 bolting steels
JIS (Japan)
- JIS B 1181 (hex nut form)
- JIS G4051 S45C base steel
GB/T (China)
- GB/T 6170 (hex nut form)
- 45 steel base material class
IS (India)
- No direct grade equivalent
- IS 1364 (hex nut form)
- Supplied to ASTM A194 as written
Need 2HM Nuts For A Sour Service Line?
Share your H2S exposure level with us, and we'll confirm the correct hardness ceiling before any metal is cut.
ASME SA 194 Grade 2H Hex Nut Shipments Reaching Buyers Throughout North and Latin America
Both ex stock and mill order ASTM A194 2H nuts reach fabricators and stockists across the Americas through us.
Houston, USA
Toronto, Canada
VenezuelaCalgary, Canada
MexicoAstm A194 Gr 2H Nut Dimensions
Since ASTM A194 runs inch series, ASTM A194 Grade 2H Nut Dimensions Metric shown below are converted from ASME B18.2.2 sizes.
| Nominal Size | Threads Per Inch | Across Flats (in) | Across Flats (mm) | Thickness (in) | Thickness (mm) |
|---|---|---|---|---|---|
| 1/4″ | 20 UNC | 1/2 | 12.70 | 15/64 | 5.95 |
| 5/16″ | 18 UNC | 19/32 | 15.08 | 19/64 | 7.54 |
| 3/8″ | 16 UNC | 11/16 | 17.46 | 23/64 | 9.13 |
| 7/16″ | 14 UNC | 25/32 | 19.84 | 27/64 | 10.72 |
| 1/2″ | 13 UNC | 7/8 | 22.23 | 31/64 | 12.30 |
| 9/16″ | 12 UNC | 31/32 | 24.61 | 35/64 | 13.89 |
| 5/8″ | 11 UNC | 1-1/16 | 26.99 | 39/64 | 15.48 |
| 3/4″ | 10 UNC | 1-1/4 | 31.75 | 47/64 | 18.65 |
| 7/8″ | 9 UNC | 1-7/16 | 36.51 | 55/64 | 21.83 |
| 1″ | 8 UNC | 1-5/8 | 41.28 | 63/64 | 25.00 |
| 1-1/8″ | 8 UN | 1-13/16 | 46.04 | 1-7/64 | 28.18 |
| 1-1/4″ | 8 UN | 2 | 50.80 | 1-7/32 | 30.96 |
| 1-3/8″ | 8 UN | 2-3/16 | 55.56 | 1-11/32 | 34.13 |
| 1-1/2″ | 8 UN | 2-3/8 | 60.33 | 1-15/32 | 37.31 |
| 1-3/4″ | 8 UN | 2-3/4 | 69.85 | 1-23/32 | 43.66 |
| 2″ | 8 UN | 3-1/8 | 79.38 | 1-31/32 | 50.01 |
| 2-1/4″ | 8 UN | 3-1/2 | 88.90 | 2-7/32 | 56.36 |
| 2-1/2″ | 8 UN | 3-7/8 | 98.43 | 2-15/32 | 62.71 |
| 3″ | 8 UN | 4-5/8 | 117.48 | 2-31/32 | 75.41 |
| 3-1/2″ | 8 UN | 5-3/8 | 136.53 | 3-15/32 | 88.11 |
| 4″ | 8 UN | 6-1/8 | 155.58 | 3-31/32 | 100.81 |
ASTM A194 2H Nuts Vs ASTM A194 2HM Nuts
ASTM A194 2H Nuts Manufacturer in Mumbai explains hardness tempering and service differences separating Grade 2H from Grade 2HM fasteners.
ASTM A194 Grade 2H
- Tempering: 1100°F (593°C) minimum
- Hardness: 248–327 HBW / 24–35 HRC
- Mates With: A193 B7 studs
- Best For: Sweet service, steam, general flange work
- Marking: 2H
ASTM A194 Grade 2HM
- Tempering: 1150°F (620°C) minimum
- Hardness: 159–235 HBW, capped at 22 HRC
- Mates With: A193 B7M studs
- Best For: H2S sour service to NACE MR0175 / ISO 15156
- Marking: 2HM
ASTM 2h Thin Square Nuts Pairing Guide
The stud, not the flange, decides the nut order, and this is exactly the pairing logic our bolting desk applies when only a stud grade is shared.
ASTM A194 Gr 2H Heavy Hex and Coupling Nut Exporter In India To Jebel Ali Port, UAE
Our weekly consolidations sail out of Nhava Sheva, reach out today for your landed cost.
ASTM A194 2HM Square Nuts Coating
When a galvanised stud meets a standard tapped nut, that's exactly where Durban, Mombasa and Gulf coastal jobs run into trouble.
A194 2HM Heavy Hex Jam Nuts Fit Up Process
Before a coated stud and nut pair ever reaches site, four checks ensure they'll run together smoothly.
Coat The Stud First
The stud thread is galvanised before the mating nut is finish-tapped.
Overtap The Nut
Nut threads are cut oversize so coating build-up on the stud still clears.
Lubricate The Thread
Overtapped galvanised nuts are supplied waxed to control assembly friction.
Trial Assemble
Sample pairs are run together in our bay before the lot is packed.
Ordering Galvanised ASTM A194 Gr 2H Heavy Hex and Coupling Nut?
Coating happens before overtapping here, which means your studs turn by hand, not by hammer.
ASTM A 194 Gr 2H Castle Nuts Manufacturing Process
Inside our own units, every nut goes through hot forging, quenching, tempering and tapping, in a sequence that matters just as much as the steel itself.
Bar Shearing
Carbon steel bar sheared to slug weight for the nut size.
Hot Forging
Slug upset and trimmed into the heavy hex blank.
Quench & Temper
Hardened, then tempered above 1100°F to land inside 248–327 HBW.
Tap, Test & Mark
Class 2B thread cut after heat treatment, proof loaded and grade stamped.
ASTM A 194 2H Jam Nuts Delivery Timeline
Once payment clears, nut lots get kegged from Mumbai, choose your freight mode since ocean transit time depends on the port.
Ex-Stock Dispatch
Common heavy hex sizes leave our Mumbai godown inside 24 to 48 hours
Sea Freight (FCL/LCL)
Budget-friendly ocean movement, generally 12 to 32 days to your discharge port
Air Freight (Urgent)
Shutdown and breakdown lots fly out and land inside 3 to 7 days
Country-Specific ETA
Share your port name and we return a dated arrival window
A194 2H Material Price Factors
There's no fixed price on A194 2hm Heavy Hex Jam Nuts, these five factors move the rate and make quote comparison easier.
ASTM A194 Grade 2H Heavy Hex Nuts Supply References
Here's a recent sample of A194 2H nut lots our Mumbai works dispatched to buyers across the Gulf, Africa and North America.
1-1/4″ A194 2H Heavy Hex Nuts – Crude Unit Flange Overhaul
Proof load tested, hardness logged, EN 10204 3.1 MTC.
Refinery Maintenance Contractor, UAE
ABU DHABI, UAE3/4″ A194 2HM Nuts – Sour Gas Gathering Line Package
Hardness held under 22 HRC, NACE MR0175 documentation.
Upstream EPC Contractor, Canada
CALGARY, CANADA1″ A194 2H Galvanised Nuts – Mine Conveyor Structure
Hot-dip galvanised to A153 Class C, overtapped and waxed.
Mining Contractor, South Africa
JOHANNESBURG, SOUTH AFRICA1-1/2″ A194 2H Nuts – Boiler Manhole Bolting Set
Matched to A193 B7 studs, third-party witnessed release.
Power Plant O&M Contractor, Kenya
NAIROBI, KENYA7/8″ A194 2H Coupling Nuts – Pipe Support Rod Extension
Machined coupling form, sight hole drilled, heat traceable.
Piping Fabricator, Saudi Arabia
JUBAIL, SAUDI ARABIA5/8″ A194 2H Jam Nuts – Jetty Loading Arm Maintenance
PTFE coated, thread gauge checked, packed in VCI-lined kegs.
Terminal Operator, Singapore
SINGAPORETop Export Countries
UAE
Turkey
Canada
United Kingdom
Saudi Arabia
Singapore
United States
Mexico
Thailand
Italy
Netherlands
Germany
Philippines
Malaysia
Uganda
Indonesia
South Africa
Vietnam
Venezuela
ASME SA-194 Grade 2H Nut Supplier In Chennai With NACE MR0175 Backup
Proof load, hardness and heat number records travel with every lot, ready for your QA file.
ASTM A194 2H Nuts FAQs
Here are the questions our bolting desk fields most before a purchase order goes out.
What are ASTM A194 2H Heavy Hex Nuts dimensions in metric?
Grade 2H is inch-series, so metric sizes are converted ASME B18.2.2 dimensions, covering 1/4″ to 4″ in our full chart above.
What is the chemical composition of SA 194 2H Material?
Grade 2H is plain carbon steel with 0.40% minimum carbon, defined as much by its quench and temper condition as by chemistry.
What is the equivalent material for ASTM A194 Grade 2H Nuts?
ASME SA-194 Grade 2H is the only exact match, with no direct DIN, EN, BS or JIS equivalent available.
What is the difference between ASTM A194 Gr 2H Nuts and A194 2HM Heavy Hex Jam Nuts?
Both share the same chemistry, but 2HM is tempered softer to meet sour service hardness limits under NACE MR0175.
Which stud grade pairs with ASTM A 194 Gr 2H Castle Nuts?
Grade 2H pairs with A193 B7 studs, while low-temperature A320 L7 studs need impact-tested Grade 7 nuts instead.
What sizes and price basis apply to ASTM A194 2H Hex Nut?
We hold 1/4″ to 4″ in stock, priced by size, coating and testing level against your quantity.
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