What Gives Ganpat Industrial Corporation The Edge In Alloy Steel 2HM Bolt Supply?
Quote In 24 Hours
Send size and quantity before 6 PM IST for next-morning 2HM Alloy Steel Bolts pricing
Heat-Traceable Every Piece
Each Alloy Steel Gr 2HM Nut and Stud carries a heat number back to the mill test certificate
100% Hardness Tested
Every ASTM A194 2HM Alloy Steel Nut is checked lot wise, not sample wise
Same-Week Dispatch
Rack sizes of Alloy Steel 2HM Bolt leave Mumbai within 5 working days of PO release
Zero Rejection Cost
PMI, hardness and dimensional checks cleared before the bundle is strapped
Alloy Steel 2HM Bolt Technicalities
- 1Material Basis: Alloy Steel 2HM Bolt family • ASTM A194 Grade 2HM Nut • medium carbon steel, quenched & tempered
- 2Governing Standards: ASTM A194 / ASME SA194 Grade 2HM • ANSI/ASME B18.2.2 Heavy Hex • companion ASTM A193 Grade B7M Stud
- 3Size Range: 1/4″ to 4″ nominal (M6 to M100) • UNC & 8UN thread series • custom Alloy Steel Gr 2HM Threaded Bar on request
- 4Hardness Control: 159 – 235 BHN (84 – 99 HRB) • ≤22 HRC ceiling for NACE MR0175 sour service • 100% lot tested
- 5Forms Supplied: Heavy Hex, Hex, Jam, Square, Dome & Coupling Alloy Steel 2HM Nuts • 2HM Alloy Steel Studs, Hex Head, J & Allen Bolts
- 6Coatings: Plain, Zinc, Hot-Dip Galvanized, Xylan & PTFE finishes for corrosion protection in harsh environments
Mumbai works desk • WhatsApp +91 85912 64209 • Rack sizes dispatch the same week
Ganpat Industrial Corporation manufactures and stocks the Alloy Steel 2HM Bolt family. We supply ASTM A194 Grade 2HM Heavy Hex Nut and Alloy Steel 2HM Studs. We have served industrial buyers from our Mumbai works since 1997. Ganpat Industrial is a trusted Alloy Steel 2HM Bolt Supplier in India. We dispatch MTC-certified 2HM Alloy Steel Bolts and nuts with EN 10204 3.1 certification. This keeps every Alloy Steel Gr 2HM Nut inside the NACE MR0175 ceiling. Applications include refinery flanges, pressure vessels, valves and pipeline tie-ins. Every length and lot is cut and heat treated against ASTM A194 requirements. UNS-referenced heat traceability is carried through to the mill test certificate on every order. We ship from Mumbai to Chennai, Vadodara and Kandla. We export Alloy Steel 2HM Bolt and Nut assemblies to Dubai, Dammam and Houston. Our export shipments also reach Rotterdam and Singapore.
Mumbai · Controlled-Hardness Bolting Manufacturer & Exporter
Dedicated Alloy Steel 2HM Bolt Manufacturer crafting components engineered for maximum operational lifespan.
Ganpat Industrial is a trusted Alloy Steel 2HM Bolt Supplier in India dispatching MTC-certified A194 2HM Heavy Hex Nut and matching B7M stud bolts from Mumbai with EN 10204 3.1 certification.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
MTC Certified A194 2HM Heavy Hex Nut Manufacturer in India, Refer Specification
Specification Of Alloy Steel 2HM Bolt
Order Sheet In One Glance
Everything a bolting buyer normally has to email us for, listed before you pick up the phone.
ASTM A194 2HM Alloy Steel Nut Material Basis
- Alloy Steel Gr 2HM Nut
- Medium Carbon Steel, Q&T
- Base Steel UNS K04100
- No dedicated Cr-Mo addition
Governing Bolting Standards
- ASTM A194 / ASME SA194 Gr 2HM
- ANSI/ASME B18.2.2 Heavy Hex
- Companion ASTM A193 Gr B7M
- NACE MR0175 / ISO 15156 Annex A
Alloy Steel 2HM Bolt Size Range
- 1/4″ – 4″ Nominal (M6 – M100)
- UNC To 1″, 8UN Over 1″
- Heavy Hex Series Standard
- Custom Studs / Threaded Bar Length
Alloy Steel 2HM Nuts & Bolting Form
- Heavy Hex, Hex, Jam, Square Nuts
- Dome & Coupling Nuts
- 2HM Alloy Steel Studs / Threaded Bar
- Hex Head, J, Allen & U-Bolts
Heat Treatment Condition
- Quenched & Tempered
- Temper ≥620°C [1150°F]
- 100% Lot Hardness Tested
- Sour-Service Controlled Hardness
Testing Offered On Alloy Steel 2HM Stud Bolts
- Brinell / Rockwell Hardness
- Chemical / PMI Spectro Analysis
- Proof Load & Tensile Test
- NACE MR0175 Compliance Check
Surface Coating Options
- Plain / Black Oxide
- Zinc & Hot-Dip Galvanized
- Xylan 1424 / PTFE Coated
- Dacromet On Request
Packing
- VCI-Wrapped Cartons
- Poly Bag Per 25 / 50 / 100 Pcs
- Wooden Case For Export
- Heat-No Tagged Bundles
Types Of Alloy Steel 2HM Fasteners We Supply
A reliable Alloy Steel 2HM Bolt Supplier in India ensures perfect fit and finish.
ASTM A194 2HM Alloy Steel Nut
Heavy Hex
Alloy Steel 2HM Square Nuts
Square
Alloy Steel Grade 2HM Dome Nuts
Dome
2HM Alloy Steel Coupling Nut
Coupling
Alloy Steel Gr 2HM Threaded Bar
Stud / TBR
Alloy Steel 2HM Stud
B7M Pair
ASTM A194 Alloy Steel Gr 2HM Hex Head Bolt
Hex Head
Alloy Steel Gr 2HM Allen Bolt
Socket Head
Need An Alloy Steel 2HM Industrial Threaded Bar In A Custom Length?Mail the diameter, length and thread series – we quote 2HM Alloy Steel Studs the same day.
Alloy Steel 2HM Heavy Hex Nut Size Chart
| Nominal Size | Threads / In | Width Across Flats | Thickness | Proof Load (lbf) |
|---|---|---|---|---|
| 1/2″ | 13 UNC | 0.875 | 0.504 | 21,280 |
| 5/8″ | 11 UNC | 1.062 | 0.631 | 33,900 |
| 3/4″ | 10 UNC | 1.250 | 0.758 | 50,100 |
| 7/8″ | 9 UNC | 1.438 | 0.885 | 69,300 |
| 1″ | 8 UN | 1.625 | 1.012 | 90,900 |
| 1.1/8″ | 8 UN | 1.812 | 1.139 | 118,500 |
| 1.1/4″ | 8 UN | 2.000 | 1.251 | 150,000 |
| 1.1/2″ | 8 UN | 2.375 | 1.505 | 223,800 |
2HM Nut vs A193 B7M Stud Pairing
An Alloy Steel 2HM Bolt assembly is compliant only with matching controlled-hardness certification.
ASTM A194 Grade 2HM Nut
- Medium carbon steel, UNS K04100 base
- Internally threaded, heavy hex pattern
- Hardness ceiling ≤235 HBW / 22 HRC
- Marked 2HM on one face plus maker symbol
ASTM A193 Grade B7M Stud
- Chromium-molybdenum alloy steel (Cr-Mo)
- Externally threaded, full or partial thread
- Hardness ceiling ≤235 HBW / 22 HRC
- 100% hardness tested against B7M limits
Alloy Steel 2HM Square Nuts Surface Coating & Finish Options
Protective Coatings For Harsh Environments
Every Alloy Steel 2HM Bolt and nut can receive site-specific corrosion finishes.
Plain / Black Oxide
Zinc Electroplated
Hot-Dip Galvanized (ASTM F2329)
Xylan 1424 Blue PTFE
Weekly Delivery Of Alloy Steel 2HM Bolt To Below Countries
| Export To | Countries | Continent | Shipping Time | Ports |
|---|---|---|---|---|
|
United Arab Emirates | Asia | 8 Days | Jebel Ali Port |
|
Saudi Arabia | Asia | 10 Days | Dammam Port |
|
United States | North America | 35 Days | Port of Houston |
Alloy Steel 2HM Stud Chemical Composition
IronFe
97.5 – 98.9%
CarbonC
0.40% min
ManganeseMn
1.00% max
SiliconSi
0.40% max
SulphurS
0.050% max
PhosphorusP
0.040% max
2HM Alloy Steel Coupling Nut Mechanical Properties
Proof Load Stress
150 ksi
1035 MPa
Brinell Hardness
159 – 235 BHN
84 – 99 HRB
Min Tempering Temp
620 °C
1150 °F
Sour-Service Ceiling
235 HBW Max
22 HRC / NACE MR0175
Base Material
Medium Carbon Steel
UNS K04100 heat-treated bar / forging stock
Heat Treatment
Quenched & Tempered
Liquid quench, temper ≥620°C [1150°F]
Hardness Testing
100% Lot Tested
Every Alloy Steel Gr 2HM Nut checked, not sample wise
Companion Stud
ASTM A193 Gr B7M
Cr-Mo alloy steel, ≤235 HBW controlled hardness
Alloy Steel Gr 2HM Nut Equivalent Grades
One Bolting Pair, Several Reference Names
Alloy Steel 2HM Bolt hardware is ordered by ASTM designation and cross-checked against counterparts.
ASTM / ASME
- ASTM A194 Grade 2HM
- ASME SA194 Grade 2HM
- Base Steel UNS K04100
Companion Bolting
- ASTM A193 Grade B7M Stud
- ASTM A320 Grade L7M (low temp)
- NACE MR0175 / ISO 15156 Annex A
Standard-Hardness Nut
- ASTM A194 Grade 2H
- Tempered ≥455°C [850°F]
- Hardness ceiling up to 35 HRC
Trade Names In Use
- Chrome Moly Gr 2HM Nuts
- CrMo Grade 2HM Nut
- Alloy Steel Gr 2HM Nut
Dimensional Standard
- ASME B18.2.2 Heavy Hex
- DIN 934 / ASME B18.2.4.6M (metric)
- IS 1364 (imperial reference)
Indian Market Note
- No single IS chemistry equivalent
- Ordered directly as A194 Gr 2HM
- Cross-checked via NACE Annex A
Physical Properties Of Alloy Steel 2HM Nuts
Density
7.85 g/cm³
0.284 lb/in³
Melting Range
1425 – 1460 °C
2597 – 2660 °F, typical medium carbon steel
Modulus Of Elasticity
200 – 210 GPa
29,000 – 30,458 ksi
Thermal Conductivity
~45 – 52 W/m·K
Typical for medium carbon steel, room temperature
High Strength Chrome Moly Gr 2HM Nuts and Studs with protective coatings for Harsh Environments
Application Of 2HM Alloy Steel Bolts
Where Controlled-Hardness Bolting Goes To Work
An Alloy Steel 2HM Bolt resists sulfide stress cracking, earning its BOM place.
Sour Oil & Gas Wellhead Bolting
Refinery & Petrochemical Flanges
Pressure Vessels & Heat Exchangers
Cross Country Sour Pipelines
Valve & Control Body Bolting
Offshore Platform Structures
Gas Gathering & Compression Skids
Sour Water Stripper Assemblies
ASTM A194 2HM Alloy Steel Nut Manufacturing & Heat Treatment
From Bar Stock To Finished Nut Or Stud
Our Alloy Steel 2HM Bolt hardware ships ready for sour and high-pressure duty.
Forging / Machining
Hot forged, cold forged or machined from heat-treated bar stock
Thread Rolling / Cutting
UNC or 8UN threads cut or rolled to Class 2B fit
Quench & Temper
Liquid quenched, tempered at 620°C [1150°F] minimum, after all machining
100% Hardness Check
Every piece tested, chemistry and proof load verified per lot
Coat & Dispatch
Finish applied, marked, bundled and shipped with MTC
A194 Grade 2HM vs Grade 2H Nut
Alloy Steel Gr 2HM Nut and Grade 2H nut share chemistry and dimensions.
ASTM A194 Grade 2HM
- Tempered ≥620°C [1150°F]
- Hardness 159 – 235 BHN (84 – 99 HRB)
- 100% hardness tested, every piece
- Paired with ASTM A193 Grade B7M stud
- Specified for NACE MR0175 sour service
ASTM A194 Grade 2H
- Tempered ≥455°C [850°F]
- Higher hardness ceiling, up to 35 HRC
- Standard sample-basis hardness testing
- Paired with ASTM A193 Grade B7 stud
- Not accepted for sour H₂S service
NACE MR0175 Sour Service Compliance
Why 2HM Alloy Steel Bolts Get Specified Over 2H
Alloy Steel 2HM Bolt and Nut assemblies provide controlled-hardness protection against H₂S cracking.
Governing Standard
NACE MR0175 / ISO 15156
Annex A.4 lists A194 Gr 2HM matched to A193 B7M
Hardness Ceiling
235 HBW / 22 HRC
Applies to both the nut and its stud
Failure Mode Prevented
Sulfide Stress Cracking
Risk rises sharply with hardness in H₂S service
Documentation
EN 10204 3.1 / 3.2
Heat number, chemistry and hardness traceable
2HM Alloy Steel Studs Marking & Identification
An Alloy Steel 2HM Bolt Manufacturer in India guarantees legible identification for site inspection.
Grade Symbol
2HM stamped on one bearing face, per ASTM A194 marking table
Every Piece
Manufacturer Identification
Registered maker’s symbol next to the grade stamp
Every Piece
Heat Number Traceability
Bundle tag links every length to its mill test certificate
Every Lot
B Suffix For Machined Nuts
Nuts machined from bar stock additionally marked ‘B’
Where Applicable
Alloy Steel 2HM Bolt Price In India
What Moves Your Per-Piece Rate
There is no fixed price per kg for Alloy Steel 2HM Bolt – seven levers decide the number on your quotation.
Send a size-wise quantity list. You get per-piece and per-kg pricing inside 24 hours with HSN, GST and packing weight already worked out on the quotation.
Monthly Delivery Of Alloy Steel 2HM Bolt To Below Countries
| Export To | Continent | Shipping Time |
|---|---|---|
 Qatar |
Asia | 9 Days |
 Nigeria |
Africa | 28 Days |
 Netherlands |
Europe | 30 Days |
 Singapore |
Asia | 14 Days |
Alloy Steel Gr 2HM Allen Bolt Testing
An experienced Alloy Steel 2HM Bolt Supplier in India tests specifications prior to dispatch.
Hardness Test
Brinell / Rockwell readings recorded on 100% of pieces
Chemical / PMI Analysis
Spectro reading against ASTM A194 Gr 2HM composition limits
Dimensional Inspection
Width across flats, thickness and thread checked to ASME B18.2.2
Proof Load Test
150 ksi proof stress verified per ASTM A194 acceptance method
Heat Treatment Record
Quench and temper cycle logged per batch, ≥620°C confirmed
Third Party Inspection
SGS, BV, TUV or Lloyd’s arranged before dispatch on request
Documentation Of Chrome Moly Gr 2HM Nuts
Chemical Analysis Report
Spectro reading against Alloy Steel 2HM composition limits
Every Order
Mechanical & Hardness Test Report
Proof load and hardness recorded on 100% of pieces, lot wise
Every Order
Dimensional Inspection Sheet
Width across flats, thickness and thread checked against ASME B18.2.2
Every Order
Certificate Of Origin
Chamber attested for customs clearance abroad
Export Orders
Packing List & Invoice
Piece count, net and gross weight, HSN and GST
Every Order
Alloy Steel 2HM Bolt Frequently Asked Questions
What are 2HM Alloy Steel Bolts used for?
They are used in sour, H₂S-containing oil, gas and refinery piping requiring NACE MR0175 compliance.
What grade pairs with an Alloy Steel 2HM Stud?
An A194 Grade 2HM nut pairs with the A193 Grade B7M stud for sour service.
What is the max hardness of an Alloy Steel Gr 2HM Nut?
Maximum hardness is capped at 235 HBW / 22 HRC for sour-service compliance.
Are Alloy Steel 2HM Square Nuts NACE compliant?
Yes, when manufactured and tested to A194 2HM requirements including hardness and heat treatment.
What coatings are available for a 2HM Alloy Steel Coupling Nut?
Plain black-oxide, zinc plating, Xylan PTFE, and hot-dip galvanizing are offered.
We Collaborate With Traders in the Following Locations
| 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 |