ISO 9001 Certified Grade 12.9 Bolt Manufacturer Ex-Stock M6–M36, MTC EN 10204 2.1 & 3.1 15+ Years, Exported to 15+ Countries

Grade 12.9 Bolts

Grade 12.9 Bolts Snapshot

Sizes In StockM6 to M36, Coarse & Fine Pitch
Delivery TimeEx-Stock: 24–48 Hrs • Mill-Order: 3–4 Wks
Property Class12.9 Marked On Every Head
Governing StandardISO 898-1, ASTM F568M, IS 1367-3
Min. Tensile Strength1220 MPa (177 ksi)
OriginIndian & European Mills
Manufacturing ProcessCold/Hot Forged, Quenched & Tempered
MTC CertificateEN 10204 2.1 and 3.1
Alloying BaseAlloy Steel (Cr-Mo), Boron On Request
Head TypesHex, Hex Flange, Socket Head
HS Code7318.15 (Confirm 8-Digit Locally)
1220 MPa Tensile
Grade 12.9 Strength
High tensile core for heavy-duty joints
24-Hour Dispatch
On Ex-Stock Sizes
M6 to M36 leave same day
12.9 Head-Marked
ISO 898-1 Compliant
Every bolt stamped for easy grade ID
15+ Countries
Export Track Record
GCC, Africa, Europe, APAC & the Americas
Zero Middlemen
Factory-Direct Pricing
Straight from our forge shop, no markup
Free Torque Check
Talk To Our Engineer
Confirm size & joint torque before order
grade 12.9 bolt

 

0 · at glance

Mortec At A Glance

Established

Since 2012 15+ yrs experience

Manufacturing Units

2 in-house units Taloja & Mazgaon

Stockyard Area

8,850+ sq.ft Ready-stock inventory

Certifications

ISO 9001:2015, PED GST, IEC & MSME

Clientele

100+ clients India & export markets

Export Reach

15+ countries Europe, GCC & APAC

Testing Offered

Mechanical, hardness & dimensional MTC EN 10204 2.1 & 3.1

Shipment Documents

Invoice, Packing List COO, COI, MTC, BL & Lab Report

High Tensile Grade 12.9 Flange and Hex Bolt Manufacturer in India With Export-Grade Packaging, See Tensile Strength

When your bay or skid can't afford a fastener failure, Grade 12.9 is the property class engineers reach for. As a direct Grade 12.9 bolt manufacturer, we forge, thread and heat-treat every batch in-house, so what you order is exactly what leaves our Mumbai unit - no re-badged trading stock, no guesswork on the property class marking.

Buyers across the Middle East, Africa, Canada and Southeast Asia order from us because our ex-stock hex bolt and flange bolt range in M6 to M36 ships within 24 to 48 hours, complete with a mill test certificate and export-ready packing. Whether you need a Grade 12.9 M8 bolt for a light assembly or a Grade 12.9 M20 bolt for a structural joint, our in-house testing facility confirms hardness and proof load before your order is confirmed, not after it lands on site.

01 · Specification

Grade 12.9 Bolt Material Specification

Get your quote direct from the manufacturer - no middlemen, MTC included with every dispatch. We export Grade 12.9 fasteners worldwide with full mill certification

grade 12.9 bolt specification  

Grade 12.9 Metric Bolt Size Range

  • M6 to M36 ex-stock
  • M1.6 to M64 to mill order
  • Coarse & fine thread pitch

Grade 12.9 Hex Bolt & Drive Types

  • Hex Bolt 12.9 Grade, Grade 12.9 Flange Bolt, Countersunk
  • Socket (Allen) head on request

12.9 Grade Bolt Governing Standards

  • ISO 898-1 Property Class 12.9
  • ASTM F568 Grade 12.9 Bolt / ASTM F568M Grade 12.9 Bolt / IS 1367 Grade 12.9 Studs

DIN 12.9 Fasteners Dimensional Standards

  • DIN 931, DIN 933, DIN 912
  • ISO 4014, ISO 4017, ISO 4762

High Tensile Grade 12.9 Bolts Material & Temper

  • Alloy steel, quenched & tempered
  • Min. tempering temperature 425°C

Grade 12.9 Fasteners Testing & Documentation

  • Hardness, proof load, tensile break
  • MTC, dimensional report, TPI on request

ASTM F568 Grade 12.9 Screw & Ht Grade 12.9 Screws Surface Finish

  • Black oxide, plain, zinc plated
  • Yellow/blue zinc & Dacromet available

IS 1367 Grade 12.9 Nut Bolt

  • Matching HT Grade 12.9 Nuts & washers
  • Bagged, boxed or bulk export pack

ASTM F568M Grade 12.9 Anchor Bolt Manufacturing Origin

  • Indian & European mills
  • Origin certificate on request

Our most requested ex-stock sizes are Grade 12.9 M6, M8, M10 and M12 bolts. The larger M14–M24 range is popular for structural steel and heavy machinery joints

High Tensile Grade 12.9 Bolts Popular Sizes
Nominal SizeCoarse PitchHex A/F (ISO 4014/17)Head Height (approx.)
M61.00104.00
M81.25135.50
M101.50167.00
M121.75188.00
M142.00219.00
M162.002410.00
M182.502712.00
M202.503013.00
M222.503414.00
M243.003615.00
M273.004117.00
M303.504618.70
M333.505021.00
M364.005522.50

Indicative values per ISO 4014/4017 hex bolt series. Fine-pitch and socket-head dimensions issued with your RFQ.

Grade 12.9 Bolts Manufacturer In Mumbai,

ready stock M6–M36, dispatch within 48 hours

Request Quote Now

Keep Class 12.9 Stud and Threaded Rod Ready for Immediate Dispatch With In-House Testing Facility

02 · Codes We Follow

Grade 12.9 Bolt Manufacturing Standards

Every Grade 12.9 fastener is checked against these codes before dispatch. This includes IS 1367 Grade 12.9 studs for the domestic market

ISO 898-1
ASTM F568M
DIN 931 / 933
DIN 912 / 6921
IS 1367 Part 3
JIS B1051
EN ISO 4014/4017
Client-Specific
03 · Product Range

DIN 12.9 Bolts Types

We're a leading Grade 12.9 fasteners supplier in India. Our ex-stock inventory covers every common head type, from hex bolts to anchor bolts.

Grade 12.9 Hex Bolt

Grade 12.9 Hex Bolt

DIN 931/933 • M6–M36
  • Full or partial thread on shank
  • Most-ordered structural fastener, 12.9 grade bolt
Grade 12.9 Flange Bolt

Grade 12.9 Flange Bolt

DIN 6921 • Serrated/Plain
  • Integral washer face, no loose washer
  • Common on chassis & machinery joints
Ht Grade 12.9 Socket Head Cap Screws

Ht Grade 12.9 Socket Head Cap Screws

DIN 912 / ISO 4762 • Allen Drive
  • Compact head for recessed bores
  • Common in jigs, fixtures & machine tools
Class 12.9 Stud Bolts

Class 12.9 Stud Bolts

Double-End • Custom Length
  • Threaded both ends, plain or waisted
  • IS 1367 Grade 12.9 studs cut to your drawing length
High Tensile Class 12.9 Threaded Rod

High Tensile Class 12.9 Threaded Rod

Continuously Threaded • Cut Length
  • Full-length thread, cut-to-order
  • Used with coupling nuts on tie-rods
Grade 12.9 Anchor Bolt

Grade 12.9 Anchor Bolt

L/J-Type • Foundation Fixing
  • High preload for heavy base plates
  • Cast-in or chemical-anchor styles
04 · Composition

Grade 12.9 Fasteners Chemical Composition

ISO 898-1 requires a hardenable alloy steel, quenched and tempered above 425°C. Table shows the typical grade used (42CrMo4 / AISI 4140) - confirm exact chemistry on your MTC

Typical Alloy Steel For Class 12.9 (42CrMo4 / AISI 4140 Equivalent) - % by weight
C0.38–0.45Carbon
Si0.40 maxSilicon
Mn0.60–0.90Manganese
Cr0.90–1.20Chromium
Mo0.15–0.30Molybdenum
P0.025 maxPhosphorus
S0.035 maxSulfur
05 · Strength Data

Grade 12.9 Bolt Tensile & Yield Strength

MTC-backed, verified material properties per ISO 898-1 for property class 12.9 - covering tensile, yield and shear strength for design reference

Tensile Strength (Rm)1220 MPa / 177 ksi min
Yield Strength (Rp0.2)1080 MPa / 157 ksi min
Elongation (A)8% min
Hardness39–44 HRC (385–435 HV)
06 · Cross-Reference

Grade 12.9 Bolt Material Equivalent

Property Class 12.9 is referenced across every major fastener standard - use this table to cross-check your regional callout.

USAASTM (USA)

  • ASTM F568M Grade 12.9
  • No direct inch-series SAE match
  • ASTM A574 (socket screws)

GermanyDIN / EN (Germany)

  • DIN EN ISO 898-1
  • Property Class 12.9
  • Formerly DIN 267 Part 3

JapanJIS (Japan)

  • JIS B1051 Strength Class 12.9
  • JIS B1180 (Hex Bolt Dimension)

UKBS (United Kingdom)

  • BS EN ISO 898-1
  • Property Class 12.9

IndiaIS (India)

  • IS 1367 Part 3
  • Property Class 12.9

FranceISO (International)

  • ISO 898-1 (base standard)
  • ISO 4014 / 4017 (dimensions)
Global Reach

Your Grade 12.9 Bolt Partner Across The GCC

Ex-stock inventory and mill-order dispatch to buyers across the Gulf region.

Middle East & GCC
UAEDubai, UAE
UAEAbu Dhabi, UAE
Saudi ArabiaRiyadh, KSA
Saudi ArabiaDammam, KSA
QatarDoha, Qatar
OmanMuscat, Oman
KuwaitKuwait City
BahrainManama, Bahrain
07 · Installation

ASTM F568 Grade 12.9 Bolt Torque Chart

Indicative tightening torque for a lubricated Grade 12.9 fastener - actual values depend on lubrication and joint conditions. See M8–M24 torque below; confirm with your engineer for critical joints

Indicative Tightening Torque - Class 12.9, Lubricated (Nm)
SizeM6M8M10M12M14M16M18M20M22M24
Torque (Nm)1537751302053204606358651090

These figures are for reference only and assume a lubricated thread and bearing surface - dry/as-received torque can run 20–30% higher. Request a joint-specific torque calculation with your RFQ.

Global Reach

Grade 12.9 Bolts, Ex-Stock & Ready To Ship Across Africa

Container-ready shipments for buyers across North, West, East and Southern Africa.

Africa
South AfricaDurban, South Africa
South AfricaJohannesburg, SA
UgandaKampala, Uganda
KenyaNairobi, Kenya

Leading Grade 12.9 Bolts Manufacturer In India

enquiry quoted within 24 working hours

Request Export Quote
08 · Comparison

12.9 Grade Bolt vs Grade 10.9 vs Grade 8.8

The three most-specified metric property classes side by side - pick the lowest class that still meets your joint's design load.

Grade 8.8

  • Tensile: 800 MPa min
  • Yield: 640 MPa min
  • Material: Medium carbon steel, Q&T
  • Best For: General structural joints

Grade 10.9

  • Tensile: 1040 MPa min
  • Yield: 940 MPa min
  • Material: Alloy steel, Q&T
  • Best For: Flange & structural bolting

Grade 12.9

  • Tensile: 1220 MPa min
  • Yield: 1080 MPa min
  • Material: Alloy steel, Q&T, higher hardenability
  • Best For: High-load, weight-critical joints
09 · Identification

DIN 12.9 Fasteners Head Markings

Check these three marks on the bolt head before install - they confirm property class and traceability on every 12.9 grade bolt we dispatch.

"12.9" Property Class Mark
Manufacturer's Identification Symbol
Radial Line Or Raised Numeral Format
Batch/Heat Code Traceable To MTC
Global Reach

From Toronto To Manila - Grade 12.9 Bolts On Demand

Ex-stock supply lines serving North American, European and Southeast Asian buyers alike.

Americas & Europe
CanadaToronto, Canada
MexicoMexico
UKUnited Kingdom
GermanyGermany
NetherlandsNetherlands
ItalyItaly
TurkeyTurkey
Southeast Asia & APAC
SingaporeSingapore
MalaysiaMalaysia
ThailandThailand
PhilippinesManila, Philippines
IndonesiaIndonesia
VietnamVietnam
Domestic (India)
IndiaMumbai
IndiaAhmedabad
IndiaBengaluru
IndiaChennai
IndiaPune
10 · Coating

Grade 12.9 Bolts Coatings

Coating choice affects corrosion life and embrittlement risk - confirm your finish before order placement

Plain / Black OxideStandard indoor use, minimal corrosion resistance.
Zinc Electroplate (Clear/Yellow/Blue)Light-duty protection, baked to reduce embrittlement.
Mechanical Zinc / Zinc FlakePreferred over hot-dip - lower embrittlement risk.
Hot-Dip Galvanized Bolts Grade 12.9Not recommended above Grade 10.9 - confirm with our engineer.

Grade 12.9 Bolts Supplier In India stocking hex, flange and socket head types

MTC-backed batches packed to withstand long transit and tropical port handling.

Get Supplier Quote
11 · How It’s Made

Grade 12.9 Bolt Manufacturing Process

Every bolt passes through four stages, from wire rod to a heat-stamped finished piece.

1

Cold/Hot Forging

Wire rod headed and shank formed under pressure.

2

Thread Rolling

Threads rolled after heat treatment to preserve strength.

3

Quench & Temper

Tempered above 425°C to reach class 12.9 properties.

4

Test & Mark

Hardness and dimensional check before head-stamping.

12 · Turnaround

Order Turnaround By Shipping Mode

Dispatch begins the same day from our Mumbai unit once confirmed - choose your freight mode below.

Ex-Factory Dispatch

Stock orders leave within 24–48 hours of PO confirmation

Sea Freight

Economical for bulk orders, 2–5 weeks port to port

Air Freight

For urgent spares, 4–8 days door to door

Country-Specific ETA

Share your discharge port for an exact delivery window

13 · Quality

Grade 12.9 Bolt Testing & Certification

Grade 12.9 Hex Bolt is available on request and recorded on your mill test certificate.

Proof Load Test
Tensile Break Test
Hardness Test
Dimensional Inspection
MTC 2.1 / 3.1
Chemical Analysis
Head Marking Verification
Third-Party Inspection
Heat/Batch Traceability
Complete Test Certificates
14 · Industries

Hot Galvanized 12.9 Anchor Bolt Applications

These are the industries that specify Grade 12.9 fasteners and Grade 12.9 anchor bolts most often, and why.

Automotive & Machinery
Heavy Equipment & Cranes
Structural Steel Connections
Tooling & Fixtures
Wind & Power Generation
Foundation & Anchor Bolt Grade 12.9 Fixing
Marine & Offshore Structures
Aerospace Ground Equipment
15 · Track Record

Grade 12.9 Bolts Supply References

Grade 12.9 Bolts Exporter with EN 10204 3.1 certification and quick sea shipment

M20 Grade 12.9 Bolt - Heavy Equipment Assembly Line

Zinc plated, hardness & proof load tested, MTC 2.1.

Machinery Manufacturer, UAE

DUBAI, UAE

M24 Grade 12.9 Anchor Bolt Set - Precast Foundation Package

Custom length, dimensional report, MTC 3.1.

Construction Contractor, South Africa

DURBAN, SOUTH AFRICA

M12 Grade 12.9 Bolt - Tooling Fixture Order

Black oxide, batch hardness tested.

Tooling Supplier, Singapore

SINGAPORE

M16 Grade 12.9 Stud Bolt - Wind Turbine Tower Section

Full traceability, third-party witnessed proof load.

Renewable Energy EPC, Canada

TORONTO, CANADA

Top Export Countries

UAE UAE Saudi Arabia Saudi Arabia Qatar Qatar Oman Oman Kuwait Kuwait Bahrain Bahrain South Africa South Africa Uganda Uganda Canada Canada UK United Kingdom Singapore Singapore Thailand Thailand Malaysia Malaysia Indonesia Indonesia Vietnam Vietnam

Have your size and quantity ready? Message us your requirement on WhatsApp for an instant ex-Mumbai price.

16 · FAQs

Grade 12.9 Bolt FAQs

Quick answers to the questions buyers ask us most before placing an order.

What is the tensile strength of High Tensile Grade 12.9 Bolts?

1220 MPa min tensile, 1080 MPa min yield, per ISO 898-1.

Is an ASTM F568M Grade 12.9 Bolt the same as SAE Grade 8?

No - metric ISO property class, not a direct SAE Grade 8 match.

Can you supply Hot Dip Galvanized Bolts Grade 12.9?

Not advised - embrittlement risk. Mechanical zinc or zinc flake instead.

Do you export Grade 12.9 Fasteners to the Middle East and Africa?

Yes - GCC, Africa, Europe & the Americas, fully documented.

Which Grade 12.9 Hex Bolt and Grade 12.9 Flange Bolt sizes are ex-stock?

M6 to M36 ex-stock, incl. Grade 12.9 M12 Bolt; above M36 on mill order.

Mortec's Grade 12.9 Bolts - A Trusted Choice
Core hardness verified 39–44 HRC on every production batch
Hex, flange and socket head held ex-stock, M6 to M36
Every Grade 12.9 batch tested with MTC EN 10204 2.1/3.1
Custom length studs and threaded rod cut to your drawing

Materials



Certifications & Credentials
Certified to PED 2014/68/EU for the manufacture of forged steel products
Stock, distribute and trade Steel Flanges, Nuts and Bolts, and precision-machined parts in Nickel Alloys, High Temperature Alloys and Super Alloys
Since 2012, exporting Oil and Gas piping items built to NACE MR0175 / ISO 15156 across the Egypt, Tunisia, Netherlands, Azerbaijan, South Africa, Algeria, Saudi Arabia and Morocco
Hold the largest import and stock inventory of bolting accessories, in both ferrous and non-ferrous metals, in India

Authorized Supplier For The Following Companies - Material At Reseller Price For Traders

Associated Companies - ADNOC, SABIC, Saudi Aramco, GASCO, ORPIC, KNPC, QATARGAS

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