Grade 5.6 Bolt Manufacturer Since 2012 500 MPa Tensile, Hot-Dip Galvanized To ISO 10684 On Request M5–M39 Ex-Stock, EN 10204 3.1 With Every Keg

Grade 5.6 Bolt

Grade 5.6 Bolt Technicalities

Property Class5.6 per ISO 898-1 & IS 1367 Part 3
StandardsASTM F568M, DIN 267-3, BS EN ISO 898-1
Size RangeM5 to M39 • anchor bolts to M64
Length Range20 mm to 2000 mm
Hardness155–220 HV • 147–209 HB
MaterialMedium Carbon Steel, Boron-Free
Head Marking5.6 With Manufacturer Mark
FinishesSelf Colour, Zinc Plated, Hot-Dip Galvanized
MTCEN 10204 Type 3.1 As Standard
Delivery TimeEx-Stock: 1–3 Days • Custom: 3–4 Wks
HS Code73181500
OriginMade In India
Hot Forged
Not Cold-Formed Blanks
Continuous grain flow for higher fatigue strength
PED & RDSO
Approved Manufacturer
Documentation ready for regulated projects
NABL Lab
ISO/IEC 17025 Accredited
In-house mechanical & chemical testing
NAS / MIL / AN
Military Fasteners Specs
Tight-tolerance fasteners for approved programs
15+ Countries
Export Track Record
Africa, GCC, Americas & Southeast Asia
Custom Made
Non-Standard On Request
Length, thread and finish to your drawing
Grade 5.6 Bolt

 

0 · at glance

Mortec Manufacturing Co At A Glance

Founded

2012 15+ years hot forging fasteners

In-House Units

Forging & CNC machining Taloja & Mazgaon

Stockyard

8,850+ sq.ft ready fastener inventory

Approvals

ISO 9001:2015, PED RDSO, GST & IEC

Clientele

100+ buyers domestic & export projects

Export Reach

15+ countries Africa, GCC & Americas

Testing Offered

Proof load, hardness & chemical NABL lab

Shipment Documents

Invoice, Packing List COO, COI, MTC & BL

Zero-Defect Quality ASTM F568 Grade 5.6 Anchor Bolt Manufacturer in India, Check Tensile Strength

A holding-down bolt cast into concrete cannot be replaced after installation. Therefore, buyers need Grade 5.6 proof load results before concrete pouring. We forge, machine, and thread Class 5.6 bolts within Mumbai facilities. Our certificates show 500 MPa tensile and 300 MPa yield minimums. Full-size bolts are tested in our NABL laboratory before certification. Each test result remains traceable through the stamped heat number.

Standard hex bolts, studs, and threaded rods remain stocked from M6-M36. Bent L and J anchors follow customer drawings for required dimensions. Plate-ended anchors and oversized M42-M64 sections are also produced accordingly. Threads are rolled where drawings permit for improved thread consistency. Long anchor sections receive cut threads when required by drawings. Every thread is GO/NO-GO gauged before applying any protective coating. This ensures galvanized bolts accept Class 5 nuts throughout installation.

01 · Specification

Grade 5.6 Bolt Specification

Grade 5.6 Bolt Manufacturer in Mumbai supplies bolts with verified sizes, threads, materials, and property class.

Grade 5.6 Bolt Specification  

Grade 5.6 Bolt Head Styles

  • Hex head to ISO 4014 / ISO 4017
  • Heavy hex, square and special head options
  • Full or partial thread as specified

Class 5.6 Stud Bolts Mechanical Properties

  • 500 MPa minimum tensile strength
  • 300 MPa minimum lower yield strength
  • 280 MPa minimum proof stress

Hex Bolt 5.6 Grade Hardness

  • 155 HV minimum hardness
  • Maximum hardness controlled to the applicable standard
  • 20% minimum elongation after fracture

5.6 Grade Bolt Size Range

  • Standard ISO range includes metric sizes up to M39
  • Custom larger diameters available by agreement
  • Lengths manufactured to drawing or order specification

ASTM F568 Grade 5.6 Bolt Surface Finish

  • Self-colour and oiled finish
  • Zinc electroplating where specified
  • Hot-dip galvanizing to ISO 10684 where required

HT Grade 5.6 Screws Testing Scope

  • Tensile and proof-load testing
  • Hardness and dimensional inspection
  • Thread gauge and visual inspection

Grade 5.6 Anchor Bolt Certification

  • EN 10204 Type 3.1 MTC available
  • Chemical and mechanical test results documented
  • Third-party inspection available on request

Hot Dip Galvanized Bolts Grade 5.6 Manufacturing

  • Carbon steel manufactured to Class 5.6 requirements
  • Forged and machined forms available
  • Bolts, studs, anchor bolts and threaded rods

IS 1367 Grade 5.6 Studs Packaging

  • Cartons, kegs, bundles or pallets as required
  • Size, grade and lot identification on packaging
  • Heat and batch traceability for certified orders

Keep Ready-to-Ship Inventory of DIN 5.6 Fasteners With Custom Coatings And Precision Threads At Unmatched Pricing

02 · Product Range

Popular Types of DIN 5.6 Fasteners

All forms meet the same Class 5.6 property limits, regardless of head or embedment design.

Hex Bolt 5.6 Grade

Hex Bolt 5.6 Grade

ISO 4014/4017 • DIN 931/933
  • Part or full thread, head stamped 5.6 from M5 up
Grade 5.6 Anchor Bolt

Grade 5.6 Anchor Bolt

Cast-In Foundation Anchoring
  • Bent 90° tail, threaded projection to your drawing
HT Grade 5.6 Screws

HT Grade 5.6 Screws

Metric Fastening
  • Metric screws for general fastening and structural applications
HT Grade 5.6 Nuts

HT Grade 5.6 Nuts

ISO 898-2 Property Class 5
  • Class 5 nuts supplied matched, oversize tapped if galvanized
IS 1367 Grade 5.6 Studs

IS 1367 Grade 5.6 Studs

Fully Threaded • IS 1367 Part 3
  • Continuous thread studs cut to any site length
High Tensile Class 5.6 Threaded Rod

High Tensile Class 5.6 Threaded Rod

DIN 975/976 • 1 m & 3 m Bars
  • Hanger and tie rod stock, cut and coated to order
03 · Finish Choice

Coatings of ASTM F568M Grade 5.6 Bolt

Grade 5.6 bolts are available with finishes selected for corrosion protection, service conditions and project requirements.

Hot-Dip Galvanized (ISO 10684)
Zinc Electroplated (ISO 4042)
Dacromet / Zinc-Flake Coating
Mechanical Zinc Coating (ISO 12683)
Zinc-Nickel Plating
Black Oxide Finish (ISO 4042)
Phosphate & Oil Finish
Organic Polymer Coating

Grade 5.6 Bolt Manufacturer In India – Forging And CNC Lines Running Since 2012

Send the size, length and finish and our grade desk confirms class 5.6 values with a lead time the same working day.

Request Quote Now
04 · Composition

Hex Bolt 5.6 Grade Chemical Composition

Class 5.6 Limits Per ISO 898-1 & ASTM F568M – % By Weight
C0.13–0.55Carbon
P0.05 maxPhosphorus
S0.06 maxSulfur
05 · Strength Data

Mechanical Properties of Grade 5.6 Screw

Tensile Strength Rm (min)500 MPa
Lower Yield Strength ReL (min)300 MPa
Proof Stress Sp280 MPa
Elongation After Fracture A (min)20 %
06 · Cross-Reference

Equivalent of High Tensile Class 5.6 Threaded Rod

InternationalISO (International)

  • ISO 898-1 – property class 5.6
  • ISO 4014 / 4017 – screws
  • ISO 898-2 – class 5 mating nuts

GermanyDIN (Germany)

  • DIN 267-3 – DIN 5.6 fasteners
  • DIN 931 / 933 – hex bolt dimensions
  • DIN 975 / 976 – threaded rod

USAASTM / SAE (USA)

  • ASTM F568M Grade 5.6 – metric classes
  • ASTM A307 Grade B – nearest inch analogue
  • SAE J429 Grade 2 – nearest inch analogue

United KingdomBS (United Kingdom)

  • BS EN ISO 898-1 – property class 5.6
  • BS 3692 – precision hex bolts
  • BS 4190 – black hex bolts and nuts

JapanJIS (Japan)

  • JIS B1051 – strength class 5.6
  • JIS B1180 – hex bolts
  • JIS B1181 – hex nuts

CanadaCanada & Anchor Bolts

  • ASTM F1554 Grade 36 – below 5.6 on yield
  • ASTM F1554 Grade 55 – above 5.6 on yield
  • Written comparison sheet issued with the order

Grade 5.6 Bolt Exporter - Regular Sailings To Jebel Ali And Durban

Bolt cages, templates and matched class 5 nuts leave as one crated lot with the paperwork already inside.

Request Export Quote
07 · Anchoring

Anchor Bolt Grade 5.6 Embedment Types

Holding-down bolts for tanks, crushers, towers and machine foundations.

L-Type Bent AnchorRight-angle tail cast into the pour, threaded projection above the pedestal
J-Type Hooked AnchorHooked leg where cover depth is limited and reinforcement is congested
Straight With Bearing PlateSquare or round plate at the buried end, load spread over the concrete
Headed AnchorForged hex or square head embedded, cleanest option for repeat pours
Double-Nut EmbedmentTwo nuts locked at the tail, set height adjusted before the pour closes
Sleeved Or Pocket TypeSleeve gives lateral movement to chase a base plate that shifted
Cages And TemplatesBolt groups jigged, tack-welded to a template and shipped assembled
Matched HardwareClass 5 nuts, jam nuts and thick plate washers packed against each bolt
Global Reach

Hot Dip Galvanized Bolts Grade 5.6 Shipped Across Africa & The Gulf

Regular shipments from Nhava Sheva serve major African and GCC ports for smooth clearance.

Africa & GCC
South AfricaDurban, South Africa
South AfricaCape Town, SA
KenyaMombasa, Kenya
UgandaKampala, Uganda
UAEJebel Ali, UAE
Saudi ArabiaDammam, KSA
TurkeyMersin, Turkey
08 · Tightening

Torque Chart of 5.6 Grade Bolt

Torque values are calculated from Class 5.6 load limits and the specified friction factor.

Class 5.6 Coarse Thread – Load & Tightening Torque
SizePitch (mm)Stress Area (mm²)Proof Load (kN)Min Tensile Load (kN)Torque Dry, K = 0.20 (N·m)Torque Lubricated, K = 0.15 (N·m)
M61.0020.15.610.14.43.3
M81.2536.610.218.310.78.0
M101.5058.016.229.021.115.8
M121.7584.323.642.136.827.6
M162.0015744.078.591.468.6
M202.5024568.6122.5178.4133.8
M243.0035398.8176.5308.4231.3
M303.50561157.1280.5612.6459.5
M364.00817228.8408.51070.6802.9
09 · Behaviour

Properties of ASTM F568 Grade 5.6 Bolt

Key properties that determine Grade 5.6 bolt strength, hardness, ductility, and performance.

Reliable Clamping Performance
Easy Installation
Excellent Machinability
Magnetic
Suitable for Forming
Balanced Strength and Ductility
Consistent Quality
Traceable Material Documentation
10 · Comparison

Grade 4.6 Vs 5.6 Bolts

Both are unhardened carbon steel, Class 5.6 provides 25% more yield capacity, affecting material selection and cost.

Grade 4.6 Bolt

  • Tensile strength 400 MPa minimum
  • Yield strength 240 MPa minimum
  • Proof stress 225 MPa
  • Elongation 22 % minimum
  • Hardness 120–220 HV
  • Mating nut property class 4

Grade 5.6 Bolt

  • Tensile strength 500 MPa minimum
  • Yield strength 300 MPa minimum
  • Proof stress 280 MPa
  • Elongation 20 % minimum
  • Hardness 155–220 HV
  • Mating nut property class 5
11 · Industries

IS 1367 Grade 5.6 Studs Applications

Where our class 5.6 output actually ends up, from foundation pockets to conveyor galleries.

Foundation & Holding-Down Bolts
Non-Preloaded Structural Steelwork
Water & Effluent Treatment Plants
Solar Mounting Structures
Transmission & Telecom Towers
Cement, Sugar & Mining Plant
Conveyor, Chute & Hopper Assemblies
Jetty, Port & Dockside Equipment
Global Reach

Nut Bolt Grade 5.6 For America & Southeast Asia

We regularly ship to North American distributors and Southeast Asian assembly plants.

Americas & APAC
CanadaToronto, Canada
USAChicago, USA
MexicoMonterrey, Mexico
VenezuelaVenezuela
SingaporeSingapore
PhilippinesCebu, Philippines
MalaysiaPenang, Malaysia
VietnamVietnam
ThailandThailand
IndonesiaIndonesia
ItalyGenoa, Italy
NetherlandsRotterdam, Netherlands

Grade 5.6 Bolt Supplier In India – Certificate Released Before Loading

Domestic buyers see the test report and heat number before the truck is loaded, not a week later.

Get Supplier Quote
12 · Turnaround

Grade 5.6 Fasteners Delivery Timeline

Choose the shipping route around your pour date, with certification packed alongside each shipment.

Ex-Stock Dispatch

Racked M6 to M36 sizes clear our Mumbai godown inside 24 to 72 hours

Sea Freight

FCL and LCL sailings run roughly 18 to 35 days port to port

Air Freight

Shutdown and breakdown quantities fly within 3 to 7 days

Country-Specific ETA

Name your discharge port and we confirm the next booking cut-off

13 · Quality

Testing & Certification of HT Grade 5.6 Nuts

Each check below is run in our NABL ISO/IEC 17025 lab and recorded against the heat number on your certificate.

Spectro Chemical Analysis
Full-Size Wedge Tensile
Proof Load At 280 MPa
Vickers & Brinell Hardness
Elongation Measurement
Thread Gauging GO / NO-GO
Zinc Coating Thickness
Salt Spray Per ASTM B117
EN 10204 3.1 / 3.2 MTC
14 · FAQs

Grade 5.6 Bolt FAQs

The questions our grade desk answers most often before a class 5.6 order is released.

What is the tensile strength of Class 5.6 Stud Bolts?

Class 5.6 Stud Bolts has 500 MPa minimum tensile strength, 300 MPa yield strength, 280 MPa proof stress, and 20% minimum elongation.

What is the 5.6 Grade Bolt equivalent in other standards?

ISO 898-1, IS 1367, DIN 267-3, JIS B1051 & ASTM F568M, A307 Grade B and J429 Grade 2 are approximate analogues.

What sizes are Grade 5.6 Fasteners available in?

ISO 898-1 covers M5-M39; custom Class 5.6 sizes up to M64 and lengths up to 2000 mm are available.

Is ASTM F568 Grade 5.6 Bolt available in inch threads or only metric?

ASTM F568 Grade 5.6 covers metric coarse and fine threads, inch sizes follow equivalent ASTM/SAE grades.

Can HT Grade 5.6 Nuts be hot-dip galvanized?

Yes. HT Grade 5.6 Nuts is suitable for routine hot-dip galvanizing to ISO 10684 or ASTM A153, with threads adjusted for coating thickness.

What documentation ships with a Grade 5.6 Anchor Bolt export order?

EN 10204 3.1 MTC with heat, chemical and mechanical details; Type 3.2 and other certifications available on request.

Why Mortec Manufacturing Co For Grade 5.6 Bolts?
Class 5.6 proof load pulled on full-size bolts, not coupons
Bent L, J and plate anchors held threaded up to M64
Each 5.6 bolt keg tagged to its own heat certificate
Oversize-tapped nuts and 6az threads crated for any port

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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