Product Overview
Carbon Steel Fastener Stockist & Supplier in India
Carbon steel fasteners are widely used for industrial assemblies, structural
connections, piping systems, machinery, pressure equipment, and general
engineering applications. As a reliable Carbon Steel Fastener Stockist in
India and Carbon Steel Fastener Supplier in India, Metal-Link Steel &
Alloys supplies a comprehensive range of bolts, nuts, stud bolts, threaded
rods, screws, washers, and custom fastening components in different grades
and specifications.
A Carbon Steel Fastener offers a practical balance of strength, machinability,
availability, and cost-effectiveness. Depending on the carbon content,
manufacturing process, and heat treatment, carbon steel fasteners can be
produced for low-strength general-purpose applications as well as
high-strength industrial bolting requirements.
With an established presence since 1985 and ISO 9001:2015, ISO 14001:2015 and
ISO 45001:2018 certifications, Metal-Link supports carbon steel fastener
requirements with material traceability, inspection documentation and
project-based supply.
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Factory Rates →
Datasheet
Carbon Steel Fastener Specifications
| Specification |
Details |
| Product |
Carbon Steel Fasteners |
| Material Grades |
ASTM A307 Grade A & B, ASTM A193 Grade B7,
ASTM A354 Grade BC, ASTM F1554 Grade 36 & 55,
ASTM A36 |
| Material Specifications |
ASTM A307, A36, A193, A354, F1554, A563,
F844, ASME B18.2.1, B18.2.2, B18.31.5 |
| Types Available |
Hex Bolts, Heavy Hex Bolts, Stud Bolts, Threaded
Rods, Machine Bolts, Socket Head Screws, Set Screws,
Hex Nuts, Heavy Hex Nuts, U-Bolts, Anchor Bolts,
Eye Bolts, Flat Washers, Spring Washers |
| Thread Types |
Metric, UNC, UNF, BSW, and other thread forms as
required |
| Product Form |
Cold Formed, Hot Forged & Machined, Heat
Treated as applicable |
| Surface Finish |
Plain, Black Oxide, Zinc Plated, Hot-Dip
Galvanized, Mechanically Galvanized, Phosphate,
PTFE / Fluoropolymer Coatings |
| Application |
Industrial Machinery, Structural Fabrication,
Piping Systems, Construction & General
Engineering |
Product Range
Types of Carbon Steel Fasteners
As an experienced Carbon Steel Fastener Supplier in India, Metal-Link supplies
a wide range of fastening products for industrial and commercial
applications. Our product range includes:
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Carbon Steel Hex Bolts
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Carbon Steel Heavy Hex Bolts
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Carbon Steel Stud Bolts
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Carbon Steel Threaded Rods
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Carbon Steel Hex Nuts
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Carbon Steel Heavy Hex Nuts
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Carbon Steel Machine Bolts
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Carbon Steel Socket Head Screws
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Carbon Steel Set Screws
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Carbon Steel U-Bolts
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Carbon Steel Anchor Bolts
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Carbon Steel Eye Bolts
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Carbon Steel Flat Washers
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Carbon Steel Spring Washers
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Custom Carbon Steel Fasteners
Types of Carbon Steel Bolts
Hex BoltsAmong the most
commonly used mechanical fasteners. Their hexagonal head allows
convenient installation and controlled tightening using standard
spanners or sockets.
Stud BoltsThreaded fastening
components commonly used with nuts on both ends. Suitable for flange
connections, machinery, equipment assemblies, and industrial piping
applications.
Anchor BoltsDesigned to
secure machinery, structural members, base plates, and industrial
equipment to concrete foundations.
U-BoltsCommonly used for
pipe support, clamping, structural fastening, and equipment mounting
applications.
Threaded RodsProvide
continuous threaded engagement and are used for support systems,
equipment assemblies, anchor applications, and custom fastening
requirements.
Carbon Steel Nuts & Washers
Hex NutsInternally threaded
components used with bolts, threaded rods, and stud bolts. The nut
grade should be selected for suitable compatibility with the bolt
material and required mechanical properties.
Heavy Hex NutsHave larger
dimensions than standard hex nuts and are commonly used in heavy-duty
industrial bolting applications.
Flat WashersDistribute the
clamping force over a larger surface area and can help prevent damage
to the connected components during tightening.
Spring WashersDesigned to
provide additional resistance to loosening in certain applications.
Suitability depends on joint design, vibration conditions, preload
requirements, and operating environment.
Material Grades
Carbon Steel Fastener Grades Available
| Material Specification |
Material Type |
Typical Application |
| ASTM A307 Grade A |
Low Carbon Steel Bolting |
General mechanical and structural
applications |
| ASTM A307 Grade B |
Carbon Steel Bolting |
Specified cast iron flange applications |
| ASTM A354 Grade BC |
Quenched and Tempered Alloy Steel |
High-strength bolting applications |
| ASTM F1554 Grade 36 |
Carbon Steel Anchor Bolts |
Structural anchoring |
| ASTM F1554 Grade 55 |
Carbon/Manganese Steel Anchor Bolts |
Higher-strength anchoring applications |
| ASTM A36 |
Carbon Steel |
General fabricated and structural
applications |
Material selection should be based on the required mechanical strength,
operating environment, temperature, pressure, corrosion conditions, and
applicable engineering standard.
ASTM A193 Grade B7 Stud Bolts
ASTM A193 Grade B7 is a high-strength chromium-molybdenum alloy steel bolting
grade and is commonly used alongside carbon steel piping and flange systems
for high-pressure applications. While B7 itself is alloy steel rather than
carbon steel, it is frequently specified in industrial bolted joints requiring
higher strength than standard carbon steel fasteners.
- ✓High tensile
strength
- ✓Good
toughness
- ✓Suitable for
high-pressure bolted joints
- ✓Reliable performance
at moderately elevated
temperatures
B7 stud bolts are widely used in refinery, petrochemical, pressure vessel,
and industrial piping applications.
ASTM A307 Grade A Fasteners
ASTM A307 Grade A covers carbon steel bolts, studs, and threaded rods intended
for general-purpose mechanical and structural applications.
- ✓Economical material
option
- ✓Good
machinability
- ✓Suitable for general
bolted connections
- ✓Available in a wide
range of standard sizes
ASTM A307 Grade A Carbon Steel Fasteners are commonly used in machinery,
equipment assemblies, construction, and general engineering
applications.
ASTM A307 Grade B Fasteners
ASTM A307 Grade B is generally associated with flange bolting applications
using cast iron flanges. It provides a practical fastening solution for
compatible low-to-moderate strength flange joints.
- ✓Designed for specified
flange applications
- ✓Suitable for standard
industrial bolted connections
- ✓Commonly available in
stud bolt configurations
ASTM A105 Fasteners and Forged Components
ASTM A105 is a forged carbon steel specification commonly used for piping
components such as flanges and fittings rather than as a general fastener
specification. However, carbon steel fasteners may be selected for use with
ASTM A105 flange assemblies based on the applicable bolting specification
and pressure-temperature requirements.
Design Data
Standards, Specifications & Design Considerations
Standards & Specifications
As a trusted Carbon Steel Fastener Stockist in India, Metal-Link supplies
products according to recognized international standards and project
specifications.
| Standard |
Scope |
| ASTM A307 |
Carbon steel bolts, studs, and threaded rods for
general-purpose applications |
| ASTM A36 |
Carbon steel for general structural and fabricated
applications |
| ASTM F1554 |
Carbon and alloy steel anchor bolts for structural
applications |
| ASTM A563 |
Carbon and alloy steel nuts |
| ASTM F844 |
Washers for use with structural fasteners |
| ASME B18.2.1 |
Square, hex, heavy hex, and askew head bolts and
screws |
| ASME B18.2.2 |
Nuts for general applications |
| ASME B18.31.5 |
Threaded rods |
| DIN / ISO / EN / BS |
Alternative dimensional and material standards as
required |
The applicable standard should be selected according to the fastener type,
mechanical requirements, installation conditions, and intended service.
Corrosion Protection & Surface Finish
Uncoated carbon steel is susceptible to atmospheric corrosion and may require
protective treatment depending on the service environment. The selected
coating should consider the operating environment, required thread fit,
temperature exposure, and compatibility with the assembled materials.
Plain FinishSuitable for
dry or controlled indoor environments where corrosion protection is
not a primary requirement.
Zinc PlatingProvides
moderate corrosion protection through electrodeposition. Suitable
for general industrial and commercial applications.
Hot-Dip
GalvanizingProvides heavy-duty corrosion protection
suitable for outdoor, structural, and exposed
applications.
PTFE / Fluoropolymer
CoatingsProvide chemical and corrosion resistance
for specific service environments and are commonly used in process
industries.
Material Data
Manufacturing & Mechanical Performance
Manufacturing Process
The manufacturing process for a Carbon Steel Fastener depends on the product
type, required dimensions, mechanical properties, and applicable standard.
Cold forming is commonly used for high-volume fastener production, while hot
forging and machining may be preferred for larger sizes or special
configurations. The process may include:
- ✓Selection of carbon steel
raw material
- ✓Cutting or wire
preparation
- ✓Cold heading or hot
forging
- ✓Machining where
required
- ✓Thread rolling or thread
cutting
- ✓Heat treatment for
applicable grades
- ✓Surface finishing or
protective coating
- ✓Dimensional
inspection
- ✓Mechanical
testing
- ✓Final marking and
documentation
Mechanical Properties
The mechanical properties of carbon steel fasteners depend on carbon content,
material grade, manufacturing method, and heat-treatment condition.
Low-carbon steel fasteners generally offer good ductility and formability,
while higher-strength carbon steel fasteners may require controlled heat
treatment to achieve the specified mechanical properties.
- ✓Tensile
strength
- ✓Yield
strength
- ✓Proof
load
- ✓Hardness
- ✓Elongation
- ✓Ductility
- ✓Toughness
- ✓Thread
strength
Industry Use
Applications of Carbon Steel Fasteners
Carbon steel fasteners are widely used because of their strength,
availability, ease of fabrication, and cost efficiency. For corrosive or
high-temperature environments, the material grade and protective coating
should be carefully evaluated before selection.
- ✓Industrial
Machinery:
Equipment
assembly and mechanical fastening in industrial machinery and
manufacturing plants using carbon steel bolts and
nuts.
- ✓Structural
Fabrication:
Structural
steel connections, fabricated assemblies, and civil construction
projects using ASTM A36 and ASTM A307 carbon steel
fasteners.
- ✓Construction
Projects:
General
construction, building structures, and civil engineering
applications requiring standard and heavy hex carbon steel
fasteners.
- ✓Piping Support
Systems:
Pipe hangers,
supports, brackets, and U-bolt assemblies in industrial and
commercial piping systems.
- ✓General
Engineering:
Bolted
connections, equipment mounting, and general mechanical assemblies
across engineering industries.
- ✓Pumps &
Valves:
Equipment bolting
for pumps, valves, and mechanical components in general industrial
service.
- ✓Equipment
Manufacturing:
Fastener
assemblies in fabricated equipment, pressure vessels, and
industrial process equipment.
- ✓Storage
Tanks:
Tank shell and
roof bolting, nozzle flange connections, and structural fastening
in above-ground and underground storage tank
systems.
- ✓HVAC
Systems:
Ductwork, air
handling equipment, and HVAC component fastening applications
using standard carbon steel fasteners.
- ✓Power Generation
Facilities:
Equipment
and structural fastening in power plants and utility
facilities.
- ✓Automotive
Components:
Mechanical
assemblies, brackets, and sub-assembly fastening in automotive
and vehicle manufacturing.
- ✓Agricultural
Equipment:
Farm machinery,
equipment frames, and structural fastening requiring economical
and reliable carbon steel fastening
solutions.
- ✓General Maintenance
Applications:
Replacement
fasteners, maintenance bolting, and general repair applications
in industrial and commercial
facilities.
Certification
Testing, Inspection & Quality of Carbon Steel Fasteners
As a dependable Carbon Steel Fastener Supplier in India, Metal-Link Steel
& Alloys can supply products with inspection and testing according to
applicable standards and project requirements. Available testing may
include:
- ✓Chemical composition
analysis
- ✓Tensile testing
- ✓Proof load
testing
- ✓Hardness testing
- ✓Dimensional
inspection
- ✓Thread gauge
inspection
- ✓Visual
examination
- ✓Coating thickness
testing
- ✓Positive Material
Identification where required
- ✓Third-party
inspection
With an established presence since 1985 and ISO 9001:2015, ISO 14001:2015 and
ISO 45001:2018 certifications, Metal-Link supports consistent product
quality. Documentation may include Material Test Certificates, mechanical
test reports, coating certificates, dimensional inspection reports, and
third-party inspection certificates.
View
Certificate →
Pan-India Supply
Carbon Steel Fastener Supplier & Stockist Across India
Metal-Link Steel & Alloys supplies Carbon Steel Fasteners to EPC
contractors, engineering companies, construction firms, process industries,
fabricators, distributors, and industrial buyers across major Indian
markets. As a Carbon Steel Fastener Supplier in India, Metal-Link supports
standard and project-specific requirements based on grade, size, thread
type, surface finish, and quantity.
Cities We Supply
MumbaiPuneAhmedabadVadodaraSurat
DelhiGurugramNoidaChennaiBengaluru
HyderabadKolkataJaipurRajkotCoimbatore
VisakhapatnamNagpurIndore
Have Questions?
Frequently Asked Questions
What grades of carbon steel fasteners do you supply?
Metal-Link supplies Carbon Steel Fasteners in
ASTM A307 Grade A and B, ASTM A193 Grade B7, ASTM A354 Grade BC,
ASTM F1554 Grade 36 and 55, and ASTM A36, subject to the required
specification and availability.
What is the difference between ASTM A307 Grade A and Grade B
fasteners?
ASTM A307 Grade A covers carbon steel bolts,
studs, and threaded rods for general-purpose mechanical and structural
applications. ASTM A307 Grade B is associated with flange bolting
applications specifically for cast iron flanges and provides a fastening
solution for compatible low-to-moderate strength flange joints.
What surface finishes are available for carbon steel
fasteners?
Carbon Steel Fasteners can be supplied in plain
finish, black oxide, zinc plating, hot-dip galvanizing, mechanical
galvanizing, phosphate coating, PTFE or fluoropolymer coatings, and
other project-specific corrosion-resistant finishes. The selected
coating should be matched to the operating environment, temperature
exposure, and thread fit requirements.
What ASTM standards apply to carbon steel fasteners?
Common ASTM standards for carbon steel fasteners
include ASTM A307 for carbon steel bolts and threaded rods, ASTM A36
for general carbon steel, ASTM F1554 for anchor bolts, ASTM A563 for
carbon and alloy steel nuts, and ASTM F844 for washers. The applicable
standard depends on the fastener type, required mechanical properties,
and project specifications.
Can carbon steel fasteners be used in corrosive
environments?
Uncoated carbon steel is susceptible to
atmospheric and chemical corrosion. For mildly corrosive environments,
protective coatings such as hot-dip galvanizing, zinc plating, or
fluoropolymer coatings may provide adequate protection. For severely
corrosive, offshore, marine, or chemical process environments, alloy
steel, stainless steel, or nickel alloy fasteners should be evaluated
as an alternative.
Can you supply material test certificates with carbon steel
fasteners?
Yes. Carbon Steel Fasteners can be supplied with
applicable Material Test Certificates (MTCs), chemical analysis,
mechanical test results, coating certificates, dimensional inspection
reports, and third-party inspection documentation as required by the
project specification.
Request a Quote
Request a Quote for Carbon Steel Fasteners
Looking for a Carbon Steel Fastener Stockist in India for your
structural, industrial, piping, construction, machinery, or general
engineering requirements? Contact Metal-Link Steel & Alloys with
your required fastener type, material grade, diameter, length, thread
type, applicable standard, quantity, coating requirement, operating
conditions, testing requirements, and documentation requirements for
availability and project-specific pricing.
