Product Category

Industrial Fastener Manufacturer Chennai

High tensile and stainless steel fasteners built to safety standards. As a trusted Industrial Fastener Manufacturer Chennai, we produce hex bolts, heavy hex bolts, nuts and washers to DIN, IS and ASTM standards in carbon steel, stainless steel and alloy grades.

Grade Range4.6 · 8.8 · 10.9 · 12.9 · A2 · A4

Size RangeM5 to M100+ (custom available)

StandardsDIN · IS · ASTM

FinishPlain · Zinc · HDG · Black Oxide

MOQ100 pcs

Product Overview

High Tensile & Stainless Steel Industrial Fasteners

Are you looking for strong industrial fasteners that meet safety standards? As a trusted Industrial Fastener Manufacturer Chennai, Mishkat Pipe Fittings Co. produces quality hex bolts, heavy hex bolts, nuts, and washers. Using weak fasteners causes costly equipment failures and project delays. Our products handle heavy structural loads, high pressure, and bad weather. We deliver tested fasteners that keep your industrial projects running safely and smoothly.

✓ DIN / IS / ASTM Standards ✓ Grade 4.6 to 12.9 ✓ EN 10204 MTC Available

Fasteners manufactured by Mishkat Pipe Fittings Co.

Product Range

Complete Range of Heavy Industrial Fasteners

Mishkat Pipe Fittings Co. manufactures a wide selection of bolts, nuts, and washers for domestic and global markets. We supply metric DIN, ISO, and IS standards for local Indian projects. We also produce ASTM standard fasteners for international technical requirements.

Heavy Hex Bolts and Structural Screws

We produce heavy hex bolts that secure steel structures, heavy machinery, and processing plants. These bolts provide strong hold under intense friction and pressure.

Nuts, Threaded Rods, and Flat Washers

Our team manufactures matching hex nuts, threaded rods, and spring washers. These items maintain firm tension and stop joint slipping in high-vibration systems.

Multi-Grade Carbon and Alloy Steel Fasteners

We maintain full stock in grades from 4.6 up to 12.9. You get top-grade carbon and alloy steel products with short lead times for urgent project needs.

High Tensile

Superior Product Quality from a High Tensile Fastener Manufacturer Chennai

Heavy industries need fasteners that resist extreme strain, impact, and fatigue. Collaborate with a reputed High Tensile Fastener Manufacturer in Chennai for your bolted connections to meet high pressure. We manufacture Class 8.8, 10.9, and 12.9 Class High Tensile structural bolts using high-grade steel. These bolts are suitable for use in power plants, bridges, and manufacturing units.

All our high tensile bolt batches are subjected to tensile, hardness, and dimensional tests. We provide Mill Test Certificates with every order to ensure metal quality and load carrying capacity. We supply official Mill Test Certificates with every order to prove metal purity and load capacity.

Corrosion Protection

Corrosion Protection from a Stainless Steel Fastener Manufacturer Chennai

Chemical plants, marine setups, and outdoor projects face constant moisture and chemical rust. As a premier Stainless Steel Fastener Manufacturer Chennai, Mishkat Pipe Fittings Co. supplies top-tier A2 (304) and A4 (316) stainless steel fasteners. A4 grade fasteners resist salt water and acid corrosion, keeping your critical joints safe for years.

We provide surface finishes for carbon steel fasteners such as hot-dip galvanizing, zinc plating and black oxide. Protect your bolts from wear due to outdoor use.

Custom Manufacturing

Custom Fastener Solutions for Complex Engineering Needs

Off-the-shelf bolts may not fit your equipment or customized structure. By choosing a reliable Custom Fastener Manufacturer in Chennai, you can ensure precise dimensions, uncommon thread pitches and unique heads. We produce custom fasteners as per your engineering drawings, blueprint or particular load range.

In Chennai custom fastener manufacturing, we can provide a custom piece or a huge bulk order above several tons without compromising on speed.

Why Mishkat

Why Choose Mishkat Pipe Fittings Co. as Your Industrial Fastener Manufacturer Chennai?

Finding a reliable supply partner keeps your factory operations and site work on schedule. Choosing Mishkat Pipe Fittings Co. as your Industrial Fastener Manufacturer Chennai gives you top material quality, factory-direct prices, and dependable local delivery.

1. Trusted by Top Industry Leaders

We supply major Indian companies like IOCL, BPCL, HPCL, Thermax, Siemens, Emerson, L&T, ONGC, and CPCL. Our quality helps us stay a preferred supplier for top industrial brands.

2. Strict Dimensional and Quality Checks

Every fastener batch meets DIN, IS, and ASTM norms. Our lab tests thread accuracy, load limits, and metal density before shipping.

3. Fast Delivery Across Major Markets

We hold large stock reserves of standard sizes to ship orders fast. We help you avoid costly site downtime with quick dispatch schedules.

4. Clear Test Documentation

We provide complete material traceability with every delivery. You get official MTC documents that confirm chemical and mechanical test results clearly.

Project Value

How Our Industrial Fasteners Drive Real Value for Your Projects

Using precision-engineered fasteners keeps your industrial installations safe and reduces maintenance costs over time:

Distribution of Load: Correctly designed bolts and washers distribute the load evenly across steel connections.
Ability To Withstand Heat: The alloys and grades of stainless steels are able to perform at high temperatures during operation in refineries.
Vibration Protection: High strength nuts and spring washers protect against vibrations during operation.
Long Life: Protective galvanizing prevents rust formation on the surface, therefore reducing the costs of future replacements.

Relying on a leading Industrial Fastener Manufacturer Chennai helps you build safe, durable structures that last.

Industries

Serving Key Industries Across India and Global Markets

Mishkat Pipe Fittings Co. supplies heavy-duty fasteners to major industrial sectors:

Oil and Gas Refineries

High-alloy bolts for pressure vessels, pipe flanges, and heat exchangers.

Construction and Infrastructure

Heavy structural bolt sets for steel bridges, high-rise buildings, and flyovers.

Power and Energy Plants

Corrosion-resistant fasteners for steam turbines, boilers, and power lines.

Marine and Shipbuilding

Marine-grade stainless steel bolts that resist salt water corrosion.

Industrial Equipment OEMs

Precision bolts and nuts for heavy machinery assembly.

Product Range

Fastener Types

Hex Head Bolts

Full & partial thread, Grade 4.6 to 12.9

Heavy Hex Bolts

For structural and high-load applications

Hex Nuts

Standard, heavy hex and coupling nuts

Flat Washers

DIN 125 / IS 2016 in all sizes

Spring Washers

DIN 127 split lock washers

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Specifications — Hex Head Bolts

Parameter	Details
Standards	IS 1363/1364/1367, DIN 931/933/934, ASTM A307/A325/A490
Grade Range	4.6, 4.8, 5.6, 6.8, 8.8, 10.9, 12.9
Size Range	M5 to M100+ (custom available)
Materials	Low Carbon Steel, Medium Carbon Steel, Alloy Steel, SS 304, SS 316, Brass
Finish Options	Plain, Zinc Electroplated, Hot-Dip Galvanized, Black Oxide, Geomet

Technical Data

Mechanical Properties by Grade

Metric Grade	Min Yield (MPa)	Min UTS (MPa)	Hardness (HB)	Common Use
4.6	240	400	114–209	Light structural, general fixing
4.8	320	420	124–238	Sheet metal, light machinery
5.6	300	500	147–238	Structural steelwork, medium load
6.8	480	600	181–286	Medium-high load general engineering
8.8	640	800	245–335	High-strength structural (most common)
10.9	900	1040	304–394	Very high-strength structural, automotive
12.9	1080	1220	366–444	Extreme-strength, friction-grip connections

Values per ISO 898-1. Stainless steel grades: A2-70, A2-80, A4-70, A4-80 also available. Grades 4.6 to 8.8 are held as standard stock; Grade 10.9 and non-ferrous alloy grades are manufactured to order.

Compliance

Standards & Specifications

DIN 931

Hex Bolt (Partial Thread)

German standard hex-head bolt with partial thread body.

DIN 933

Hex Bolt (Full Thread)

Hex bolt threaded to head. Most common general-purpose fastener.

DIN 934

Hex Nut

Standard hex nut in metric thread pitch.

DIN 125

Flat Washer

Standard plain washer dimensions.

DIN 127

Spring Washer

Split lock washer for vibration resistance.

IS 1363 / 1364

Indian Standard Bolts/Nuts

BIS hex bolts and nuts used in domestic Indian projects.

IS 1367

IS Threaded Fasteners

Indian standard for mechanical properties and testing of fasteners.

ASTM A307

CS Bolts (Grade A/B)

Low carbon steel bolts for general structural applications.

ASTM A325 / A490

High-Strength Structural

Structural bolts for steel construction — common in buildings and bridges.

ASTM A563

Hex Nuts

Standard covering hex nuts for use with ASTM A307/A325/A490 bolts.

EN 10204 3.1

Material Certificate

MTC with heat number and mechanical test results.

Materials

Material Grades & Finishes

Carbon Steel

Low Carbon Steel (Grade 4.6 / 4.8)Medium Carbon Steel (Grade 8.8)Alloy Steel (Grade 10.9 / 12.9)

Stainless Steel

A2-70 (SS 304)A2-80 (SS 304 — higher strength)A4-70 (SS 316)A4-80 (SS 316 — higher strength)

Other Materials

Brass (Cu-Zn alloy)Duplex SS 2205Titanium

Surface Finishes

Plain (self-colour)Yellow Zinc ElectroplatedHot-Dip Galvanized (HDG)Black OxideGeomet

FAQs

Frequently Asked Questions

Q1: What is the minimum order quantity for fasteners?

We handle flexible order sizes to meet your project requirements. You can order small single-piece requirements for emergency repairs or multi-ton bulk orders for major construction projects.

Q2: What is the turnaround time for industrial fasteners?

In stock and ready to ship items such as standard hex bolts, nuts and couplers within 24 to 48 hrs. Custom fasteners and big batch projects normally take 1 to 2 weeks depending on design specifications and coating options.

Q3: Do you provide Mill Test Certificates (MTC) for fasteners?

Yes, every lot has a verified Mill Test Certificate. All certificates include the full chemical composition, mechanical load test data, dimension, and heat number traceability.

Q4: Do you provide Grade 8.8 and above structural bolt sets?

Yes, we hold and produce high tensile structural bolts in Grade 8.8, 10.9 and 12.9 rated on International and American standards for major structural applications.

Q5: Do you offer Hot Dip Galvanized (HDG) and custom non standard fasteners?

Yes, we carry the hot dip galvanized coating for long term rust resistance for exterior applications. We also provide non-standard custom fasteners built according to your specific drawings, thread types and dimensions.