Industrial Fasteners – Types, Grades & Applications

Fasteners may look small, but they hold together entire industrial structures, pipelines, pressure vessels, equipment, and plants. A single bolt failure can stop production, cause leakage, or even trigger accidents — especially in oil & gas, chemical plants, refineries, boilers, and offshore applications.

This 2025 guide explains:

Types of industrial fasteners
Grades & materials
Where each fastener should be used
How to choose the right fastener
Why Moksh Tubes is a trusted supplier

Everything is explained in simple, easy English.

What Are Industrial Fasteners?

Fasteners are mechanical components that join two or more parts together — either permanently or temporarily.

Why they are important

Provide strength
Maintain structural integrity
Resist vibration
Prevent leaks
Enable assembly & repair

Types of Industrial Fasteners

1. Bolts

Bolts are threaded fasteners used with nuts.

Types of Bolts:

Hex Bolts
Heavy Hex Bolts
Carriage Bolts
U-Bolts
Eye Bolts
Anchor Bolts

Used in:

Structural assemblies
Machinery
Pipelines
Flanges

2. Nuts

Nuts secure bolts or threaded rods.

Hex Nuts
Nyloc Nuts
Wing Nuts
Flange Nuts
Dome Nuts

3. Washers

Washers distribute load and prevent damage.

Flat Washers
Spring Washers
Lock Washers

4. Screws

Used for metal, wood, sheet metal, and machine assemblies.

Machine Screws
Self-Tapping Screws
Socket Head Screws

5. Studs & Threaded Rods

Used in high-pressure flanges, petrochemical plants, boilers, turbines.

Fastener Grades & What They Mean

The grade defines fastener strength.

Carbon Steel Grades

Grade 4.6 → Light duty
Grade 8.8 → Medium duty
Grade 10.9 → High tensile
Grade 12.9 → Extra high strength

Stainless Steel Grades

SS 304 → General purpose
SS 316 → Chemical, marine, pharma
SS 316L → Low carbon, corrosion resistant

Nickel Alloy Fasteners (Premium)

Monel 400
Hastelloy C276
Inconel 625 / 718
Titanium Grade 5

These are used in extreme corrosion, high temperature, offshore, and chemical processing.

Applications of Industrial Fasteners

Oil & Gas: High strength bolt-nut-washer sets for flanges & pipelines.
Petrochemical & Refineries: Corrosion-resistant fasteners for high temperature.
Chemical Processing: Nickel alloy fasteners for aggressive acids.
Marine & Offshore: SS 316 / Duplex fasteners for seawater.
Structural Projects: Carbon steel high tensile bolts.
Food & Pharma: SS 304/316 sanitary-grade screws & bolts.

How to Select the Right Fastener? (Simple Guide)

Step 1 — Identify the environment

Corrosive? → SS / Duplex / Nickel
High temp? → Alloy steel / Inconel
Marine? → 316L / Duplex

Step 2 — Choose the strength grade

8.8 for general use
10.9 / 12.9 for heavy equipment

Step 3 — Choose the coating

Zinc
Hot dip galvanized
PTFE coated (for high corrosion)

Step 4 — Select the right size & thread

Metric (M1–M64) or Imperial (¼"–2")

Why Moksh Tubes Is a Reliable Fastener Supplier

Hex bolts, nuts, washers, screws, studs
Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Nickel Alloys
High tensile 8.8 / 10.9 / 12.9
MTC 3.1 / 3.2 available
Perfect threading & machining
Export-ready packaging
Fast delivery worldwide

Conclusion

Fasteners may be small, but they decide the safety, strength, and reliability of an entire system. Choosing the right grade and material is essential — especially for high-temperature or corrosive applications.

Moksh Tubes provides fasteners that meet international standards and deliver long-term performance for every industry.

FAQ's

Which grade is best for corrosive environments?

SS 316 or Nickel Alloys.

What is the strongest bolt grade?

Grade 12.9.

Can fasteners handle high temperatures?

Yes — alloy steel & Inconel fasteners are ideal.

Do you supply coatings?

Yes — zinc, HDG, PTFE, Xylan, etc.