Industrial Fasteners – Types, Grades & Applications (Complete 2025 Guide)

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

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

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

Nuts secure bolts or threaded rods.

Types:

• Hex Nuts
• Nyloc Nuts
• Wing Nuts
• Flange Nuts
• Dome Nuts

Washers distribute load and prevent damage.

• Flat Washers
• Spring Washers
• Lock Washers

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

• Machine Screws
• Self-Tapping Screws
• Socket Head Screws

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

The grade defines fastener strength.

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

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

• Monel 400
• Hastelloy C276
• Inconel 625 / 718
• Titanium Grade 5

Used in extreme corrosion, high temperature, offshore, and chemical processing.

• 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.

• Corrosive → SS / Duplex / Nickel
• High temperature → Alloy steel / Inconel
• Marine → 316L / Duplex

• 8.8 for general use
• 10.9 / 12.9 for heavy equipment

• Zinc
• Hot dip galvanized
• PTFE coated (for high corrosion)

• Metric (M1–M64)
• Imperial (¼"–2")

• 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

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 across every industry.