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Industrial Fasteners

Bolts, Nuts, Washers, Screws & Threaded Rods in SS, CS, Alloy Steel, Nickel Alloy, Duplex & Titanium grades — as per ASTM A193 / A194.

Complete Range of Industrial Fasteners

Siddhgiri Overseas manufactures and exports a complete range of industrial fasteners in all materials and sizes. Our fasteners are manufactured as per ASTM A193, A194, A307, A325, DIN and ISO standards.

We supply fasteners for oil & gas, petrochemical, power plants, construction and other industries across 40+ countries worldwide.

M6

to M100

1/4"

to 4" Dia

10+

Material Grades

40+

Countries Exported

Fasteners

Fasteners Products

Browse our complete range of fasteners available in various materials and specifications.

SS FastenersStainless Steel

SS Fasteners

Corrosion-resistant stainless steel fasteners for chemical, marine and food industry applications.

SS 304/304LSS 316/316LSS 321SS 347A2-70A4-80
  • Size: M6 – M100 / 1/4" – 4"
  • Standard: ASTM A193 B8 / A194 8M
  • Type: Hex Bolts, Nuts, Washers
  • Thread: UNC / UNF / Metric
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CS FastenersCarbon Steel

Carbon Steel Fasteners

High-strength carbon steel fasteners for structural, construction and general engineering use.

ASTM A307 Gr.BA325A490Grade 8.8Grade 10.9IS 1367
  • Size: M6 – M100 / 1/4" – 4"
  • Standard: ASTM A307 / A325
  • Type: Hex Bolts, Nuts, Washers
  • Finish: Plain / HDG / Zinc Plated
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Alloy Steel FastenersAlloy Steel

Alloy Steel Fasteners

High-temperature alloy steel fasteners for power plants, boilers and pressure vessels.

ASTM A193 B7B16A194 2HA320 L7A354 BDF11/F22
  • Size: M10 – M100 / 1/2" – 4"
  • Standard: ASTM A193 / A194
  • Type: Stud Bolts, Hex Bolts, Nuts
  • Finish: Plain / Phosphate
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Nickel Alloy FastenersNickel Alloy

Nickel Alloy Fasteners

High-performance nickel alloy fasteners for extreme corrosion and temperature environments.

Inconel 600Inconel 625Hastelloy C276Monel 400Alloy 20Incoloy 825
  • Size: M6 – M64 / 1/4" – 2.1/2"
  • Standard: ASTM B166 / B164
  • Type: Hex Bolts, Nuts, Washers
  • Thread: UNC / UNF / Metric
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Duplex FastenersDuplex

Duplex & Super Duplex Fasteners

High-strength duplex fasteners for offshore, subsea and chemical processing applications.

Duplex 2205S31803Super Duplex 2507S32750S32760Zeron 100
  • Size: M6 – M64 / 1/4" – 2.1/2"
  • Standard: ASTM A182 / NORSOK
  • Type: Hex Bolts, Nuts, Washers
  • Thread: UNC / UNF / Metric
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Titanium FastenersTitanium

Titanium Fasteners

Lightweight, high-strength titanium fasteners for aerospace, chemical and marine applications.

Titanium Gr.2Titanium Gr.5ASTM F467ASTM F468AMS 4928DIN 267
  • Size: M4 – M36 / 3/16" – 1.1/2"
  • Standard: ASTM F467 / F468
  • Type: Hex Bolts, Nuts, Washers
  • Thread: UNC / UNF / Metric
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Hex Bolts & NutsHex Bolts & Nuts

Hex Bolts, Nuts & Washers

Standard hex bolts, hex nuts and washers for general engineering and structural applications.

Hex BoltHex NutHeavy Hex NutFlat WasherSpring WasherAll Materials
  • Size: M6 – M100
  • Standard: DIN 931 / ISO 4014
  • Grade: 4.6 / 8.8 / 10.9 / A2 / A4
  • All Materials Available
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Threaded Rods & ScrewsThreaded Rods

Threaded Rods & Screws

Fully threaded rods, machine screws and set screws for industrial and construction use.

Threaded RodAll Thread RodMachine ScrewSet ScrewEye BoltAll Materials
  • Size: M6 – M100 / 1/4" – 4"
  • Length: Up to 3000mm
  • Standard: DIN 975 / ASTM A193
  • All Materials Available
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Standards & Specifications

ASTM A193

Alloy Steel Bolting Materials

ASTM A194

Nuts for High Pressure

ASTM A307

CS Bolts & Studs

ASTM A325

High Strength Bolts

DIN 931 / 933

Hex Bolts

ISO 4014

Hex Head Bolts

ASTM F467

Titanium Nuts

IS 1367

Technical Supply Conditions

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