Industrial Fasteners | Custom and Standard Fastener Manufacturer

ASTM, ASME, DIN, ISO, SAE Compliant Fasteners for the Heavy Equipment, Aerospace, Construction, Power Generation, and Oil & Gas Industries

Industrial fasteners from standard bolts and nuts to specialized fasteners are manufactured in South Korea for the oil and gas, onshore and offshore projects, power generation, shipbuilding, and defense industries for manufacturing LNG vessels, cryogenic valves, and plate heat exchangers. Application-specific manufacturing allows us to produce fasteners in a wide range of material grades, sizes, and threads for the required yield strength, tensile strength, and temperature requirements.


Industrial fasteners have been widely used by suppliers for onshore and offshore plants, plant maintenance and repair, LNG vessels, desalination plants, cryogenic valves, EPC projects, and other heavy equipment manufacturers. With a high rate of returning clients, our industrial fasteners guarantee high quality and competitive pricing and lead times. Each order of industrial fasteners, both standard or custom drawing fasteners are manufactured upon order, and undergo strict quality control including rotational capacity testing.

Please contact us for more information or connect with a product specialist at [email protected].

Industrial Fasteners for Onshore and Offshore EPC projects


Standard Bolts and Cryogenic-treated Fasteners for Cold Environments

From standard industrial fasteners to specially treated industrial fasteners for extreme environments, our industrial fastener manufacturer in South Korea produces each order in batch as required based on your drawing, grade, dimension and standards for a wide range of applications in the energy and defense industries.


We provide stud bolts, anchor bolts, and large diameter industrial fasteners. Our cryogenic-treated bolts are suitable for demanding low temperature requirements such as LNG vessels, plate heat exchangers and cryogenic valves.


The manufacturing site in Busan South Korea supplies industrial fasteners in ASTM, ASME, DIN, ISO and JIS standards. Bolts and nuts are produced based on customers’ drawings and specifications.

Hex Bolt | EPC & MRO

Hex Bolt

Socket Cap Screw | Industrial Fasteners

Wrench Bolt

Stud Bolts | EPC & MRO

Stud Bolt

U Bolts | Industrial Fasteners


Hex Nut | EPC & MRO

Hex Nut

Special Nut | EPC & MRO

Special Nut

Industrial Washers | Industrial Fasteners


Industrial Fasteners | EPC & MRO

Industrial Bolt

Other Fasteners | Industrial Fasteners

Other Industrial Fasteners

Standard Bolts | Industrial Fasteners

Our industrial fasteners and specialty bolts are made with a variety of metals including stainless steel, alloy steel, nickel alloy steel, and carbon steel (low, medium, cold drawn, heat treated). Since our fasteners are manufactured in small batches for specific applications, our capabilities also include producing large diameter bolts for the power generation industry, power plants, and wind turbines.

  • SAE J429: Grade 1, 2, 4, 5, 5.1, 5.2, 7, 8, 8.1, 8.2, etc
  • SAE J995: Grade 2, 5, 8
  • ASTM A193/193M: Grade B6, B7, B16, Class 1 Grade B8M, etc
  • ASTM A194/194M: Grade 1, 2.2H, 4, 6, 7, 8, 8M, etc
  • ASTM A307: Grade A, B
  • ASTM A320/320M: Grade L7, Class 1 Grade B8, Class 1 Grade B8M
  • ASTM A325: Type 1, 2
  • ASTM A449: Type 1, 2
  • ASTM A490: Type 1, 2, 3
  • ASTM A490M: Type 1, 2
  • ASTM A563: Grade O, A, B, C, D, DH
  • ASTM A563M: Grade 8S, 10S
  • JIS B1051, JIS B1186, B1052
  • KS B0233, KS B1010, KS B0234

Our standard industrial fasteners consists of hex bolt, heavy hex bolt, high strength hex bolt, nut, wrench bolt, stud bolt, u-bolt, square bolt, anchor bolt, washer, and more. Please refer to the following brochures for specifications of our standard bolts and nuts and sample dimensions, chemical property, and mechanical property.

Standard Fastener Chemical and Mechanical Properties:

pdf-iconChemical Properties of Steel Fasteners

pdf-iconMechanical Properties of Steel Fasteners

Industrial Fasteners for EPC Projects

Global EPC companies with multiple projects all over the world often require local suppliers for projects overseas. For your new or ongoing projects in the Asian region or the west coast of North America, working with a strong, quality-assured fastener manufacturer from South Korea will save both time and cost.

Our industrial fasteners are supplied to Power plants, ship building industry, wind power and energy industry, engine part manufacturers, heavy equipment manufacturers and global EPC companies with global projects including projects in Asia.


Our Clientele


  • Daewoo Shipbuilding & Marine Engineering | DSME
  • Daewoo Ship Engineering Company | DSEC
  • Mitsubishi Heavy Industry
  • Hyundai Yacht

Power Generation


Heat Exchanger Manufacturer

  • DongHwa Entec

Heavy Industry and Construction

  • Doosan Heavy industry
  • Doosan Engineering & Construction Co. Ltd

Oil and Gas | Petroleum

  • S-OIL (petroleum and refinery)
  • Basic modules in cutting, welding, filling machines


Industrial Fasteners Application

Fastener Production Capabilities

Our industrial nuts and bolts are used by a wide range of industries. Below shows the average annual production capacity.

Application | Item Ton/Year Ton/Month
Petrochemical Plant | Stud Bolt, Anchor, etc.
Diesel Engine Parts | Hold Down Bolts, etc.
Boiler and Pressure Vessels | Stud Bolt
Heat Exchanger and Fresh Water Generator | Tightening Bolt
Gas Turbine Parts | Casing Bolt, Reamer Bolt, etc.
Chemical Process Equipment Parts
Construction | H/T, T/S, etc
Heavy Equipment Parts | Special Bolt
Standard Bolt and Nut, etc

Industrial Fastener Project Experience

Technip FranceShell Prelude FLNGOct 2013
Algiers Refinery ProjectMar-Oct 2013
Samsung Heavy Industries
Shell Prelude FLNGMar 2013
SK Engineering & Construction
Wasit Gas PlantMar-Oct 2013
Bechtel International
Australia Pacific LNGMar-Oct 2013
Santos GLNGMay-Sept 2013
JGC CorporationBarzan Gas ProjectMay-Apr 2013
Technicas Reunidas
Sadara Chem-IIIApr-Oct 2013
Snamprogetti Canada Inc.
Husky Sunrise EnergyApr-Sept 2013
Foster WheelerSadara Propylene Oxide PlantMay 2013

Industrial Fastener Manufacturing Facility Certifications

  • ISO 9001:2008
  • ISO 14001:2004
  • OHSAS 18001:2007 (ABS)
  • ASTM A193/A194

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