Repsol Steel LLP is a trusted industrial nuts and bolts supplier for buyers across the USA, Europe, Africa, Mexico, and Oman. We supply a comprehensive range of industrial nuts and bolts — including hex bolts, stud bolts, anchor bolts, hex nuts, lock nuts, and washers — in stainless steel, carbon steel, alloy steel, and exotic alloys for Oil & Gas, petrochemical, refinery, structural, and industrial applications.
With over 25 years of combined industry experience and a proven export network, we serve EPC contractors, procurement teams, maintenance engineers, and fabrication units worldwide. Every industrial nut and bolt we supply complies with ASTM A193, ASTM A194, ASTM A320, ASTM A325, ASTM A490, ASME B18.2.1, ASME B18.2.2, and ISO 898 standards, with full material traceability, mechanical test reports, and documentation that meets the requirements of projects in the USA, Europe, Africa, Mexico, and Oman.
Whether you require standard SS316 hex bolts with 2H nuts for a petrochemical plant in Europe, B7 stud bolts with 2H nuts for a refinery in the USA, or Grade 8.8 nuts and bolts for a structural project in Africa or Oman — Repsol Steel LLP delivers the right industrial nuts and bolts solution, on time, with complete export documentation.
A complete industrial nuts and bolts portfolio covering hex bolts, stud bolts, anchor bolts, hex nuts, lock nuts, and washers — engineered for reliable bolting across global markets.
Standard hex head bolts for flanged joints, structural connections, and general industrial fastening. Available in stainless steel, carbon steel, and alloy steel.
Compliance: ASME B18.2.1, ASTM A193
Materials: SS304, SS316, B7, B7M, B16
Size Range: ½" to 4"
Standard hex nuts to pair with bolts and studs for flanged joints. Available in stainless steel, carbon steel, and alloy steel in various grades.
Compliance: ASME B18.2.2, ASTM A194
Grades: 2H, 2HM, 4, 7, 8, 8M
Size Range: ½" to 4"
Double-end stud bolts for flanged joints with through-holes. The standard choice for pipeline flanges, valve bonnets, and high-pressure flanged connections.
Compliance: ASME B18.31.2, ASTM A193
Materials: B7, B7M, B16, SS304, SS316
Size Range: ½" to 4"
Anchor bolts for securing structural steel, machinery, and equipment to concrete foundations. Available in L-bend, J-bend, and straight configurations.
Compliance: ASTM F1554, ASTM A307
Materials: Carbon Steel, SS304, SS316
Size Range: ½" to 4"
Lock nuts and nylon insert nuts for vibration-resistant fastening. Available in stainless steel and carbon steel for industrial and structural applications.
Compliance: ASME B18.16.6, DIN 985
Materials: SS304, SS316, Carbon Steel
Size Range: ½" to 4"
Flat and hardened washers for load distribution, plus custom nuts and bolts in non-standard sizes, materials, and coatings per project specifications.
Compliance: ASME B18.22.1, ASTM F436
Materials: SS304, SS316, Carbon Steel
Size Range: ½" to 4"
Industrial nuts and bolts are supplied in different materials and grades to suit specific pressure, temperature, and application requirements. The material grade determines the mechanical strength, corrosion resistance, and temperature capability of the nuts and bolts. We supply industrial nuts and bolts in the following materials and grades:
All industrial nuts and bolts we supply are accompanied by Material Test Certificates (MTC) confirming the exact grade, mechanical properties, and heat number — ensuring full traceability and compliance with international project specifications.
| Parameter | Specification |
|---|---|
| Bolt Types | Hex Bolts, Stud Bolts, Anchor Bolts, Structural Bolts, Custom Bolts |
| Nut Types | Hex Nuts, Lock Nuts, Nylon Insert Nuts, Heavy Hex Nuts, Custom Nuts |
| Materials | Stainless Steel (SS304, SS316, SS321), Carbon Steel, Alloy Steel (B7, B7M, B16, L7, L7M), High Tensile (8.8, 10.9, 12.9), Exotic Alloys (Monel, Inconel, Hastelloy, Duplex) |
| Bolt Grades | ASTM A193 B7, B7M, B16; ASTM A320 L7, L7M; ASTM A325, A490, F3125; ISO 898-1 Grade 8.8, 10.9, 12.9; SS304, SS316, SS321 |
| Nut Grades | ASTM A194 2H, 2HM, 4, 7, 8, 8M; ASTM A563; ISO 898-2 Grade 8, 10, 12; SS304, SS316 |
| Size Range (Imperial) | ¼" to 4" standard; larger sizes available on request |
| Size Range (Metric) | M6 to M100 standard; larger sizes available on request |
| Thread Types | UNC, UNF, BSW, Metric (M) — per ASME B1.1 and ISO 261 |
| Coatings | Plain, Zinc Plated, Hot-Dip Galvanized, Xylan, PTFE, Cadmium, Dacromet, Geomet |
| Standards Compliance | ASTM A193, A194, A320, A325, A490, F3125, A307, A563; ASME B18.2.1, B18.2.2, B18.31.2; ISO 898-1, ISO 898-2 |
| Export Documentation | Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, MTC (EN 10204 3.1) |
| Inspection Options | Third-party inspection (SGS, BV, TUV, Intertek) available on request |
Correct selection of industrial nuts and bolts is critical to ensuring a leak-free flanged joint, reliable structural connection, and long-term operational safety. The bolt grade, nut grade, material, and coating must be matched to the operating pressure, temperature, and application. Our technical team recommends evaluating four key factors before finalizing industrial nuts and bolts:
If you are unsure which industrial nuts and bolts specification best suits your application, our technical team is available to review your flange drawings, structural requirements, and project specifications — and recommend the most suitable nuts and bolts solution.
We specialize in industrial nuts and bolts supply — offering hex bolts, stud bolts, anchor bolts, hex nuts, lock nuts, and washers in stainless steel, carbon steel, alloy steel, and exotic alloys. All products are manufactured to ASTM, ASME, and ISO standards.
We supply a complete range of industrial bolts and nuts — in ASTM, ISO, and DIN grades, from ¼" to 4" (M6 to M100) as standard, with larger sizes, custom configurations, and matched bolt-nut assemblies on request.
Every industrial nuts and bolts batch is backed by Material Test Certificates (MTC) and mechanical test reports, and can be supplied with NACE compliance documentation, dimensional inspection reports, and third-party certification on request.
Non-standard sizes, materials, coatings, and nuts and bolts configurations are manufactured according to drawings, equipment specifications, and project requirements — with quick turnaround times.
We supply industrial nuts and bolts to clients in the USA, Europe, Africa, Mexico, and Oman — with packaging, documentation, and compliance structured for international procurement.
Our experienced technical team assists with nuts and bolts selection, grade recommendations, and installation guidance. Post-supply support includes documentation follow-up and replacement coordination.
Repsol Steel LLP supplies industrial nuts and bolts to a wide range of process industries across USA, Europe, Africa, Mexico, and Oman — where reliable bolting performance is essential for safety and operational reliability.
Nuts and bolts supplied for wellhead equipment, Christmas trees, pipeline flanges, and high-pressure process piping in upstream, midstream, and downstream operations.
Bolting solutions supplied for reactors, heat exchangers, process piping, and storage systems handling hydrocarbons at high pressures and temperatures.
High-strength structural nuts and bolts supplied for steel-to-steel connections in bridges, buildings, industrial structures, and infrastructure projects.
High-temperature nuts and bolts supplied for boilers, steam systems, turbine connections, and high-pressure auxiliary piping in thermal and nuclear power plants.
SS316 and exotic alloy nuts and bolts supplied for aggressive chemical and corrosive media applications in reactors, storage tanks, and process equipment.
Industrial nuts and bolts supplied to fabrication units and EPC contractors for piping spools, skids, modular structures, and industrial assemblies.
Repsol Steel LLP is recognized as a reliable industrial nuts and bolts supplier for international procurement teams, EPC contractors, and maintenance projects. Our export documentation, packaging, and standard compliance are structured for smooth cross-border supply to buyers in the USA, Europe, Africa, Mexico, and Oman — ensuring your industrial nuts and bolts arrive on time, in specification, and ready for installation.
USA: Nuts and bolts supply for Oil & Gas, petrochemical & structural projects
Europe: Nuts and bolts for construction, refinery & process industries
Africa: Nuts and bolts for infrastructure, refinery & power projects
Mexico: Nuts and bolts supply for chemical plants, refinery & automotive projects
Oman: Nuts and bolts for Oil & Gas, construction & power projects
All industrial nuts and bolts are supplied with material certificates, mechanical test reports, and third-party certification as required by project specifications.
We supply hex bolts, stud bolts, anchor bolts, hex nuts, lock nuts, nylon insert nuts, heavy hex nuts, and washers in stainless steel, carbon steel, alloy steel, and exotic alloys — for flanged joints, structural connections, and industrial applications.
We supply bolts in ASTM A193 B7, B7M, B16; ASTM A320 L7, L7M; ASTM A325, A490, F3125; ISO 898-1 Grade 8.8, 10.9, 12.9; and SS304, SS316, SS321 grades. Nuts are supplied in ASTM A194 2H, 2HM, 4, 7, 8, 8M; ASTM A563; ISO 898-2 Grade 8, 10, 12; and SS304, SS316.
We supply nuts and bolts with Plain, Zinc Plated, Hot-Dip Galvanized, Xylan, PTFE, Cadmium, Dacromet, and Geomet coatings — selected based on atmospheric conditions, temperature, and application requirements.
We supply industrial nuts and bolts primarily to the USA, Europe, Africa, Mexico, and Oman, serving Oil & Gas, petrochemical, structural, power, subsea, and chemical processing projects in these regions.
Yes. We offer custom sizes, materials, coatings, and nuts and bolts configurations based on drawings, equipment specifications, and project requirements — with quick turnaround times for export orders.
Send us your bolt and nut specifications, grade requirements, or drawings. Our export team will respond within 24 hours with a tailored quotation.
Repsol Steel LLP is a leading manufacturer and stockholder of high-quality piping products, serving the Oil, Gas, Petrochemical, and Nuclear industries with reliable engineering solutions.
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