Alloy Steel AISI 4130 Fasteners, Alloy Steel AISI 4130 Hex Head Screw, WNR 1.7218 Alloy Steel Star Washers, Alloy UNS G41300 Threaded Stud, Alloy Steel AISI 4130 Structural Bolts, Alloy Steel AISI 4130 Hexagon Nut, Alloy Steel AISI 4130 Foundation Bolts, Alloy Steel AISI 4130 Plain Washer Stockholder, Alloy Steel AISI 4130 Industrial Fasteners Manufacturers in India.
Unifit Fastener is a reputable producer and distributor of alloy steel AISI 4130 fasteners of high quality, designed to perform under the most challenging industrial performance. We offer a complete range of AISI 4130 fasteners, including bolts, nuts, screws, stud bolts, threaded rods, and washers, all manufactured from high-quality bar stock and forgings. All its components are produced to meet international standards, giving them high strength, dimensions, and uniform performance.
The fasteners of AISI 4130 are also famous in terms of their heat resistance, weldability, and corrosion protection. They come with a chromium molybdenum structure, which provides high tensile strength, creep resistance, and fatigue strength in high-pressure and high-temperature situations. Our fasteners are AISI 4130, which offers a perfect compromise of toughness and machinability, which means a long life of service and dependability in high-pressure service. Alloy Steel 4130 screwing has been appreciated due to its high mechanical properties in terms of high rupture strength, formability, and good reliability to resist general corrosion, pitting corrosion, and surface wear.
They are used in these fasteners in severe environments where the atmosphere is polluted by the sea or is in corrosive chemical processing plants. The products of the company can be used in many industrial fields, including petrochemical, oil and gas, aerospace, automotive, and power generation. Through all-time material management, accuracy of manufacture and quality testing, we manufacture safe, stable and reliable fastening solutions in high-performance systems across the globe.
Request QuoteWhat is AISI 4130?
AISI 4130 is one of those steels people turn to when they need something tough but easy to work with. It’s a low alloy steel with chromium and molybdenum mixed in to make it stronger. You’ll find it under the SAE AISI 4000 series. What makes it stand out is how well it welds and how it doesn’t crack under pressure. Engineers use it for all sorts of stuff — fasteners, aircraft parts, even race car frames and pressure tanks. It also works well out at sea like on drilling rigs. Basically if something needs to stay strong and reliable this steel usually gets the job done.
Alloy Steel AISI 4130 Fasteners, Alloy Steel AISI 4130 Lock Nut, UNS G41300 Alloy Eye Bolts, Alloy Steel AISI 4130 Threaded Stud, Alloy Steel AISI 4130 Marine Anchors, Alloy Steel AISI 4130 Hex Cap Screws, WERKSTOFF NR. 1.7218 Hex Head Nut, Alloy Steel AISI 4130 Bolts and Screws, Alloy Steel AISI 4130 Nut, Alloy Steel AISI 4130 Allen Cap Screw Supplier & Exporter.
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Types of AISI 4130 Fasteners
We make and supply a complete range of AISI 4130 fasteners built for industries where parts need to perform under pressure. Whether it’s for heat heavy loads or tough conditions our fasteners are made to keep up. Here are some of the AISI 4130 fastener types we offer:
- AISI 4130 Structural Bolts
- AISI 4130 Heavy Hex Bolts
- AISI 4130 Hex Bolts
- AISI 4130 Hexagon Head Bolts
- AISI 4130 Machine Bolts
- Alloy Steel AISI 4130 T Bolts
- Alloy Steel Grade 4130 Eye Bolt
- AISI 4130 Foundation Bolts
- Alloy Steel 4130 J Bolts
- AISI 4130 Button Head Bolt
- AISI 4130 Anchor Bolts
- AISI 4130 Long Bolts
- AISI 4130 Carriage Bolt
- AISI 4130 Elevator Bolt
- AISI 4130 Timber Bolts
- AISI 4130 Square Bolt
- AISI 4130 Metric Bolt
- AISI 4130 Plow Bolts
- Alloy Steel 4130 U Bolts
- AISI 4130 Flange Bolts
- AISI 4130 Hex Nuts
- AISI 4130 Heavy Hex Nuts
- AISI 4130 Wing Nuts
- AISI 4130 Hexagon Nuts
- AISI 4130 Cap Nuts
- AISI 4130 Square Nuts
- AISI 4130 Coupling Nuts
- AISI 4130 Hex Jam Nuts
- Alloy Steel Gr 4130 T-Nuts
- AISI Grade 4130 Eye Nuts
- AISI 4130 Nylock Nuts
- Alloy Steel 4130 High Tensile Nuts
- AISI 4130 Cage Nuts
- AISI 4130 Dome Nuts
- AISI 4130 Knurled Nuts
- AISI 4130 Keps-K Lock Nuts
- AISI 4130 Machine Hex Nuts
- AISI GR 4130 Slotted Nuts
- AISI 4130 Plain Washers
- AISI 4130 Spring Washers
- AISI 4130 Locking Washer
- AISI 4130 Split Washer
- Alloy Steel Gr 4130 Flat Washers
- AISI 4130 Ogee Washers
- AISI 4130 Fender Washer
- AISI 4130 Conical Washers
- AISI 4130 Serrated Washer
- AISI 4130 Tab Washers
- AISI 4130 Hex Washer
- AISI 4130 Countersunk Washer
- Alloy Steel 4130 Dock Washers
- AISI GR.4130 Spring Lock Washer
- AISI 4130 Star Washer
- AISI 4130 Bonded sealing Washer
- AISI 4130 Square Washers
- AISI GR 4130 Belleville Washer
- AISI 4130 Socket Set Screw
- AISI 4130 Self Drilling Screw
- AISI 4130 Socket Head Cap Screw
- AISI 4130 Hex Head Screws
- AISI 4130 Wood Screw
- Alloy Steel 4130 Eye Screw
- AISI 4130 Wing Screw
- AISI 4130 Self Tapping Screws
- AISI 4130 Roofing Screw
- AISI 4130 Phillips Head Screw
- AISI 4130 Decking Screw
- AISI 4130 Machine Screw
- AISI 4130 Thumb Screw
- AISI 4130 Drywall Screws
- AISI 4130 Chipboard Screw
- AISI 4130 Metric Set Screws
- AISI 4130 Sems Screw
- AISI 4130 Thread Rolling Screw
- AISI 4130 Full Threaded Stud Bolts
- AISI 4130 Half Threaded Stud Bolts
- Alloy Steel 4130 Threaded Rod
- AISI 4130 Double Ended Studs
- AISI 4130 Tap End Stud Bolt
- Alloy Steel 4130 Tie Rods
- Alloy Steel Grade 4130 Studs
- AISI 4130 Single End Stud Bolts
- AISI 4130 Reduced Shank Stud Bolt
- AISI 4130 Continuous Threaded Stud
- AISI 4130 Partial Threads Stud Bolt
- Alloy Steel AISI 4130 Heavy Stud Bolts
We offer sizes starting from M02 all the way up to M100 with lengths going up to 5 meters. If you need something specific we can customize it to match your requirements and meet global standards. These fasteners are built to be tough, versatile and long lasting which makes them a solid choice for critical use across different industries.
Chemical Composition of AISI 4130 Fasteners (SAE 4130)
AISI 4130 fasteners are widely used in aerospace, automotive and oil & gas because of their strength, weldability and corrosion resistance. Their balanced chemical composition makes them reliable for critical high-performance parts, helping industries choose the right material for demanding applications.
| Material | Percentage (%) |
|---|---|
| Carbon (C) | 0.28 – 0.33 |
| Manganese (Mn) | 0.40 – 0.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Silicon (Si) | 0.15 – 0.30 |
| Chromium (Cr) | 0.80 – 1.10 |
| Molybdenum (Mo) | 0.15 – 0.25 |
| Iron (Fe) | 97.03 – 98.22 |
SAE 4130 has just the right mix of elements that make it a solid choice for parts that deal with stress and heat. It’s tough, holds up well over time and gives a bit of corrosion protection too. That’s why it’s often used in fasteners like bolts, nuts and studs for jobs where pressure and temperature run high.
AISI 4130 Equivalent Grades for Fasteners
When you're working with AISI 4130 fasteners it really helps to know what the equivalent grades are in different standards. Not every project uses the same system and having the right match can save a lot of trouble later. Whether you're getting your materials locally or from somewhere else you want to make sure the fasteners will perform the way you need. Here’s a quick look at the most commonly used equivalents for AISI 4130 fasteners:
| AISI | UNS | WERKSTOFF NR. |
|---|---|---|
| Grade 4130 | G41300 | 1.7218 |
AISI 4130 fasteners specification
AISI 4130 Fasteners are manufactured as per ASTM A193, ASTM A194 / ASME SA193, SA194 GR, and other global standards such as DIN, ISO, JIS, GB, IS and BS. Available in sizes M02 to M160 and lengths 3mm to 200mm, we also offer custom dimensions to meet specific project requirements.
| Specification | Details |
|---|---|
| Specifications | ASTM A193, ASTM A194 / ASME SA193, SA194 GR, IS, BS |
| Standard | DIN, ISO, JIS, GB, IS, BS, ASTM |
| Length | 3mm to 200mm |
| Size | M02 to M160, Custom Sizes |
Alloy Steel AISI 4130 Mechanical Properties
AISI 4130 offers a strong blend of toughness, ductility and hardness, making it suitable for high-pressure and high-temperature environments. Its balanced mechanical profile supports reliable performance in aerospace, automotive, petrochemical and oil & gas applications.
| Property | Metric | Imperial |
|---|---|---|
| Ultimate Tensile Strength | ~560 MPa | ~81,200 psi |
| Yield Strength | ~460 MPa | ~66,700 psi |
| Modulus of Elasticity | 190–210 GPa | 27,557–30,458 ksi |
| Bulk Modulus | ~140 GPa | ~20,300 ksi |
| Shear Modulus | ~80 GPa | ~11,600 ksi |
| Poisson’s Ratio | 0.27–0.30 | 0.27–0.30 |
| Elongation at Break (50 mm) | ~21.5% | ~21.5% |
| Reduction of Area | ~59.6% | ~59.6% |
| Hardness (Brinell) | ~217 HB | ~217 HB |
| Hardness (Knoop) | ~240 HK | ~240 HK |
| Hardness (Rockwell B) | ~95 HRB | ~95 HRB |
| Hardness (Rockwell C)* | ~17 HRC | ~17 HRC |
| Hardness (Vickers) | ~228 HV | ~228 HV |
| Machinability (Annealed, based on AISI 1212 = 100%) | ~70% | ~70% |
Alloy Steel AISI 4130 Fasteners – Electrical & Thermal Properties
AISI 4130 fasteners offer stable electrical resistivity and reliable heat-transfer performance at various operating temperatures. Their consistent thermal conductivity and specific heat capacity make them suitable for high-temperature, high-stress industrial environments.
Electrical Properties
| Property | Metric Value | Imperial Value |
|---|---|---|
| Electrical Resistivity @ 20°C | 0.0000271 ohm-cm | 0.0000271 ohm-cm |
| Electrical Resistivity @ 100°C | 0.0000342 ohm-cm | 0.0000342 ohm-cm |
| Electrical Resistivity @ 200°C | 0.0000529 ohm-cm | 0.0000529 ohm-cm |
| Electrical Resistivity @ 400°C | 0.0000786 ohm-cm | 0.0000786 ohm-cm |
| Electrical Resistivity @ 600°C | 0.0001103 ohm-cm | 0.0001103 ohm-cm |
| Electrical Resistivity @ 700°C | 0.0001171 ohm-cm | 0.0001171 ohm-cm |
| Electrical Resistivity @ 800°C | 0.0001222 ohm-cm | 0.0001222 ohm-cm |
Thermal Properties
| Property | Metric Value | Imperial Value |
|---|---|---|
| Temperature Range | ||
| Specific Heat Capacity | 0.477 J/g-°C | 0.114 BTU/lb-°F |
| ≥ 100°C / ≥ 212°F | ||
| Specific Heat Capacity | 0.523 J/g-°C | 0.125 BTU/lb-°F |
| 150–200°C / 302–392°F | ||
| Specific Heat Capacity | 0.837 J/g-°C | 0.200 BTU/lb-°F |
| 750–800°C / 1380–1470°F | ||
| Thermal Conductivity | 42.7 W/m-K | 296 BTU-in/hr-ft²-°F |
| @ 100°C / 212°F | ||
| Thermal Conductivity | 40.7 W/m-K | 282 BTU-in/hr-ft²-°F |
| @ 300°C / 572°F | ||
| Thermal Conductivity | 30.1 W/m-K | 209 BTU-in/hr-ft²-°F |
| @ 1200°C / 2190°F | ||
AISI 4130 Material Properties
AISI 4130 delivers strong mechanical performance with tensile strength of 4130 steel reaching up to ~670 MPa and compressive yield strength of AISI 4130 around ~460 MPa. Its good hardness, ductility and impact toughness make it suitable for high-stress industrial applications.
| Material Properties | Value |
|---|---|
| Tensile Strength | ~560 – 670 MPa |
| Yield Strength | ~460 MPa |
| Elongation | ~21.5% |
| Hardness (Brinell) | 197 – 217 HB |
| Density | 7.85 g/cm³ |
| Modulus of Elasticity | 205 GPa |
| Impact Toughness (Charpy) | Good |
These properties make AISI 4130 a great fit for fasteners that deal with stress vibration or repeated loads. It’s strong and reliable but also flexible enough to work in different setups. That balance of performance and versatility is why it’s often chosen for both structural work and jobs that involve handling pressure without breaking the budget.
Key AISI 4130 Steel Properties
What really makes AISI 4130 steel stand out is how it keeps its strength and performance even when the conditions get tough. Whether it’s going into high altitude aerospace parts or heavy duty fasteners this alloy holds up when it matters most.
Some of the key reasons people choose AISI 4130 steel include
- It’s easy to weld and machine
- It stays strong even in cold temperatures
- It gives decent resistance to corrosion
- Works well for surface hardening like carburizing and nitriding
- Handles fatigue and is abrasion resistant.
Because of all this AISI 4130 is a favorite among manufacturers and suppliers who want something durable without breaking the bank.
What is AISI 4130 Fasteners used for?
AISI 4130 fasteners are trusted in places where things just can’t go wrong. When strength, durability and safety really matter these fasteners show up and do the job. They’ve got the kind of mechanical properties and corrosion resistance that make them dependable in tough conditions — whether it’s heat pressure or constant vibration they can handle it.
You’ll see them used in all sorts of industries like:
- Civil Construction Industries
- Ship Building Industries
- Heavy Engineering Industries
- Fertilizer Plants
- Power Generation Units (Nuclear, Hydro & Thermal)
- Petro-Chemical Industries
- Civil Infrastructure Projects
- Oil Expansion Projects
- Offshore & Onshore Oil Towers
- Home Fittings
- Valves, Vessels & Pumps
- Railways
- Steel Plants
Whether it’s locking down a pipeline or keeping high speed machines running steady, AISI 4130 fasteners give the kind of reliability engineers count on and industries depend on every day.
AISI 4130 Fasteners Price in India
Looking for AISI 4130 Fasteners that meet the highest industry standards? We offer a comprehensive range of fasteners compliant with IS, BS, and DIN standards at competitive AISI 4130 price in India. Whether you're in aerospace, oil & gas or heavy engineering, our fasteners deliver the performance and reliability you need. For the latest pricing or to discuss your specific requirements, simply fill out the form below. Our team will get back to you promptly with all the information you need!
Looking for AISI 4130 fasteners that actually meet the mark? You’re in the right place. We offer a full range that follows IS BS and DIN standards and we keep our AISI 4130 prices in India fair and competitive. Whether you’re working on something in aerospace oil and gas or heavy engineering our fasteners are built to last and made to perform. If you need a quote or just want to talk through what fits your project best fill out the form below and someone from our team will get back to you soon.
Request QuoteFAQ’s About AISI 4130 Fasteners
What are AISI 4130 fasteners made of?
AISI 4130 fasteners are crafted from a chromium-molybdenum low-alloy steel that offers a robust mix of strength, toughness and weldability in demanding applications.
What is AISI 4130 material?
AISI 4130 is a chromium-molybdenum low-alloy steel known for its high strength, toughness and excellent weldability. It offers good resistance to fatigue, wear and corrosion, making it suitable for high-pressure and high-temperature environments. The balanced chemical composition of AISI 4130 gives it strong mechanical performance without becoming brittle.
What is 4130 used for?
AISI 4130 is widely used in aerospace, oil & gas, automotive, petrochemical and power generation industries. Common applications include fasteners, pressure vessels, valves, gears, hydraulic parts, structural tubing, aircraft components and high-strength fittings. Its durability, machinability and weldability make it ideal for critical, load-bearing and high-stress equipment.