Stainless Steel 316L Stud Bolts
Stainless Steel 316L Stud Bolts are fully threaded fasteners used to join flanges, pressure vessels, and piping systems in environments where corrosion is a real concern. The "L" in 316L stands for low carbon. The carbon content is kept below 0.03%, which reduces the risk of carbide precipitation during welding. That makes these bolts a better fit than standard 316 in situations involving heat or welding.
These bolts are used widely in marine, chemical, pharmaceutical, and oil and gas applications. The molybdenum content (2–3%) gives 316L significantly better resistance to pitting and crevice corrosion compared to grades like 304 or 304L.
Price of Stainless Steel 316L Stud Bolts
The approximate price range of Stainless Steel 316L Stud Bolts per kg/unit is listed below, along with the factors affecting the final cost.
Approx Price Range
Prices vary depending on size, finish, and order quantity. As a rough guide:
- Small sizes (M6 to M16): ₹8 to ₹60 per piece
- Medium sizes (M20 to M36): ₹60 to ₹350 per piece
- Larger and heavy hex sizes: ₹350 and above
International pricing typically falls between USD 0.10 and USD 5.00 per piece for standard stud bolts, with speciality grades or coatings priced higher.
Price Per Unit / Kg
SS 316L stud bolts are offered at a bulk price from ₹400 to ₹750 per kg, depending on the diameter and threading type. Prices depend on the world prices of nickel and molybdenum, and supplier quotes are often valid for a limited time.
Factors Affecting Price
SS 316L stud bolt pricing depends on nickel and molybdenum costs, size, thread type, surface finish, certification needs, order quantity discounts, and lead time premiums for urgent or custom requirements.
Types of Stainless Steel 316L Stud Bolts
The 6 types of Stainless Steel 316L Stud Bolts are listed below.
- Stainless Steel 316L Fully Threaded Stud Bolt
- Stainless Steel 316L Double End Stud Bolt
- Stainless Steel 316L Tap End Stud Bolt
- Stainless Steel 316L Eye Bolt Stud
- Stainless Steel 316L Hex Head Stud Bolt
- Stainless Steel 316L U-Bolt
Specifications of Stainless Steel 316L Stud Bolts
The specifications of Stainless Steel 316L Stud Bolts, including size, surface finish, and length, are listed in the table below.
|
Parameter |
Specification |
|
Size Range (Imperial) |
1/2″ to 4″ |
|
Size Range (Metric) |
M3 to M60 |
|
Length |
6 mm to 500 mm |
|
Stud Types |
Double-End, Fully Threaded, Tap-End |
|
End Types |
Sheared, Chamfered, Flat, Rounded, Saw Cut |
|
Standards |
ASTM A193 / ASME SA193, ISO 4017, DIN 931, GB 5783 |
|
Manufacturing Process |
Hot Forging, Cold Forging, CNC Machining |
|
Surface Finish |
Passivation, Anodising, Sand Blasting, Polishing, Electroplating, Rust Preventive Oil |
Chemical Properties of Stainless Steel 316L Stud Bolts
The chemical properties of Stainless Steel 316L Stud Bolts are listed in the table given below, along with their proportion in percentage.
|
Element |
Composition (%) |
|
Carbon (C) |
Max 0.03 |
|
Manganese (Mn) |
Max 2.00 |
|
Silicon (Si) |
Max 0.75 |
|
Phosphorus (P) |
Max 0.045 |
|
Sulphur (S) |
Max 0.030 |
|
Chromium (Cr) |
16.00 – 18.00 |
|
Nickel (Ni) |
10.00 – 14.00 |
|
Molybdenum (Mo) |
2.00 – 3.00 |
|
Nitrogen (N) |
Max 0.10 |
Mechanical Properties of Stainless Steel 316L Stud Bolts
The mechanical properties of Stainless Steel 316L Stud Bolts are listed in the table below, including elongation and more.
|
Property |
Value |
|
Tensile Strength |
Min 485 MPa (70 ksi) |
|
Yield Strength (0.2% Offset) |
Min 170 MPa (25 ksi) |
|
Elongation |
Min 40% |
|
Hardness (Brinell) |
Max 217 HB |
|
Hardness (Rockwell B) |
Max 95 HRB |
Physical Properties of Stainless Steel 316L Stud Bolts
The physical properties of Stainless Steel 316L Stud Bolts are given in the table below, including density, melting point, and other properties.
|
Property |
Value |
|
Density |
7.98 g/cm³ |
|
Melting Point |
1375 – 1400°C |
|
Thermal Conductivity |
16.3 W/m·K at 100°C |
|
Electrical Resistivity |
74 µΩ·cm |
Dimension Chart of Stainless Steel 316L Stud Bolts
The dimension chart of Stainless Steel 316L Stud Bolts is listed in the table given below, along with sizes, diameter, and other factors.
|
Diameter |
Diameter in inches |
Diameter in mm |
Nut Sizes |
|
M12 |
0.4724 |
12 |
19 |
|
M18 |
0.7087 |
18 |
27 |
|
M16 |
0.6299 |
16 |
24 |
|
M20 |
0.7874 |
20 |
30 |
|
M10 |
0.3937 |
10 |
17 |
|
M14 |
0.5512 |
14 |
22 |
|
M24 |
0.9449 |
24 |
36 |
|
M48 |
1.8898 |
48 |
75 |
|
M33 |
1.2992 |
33 |
50 |
Size Chart of Stainless Steel 316L Stud Bolts
The size chart of Stainless Steel 316L Stud Bolts is listed in the table given below.
|
Dia |
- |
M3 |
M4 |
|
Nom |
4.50 |
5.50 | |
|
Max |
4.30 |
5.30 | |
|
Min |
4.70 |
5.70 | |
|
Nom |
0.60 |
0.65 | |
|
Max |
0.52 |
0.57 | |
|
Min |
0.68 |
0.73 | |
|
Nom |
0.55 |
0.55 | |
|
Max |
0.50 |
0.50 | |
|
Min |
0.60 |
0.60 |
Torque Charts of Stainless Steel 316L Stud Bolts
The torque chart of Stainless Steel 316L Stud Bolts, including bolt size, grade, and torque, is listed in the table given below.
|
Bolt Size |
Grade |
Torque (Nm) – Dry |
Torque (Nm) – Lubricated |
|
M8 |
B8M Cl.1 |
18 |
13 |
|
M10 |
B8M Cl.1 |
36 |
26 |
|
M12 |
B8M Cl.1 |
62 |
45 |
|
M16 |
B8M Cl.1 |
150 |
110 |
|
M20 |
B8M Cl.1 |
290 |
210 |
|
M24 |
B8M Cl.1 |
500 |
360 |
|
M30 |
B8M Cl.1 |
980 |
710 |
|
M36 |
B8M Cl.1 |
1700 |
1230 |
Key Features of Stainless Steel 316L Stud Bolts
The 8 important features of Stainless Steel 316L Stud Bolts are listed below in detail.
- Low carbon content
- Molybdenum addition
- Non-magnetic in the annealed condition
- Good low-temperature toughness
- Excellent formability and weldability
- Compatible with PTFE, graphite, and spiral wound gaskets
- Available with EN 10204 3.1 and 3.2 certification
- Resistant to intergranular corrosion
Applications of Stainless Steel 316L Stud Bolts
These bolts are used in industries that require high-resistance and excellent performance without failure.
- Oil and Gas
- Chemical Processing
- Marine and Offshore
- Pharmaceutical and Food Processing
- Power Generation
- Pulp and Paper Industry
- Desalination Plants
How to Choose the Right Stainless Steel 316L Stud Bolts Supplier?
To choose the right Stainless Steel 316L Stud Bolts, follow the steps given below.
Supplier Selection Criteria
Find suppliers that stock the stud bolts and the matching A194 Grade 8M nuts. Some suppliers will sell bolts but buy nuts from somewhere else. See if they have stock locally or if they are just importing everything (it can take a long time if you are importing everything from overseas).
Request references from comparable industries. An experienced oil and gas fastener supplier knows NACE requirements and material traceability that a generic hardware supplier does not.
Technical Considerations
Confirm the supplier can provide bolts to your exact thread standard, like UNC, UNF, or metric. Not all suppliers can offer both inch and metric sizes from local stock. If you need specific stud lengths, check whether they cut to length or manufacture from stock bar; cut lengths are generally faster to deliver.
Class 1 or Class 2 bolts affect tensile and yield strength. Class 1 is used for most standard piping applications. Class 2 may be specified for high-pressure flanges.
Quality & Certification Check
Require a minimum of a Mill Test Report (MTR) showing chemical composition & mechanical properties. Certification to EN 10204 3.2, which requires a third-party witness at the mill, may be required for projects that are third-party inspected or critical.
Also check for:
- Hardness test reports
- Dimensional inspection reports
- PMI (Positive Material Identification) test results if traceability is required
- NACE MR0175 / ISO 15156 compliance for sour service applications
Procurement Tips for Bulk Orders
- Always get a formal quote and lock in pricing before you issue a purchase order. Material prices can move fast
- Ask about staggered delivery for large volumes to avoid storage problems
- Inspect samples before paying the full amount for new suppliers
- Specify packaging requirements if bolts are going offshore or into export containers.
- Critical applications thread gauging is done lot-wise and not batch-wise
Stainless Steel 316L Stud Bolts are fully threaded fasteners used to join flanges, pressure vessels, and piping systems in environments where corrosion is a real concern. The "L" in 316L stands for low carbon. The carbon content is kept below 0.03%, which reduces the risk of carbide precipitation during welding. That makes these bolts a better fit than standard 316 in situations involving heat or welding.
These bolts are used widely in marine, chemical, pharmaceutical, and oil and gas applications. The molybdenum content (2–3%) gives 316L significantly better resistance to pitting and crevice corrosion compared to grades like 304 or 304L.
Price of Stainless Steel 316L Stud Bolts
The approximate price range of Stainless Steel 316L Stud Bolts per kg/unit is listed below, along with the factors affecting the final cost.
Approx Price Range
Prices vary depending on size, finish, and order quantity. As a rough guide:
- Small sizes (M6 to M16): ₹8 to ₹60 per piece
- Medium sizes (M20 to M36): ₹60 to ₹350 per piece
- Larger and heavy hex sizes: ₹350 and above
International pricing typically falls between USD 0.10 and USD 5.00 per piece for standard stud bolts, with speciality grades or coatings priced higher.
Price Per Unit / Kg
SS 316L stud bolts are offered at a bulk price from ₹400 to ₹750 per kg, depending on the diameter and threading type. Prices depend on the world prices of nickel and molybdenum, and supplier quotes are often valid for a limited time.
Factors Affecting Price
SS 316L stud bolt pricing depends on nickel and molybdenum costs, size, thread type, surface finish, certification needs, order quantity discounts, and lead time premiums for urgent or custom requirements.
Types of Stainless Steel 316L Stud Bolts
The 6 types of Stainless Steel 316L Stud Bolts are listed below.
- Stainless Steel 316L Fully Threaded Stud Bolt
- Stainless Steel 316L Double End Stud Bolt
- Stainless Steel 316L Tap End Stud Bolt
- Stainless Steel 316L Eye Bolt Stud
- Stainless Steel 316L Hex Head Stud Bolt
- Stainless Steel 316L U-Bolt
Specifications of Stainless Steel 316L Stud Bolts
The specifications of Stainless Steel 316L Stud Bolts, including size, surface finish, and length, are listed in the table below.
|
Parameter |
Specification |
|
Size Range (Imperial) |
1/2″ to 4″ |
|
Size Range (Metric) |
M3 to M60 |
|
Length |
6 mm to 500 mm |
|
Stud Types |
Double-End, Fully Threaded, Tap-End |
|
End Types |
Sheared, Chamfered, Flat, Rounded, Saw Cut |
|
Standards |
ASTM A193 / ASME SA193, ISO 4017, DIN 931, GB 5783 |
|
Manufacturing Process |
Hot Forging, Cold Forging, CNC Machining |
|
Surface Finish |
Passivation, Anodising, Sand Blasting, Polishing, Electroplating, Rust Preventive Oil |
Chemical Properties of Stainless Steel 316L Stud Bolts
The chemical properties of Stainless Steel 316L Stud Bolts are listed in the table given below, along with their proportion in percentage.
|
Element |
Composition (%) |
|
Carbon (C) |
Max 0.03 |
|
Manganese (Mn) |
Max 2.00 |
|
Silicon (Si) |
Max 0.75 |
|
Phosphorus (P) |
Max 0.045 |
|
Sulphur (S) |
Max 0.030 |
|
Chromium (Cr) |
16.00 – 18.00 |
|
Nickel (Ni) |
10.00 – 14.00 |
|
Molybdenum (Mo) |
2.00 – 3.00 |
|
Nitrogen (N) |
Max 0.10 |
Mechanical Properties of Stainless Steel 316L Stud Bolts
The mechanical properties of Stainless Steel 316L Stud Bolts are listed in the table below, including elongation and more.
|
Property |
Value |
|
Tensile Strength |
Min 485 MPa (70 ksi) |
|
Yield Strength (0.2% Offset) |
Min 170 MPa (25 ksi) |
|
Elongation |
Min 40% |
|
Hardness (Brinell) |
Max 217 HB |
|
Hardness (Rockwell B) |
Max 95 HRB |
Physical Properties of Stainless Steel 316L Stud Bolts
The physical properties of Stainless Steel 316L Stud Bolts are given in the table below, including density, melting point, and other properties.
|
Property |
Value |
|
Density |
7.98 g/cm³ |
|
Melting Point |
1375 – 1400°C |
|
Thermal Conductivity |
16.3 W/m·K at 100°C |
|
Electrical Resistivity |
74 µΩ·cm |
Dimension Chart of Stainless Steel 316L Stud Bolts
The dimension chart of Stainless Steel 316L Stud Bolts is listed in the table given below, along with sizes, diameter, and other factors.
|
Diameter |
Diameter in inches |
Diameter in mm |
Nut Sizes |
|
M12 |
0.4724 |
12 |
19 |
|
M18 |
0.7087 |
18 |
27 |
|
M16 |
0.6299 |
16 |
24 |
|
M20 |
0.7874 |
20 |
30 |
|
M10 |
0.3937 |
10 |
17 |
|
M14 |
0.5512 |
14 |
22 |
|
M24 |
0.9449 |
24 |
36 |
|
M48 |
1.8898 |
48 |
75 |
|
M33 |
1.2992 |
33 |
50 |
Size Chart of Stainless Steel 316L Stud Bolts
The size chart of Stainless Steel 316L Stud Bolts is listed in the table given below.
|
Dia |
- |
M3 |
M4 |
|
Nom |
4.50 |
5.50 | |
|
Max |
4.30 |
5.30 | |
|
Min |
4.70 |
5.70 | |
|
Nom |
0.60 |
0.65 | |
|
Max |
0.52 |
0.57 | |
|
Min |
0.68 |
0.73 | |
|
Nom |
0.55 |
0.55 | |
|
Max |
0.50 |
0.50 | |
|
Min |
0.60 |
0.60 |
Torque Charts of Stainless Steel 316L Stud Bolts
The torque chart of Stainless Steel 316L Stud Bolts, including bolt size, grade, and torque, is listed in the table given below.
|
Bolt Size |
Grade |
Torque (Nm) – Dry |
Torque (Nm) – Lubricated |
|
M8 |
B8M Cl.1 |
18 |
13 |
|
M10 |
B8M Cl.1 |
36 |
26 |
|
M12 |
B8M Cl.1 |
62 |
45 |
|
M16 |
B8M Cl.1 |
150 |
110 |
|
M20 |
B8M Cl.1 |
290 |
210 |
|
M24 |
B8M Cl.1 |
500 |
360 |
|
M30 |
B8M Cl.1 |
980 |
710 |
|
M36 |
B8M Cl.1 |
1700 |
1230 |
Key Features of Stainless Steel 316L Stud Bolts
The 8 important features of Stainless Steel 316L Stud Bolts are listed below in detail.
- Low carbon content
- Molybdenum addition
- Non-magnetic in the annealed condition
- Good low-temperature toughness
- Excellent formability and weldability
- Compatible with PTFE, graphite, and spiral wound gaskets
- Available with EN 10204 3.1 and 3.2 certification
- Resistant to intergranular corrosion
Applications of Stainless Steel 316L Stud Bolts
These bolts are used in industries that require high-resistance and excellent performance without failure.
- Oil and Gas
- Chemical Processing
- Marine and Offshore
- Pharmaceutical and Food Processing
- Power Generation
- Pulp and Paper Industry
- Desalination Plants
How to Choose the Right Stainless Steel 316L Stud Bolts Supplier?
To choose the right Stainless Steel 316L Stud Bolts, follow the steps given below.
Supplier Selection Criteria
Find suppliers that stock the stud bolts and the matching A194 Grade 8M nuts. Some suppliers will sell bolts but buy nuts from somewhere else. See if they have stock locally or if they are just importing everything (it can take a long time if you are importing everything from overseas).
Request references from comparable industries. An experienced oil and gas fastener supplier knows NACE requirements and material traceability that a generic hardware supplier does not.
Technical Considerations
Confirm the supplier can provide bolts to your exact thread standard, like UNC, UNF, or metric. Not all suppliers can offer both inch and metric sizes from local stock. If you need specific stud lengths, check whether they cut to length or manufacture from stock bar; cut lengths are generally faster to deliver.
Class 1 or Class 2 bolts affect tensile and yield strength. Class 1 is used for most standard piping applications. Class 2 may be specified for high-pressure flanges.
Quality & Certification Check
Require a minimum of a Mill Test Report (MTR) showing chemical composition & mechanical properties. Certification to EN 10204 3.2, which requires a third-party witness at the mill, may be required for projects that are third-party inspected or critical.
Also check for:
- Hardness test reports
- Dimensional inspection reports
- PMI (Positive Material Identification) test results if traceability is required
- NACE MR0175 / ISO 15156 compliance for sour service applications
Procurement Tips for Bulk Orders
- Always get a formal quote and lock in pricing before you issue a purchase order. Material prices can move fast
- Ask about staggered delivery for large volumes to avoid storage problems
- Inspect samples before paying the full amount for new suppliers
- Specify packaging requirements if bolts are going offshore or into export containers.
- Critical applications thread gauging is done lot-wise and not batch-wise
Stainless Steel 316L Stud Bolts Suppliers
Stainless Steel 316L Stud Bolts FAQ's
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