Get A Quote

bottomNavHome

Home

navProfile

Account

bottomNavGetAQuote

Get A Quote

About Us

  • Products

    drawerRightArrow
  • Materials

    drawerRightArrow

Contact Us

Connect with us

blackFacebook blackTwitter blackLinkedIn blackInstagram
Stainless Steel 316 Stud Bolts

Stainless Steel 316 Stud Bolts

Stainless Steel 316 Stud Bolts are threaded fasteners used in industrial piping systems to connect flanges, valves, and pipe fittings. They are made from SS 316, which is an austenitic stainless steel grade containing molybdenum. That molybdenum content is what separates 316 from 304. It gives the material noticeably better resistance to chlorides, acids, and corrosive environments.

These bolts are used across oil and gas, chemical processing, marine, and pharmaceutical industries. They come in fully threaded or double-end stud configurations, and are almost always paired with heavy hex nuts.

Price of Stainless Steel 316 Stud Bolts

The approximate price range for Stainless Steel 316 Stud Bolts per kg/unit is listed below, along with the factors affecting the cost.

Approx Price Range

The Indian market offers Stainless Steel 316 stud bolts at a price range of ₹320 to ₹450 per kg based on size and finish. Prices can rise for imported or certified stock (PED, NACE). When you buy in bulk, the cost per unit is generally much smaller.

Price Per Unit / Kg

The per unit pricing of SS 316 Stud Bolts is approximately ₹80 – ₹180. Final price depends on supplier, origin (domestic versus imported), and quantity ordered. These are indicative figures; always ask for a live quote.

Factors Affecting Price

SS 316 stud bolt prices depend on size, certifications, finish, origin, and order volume, with costs influenced by nickel and molybdenum markets and discounts on larger bulk quantities.

Types of Stainless Steel 316 Stud Bolts

There are 5 types of 316 Stainless Steel Stud Bolts available, listed below.

  • Fully Threaded Stud Bolts
  • Double End Stud Bolts
  • Tap End Stud Bolts
  • Continuous Thread Studs
  • B8M Stud Bolts
  • Specifications of Stainless Steel 316 Stud Bolts

Specifications of Stainless Steel 316 Stud Bolts

The specifications of Stainless Steel 316 Stud Bolts, including size, dimensions, and form, are listed in the table given below. 

Specifications

ASTM A 193 / ASME SA 193

Standard

DIN, ISO, JIS, GB, IS, BS, ASTM, and all International Standards

Size

M3 - M100 | 3/6″ - 4″ | Custom Sizes

Stud Bolt Length

3 mm - 200 mm | Custom Sizes

Dimensions

DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3

Threads available

UNF, BSW, BSF, METRIC, UNC, or as required

Threads Configuration

ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads

Form

Hex, Threading, Square, Round, as per Gauge Etc.

Chemical Properties of Stainless Steel 316 Stud Bolts

The chemical properties of Stainless Steel 316 Stud Bolts, along with their proportion in percentage is listed in the table given below.

Element

Composition (%)

Carbon (C)

Max 0.08

Manganese (Mn)

Max 2.00

Silicon (Si)

Max 1.00

Phosphorus (P)

Max 0.045

Sulphur (S)

Max 0.030

Chromium (Cr)

16.00 – 18.00

Nickel (Ni)

11.00 – 14.00

Molybdenum (Mo)

2.00 – 3.00


Mechanical Properties of Stainless Steel 316 Stud Bolts

The mechanical properties of Stainless Steel 316 Stud Bolts, including elongation and other factors, are listed below.

Property

Value

Tensile Strength (min)

515 MPa (75,000 psi)

Yield Strength (min)

205 MPa (30,000 psi)

Elongation

Min 35%

Physical Properties of Stainless Steel 316 Stud Bolts

The physical properties of Stainless Steel 316 Stud Bolts are listed in the table given below. 

Property

Value

Density

8.0 g/cm³

Melting Point

1375 – 1400°C

Thermal Conductivity

16.3 W/m·K at 100°C

Electrical Resistivity

74 µΩ·cm

Magnetic Permeability

Non-magnetic (annealed)

Thermal Expansion

15.9 µm/m·°C (0–100°C)

Dimension Chart of Stainless Steel 316 Stud Bolts

The dimension chart of Stainless Steel 316 Stud Bolts, including diameter and nominal size, is listed below. 

Nominal Size (inch)

Diameter D Nominal

Min.

Max.

Tap End Full Thread Length BM (UNC & NC-5)

UNF Thread

8UN Thread

Bmin (L ≤ 10)

Bmin (10 < L ≤ 16)

Bmin (L > 16)

1/4

0.375

0.350

0.400

0.100

0.071

--

0.750

1.000

1.500

5/16

0.469

0.440

0.498

0.111

0.083

--

0.875

1.125

1.625

3/8

0.563

0.532

0.594

0.125

0.083

--

1.000

1.250

1.750

7/16

0.656

0.620

0.692

0.143

0.100

--

1.125

1.375

1.875

1/2

0.750

0.708

0.792

0.154

0.100

--

1.250

1.500

2.000

9/16

0.844

0.802

0.896

0.167

0.111

--

1.375

1.625

2.125

5/8

0.938

0.892

0.983

0.182

0.111

--

1.500

1.750

2.250

3/4

1.125

1.075

1.175

0.200

0.125

--

1.750

2.000

2.500

7/8

1.313

1.258

1.368

0.222

0.143

--

2.000

2.250

2.750

1

1.500

1.438

1.562

0.250

0.167

--

2.250

2.500

3.000

1 1/8

1.688

1.625

1.750

0.286

0.167

0.250

2.500

2.750

3.250

1 1/4

1.875

1.813

1.938

0.286

0.167

0.250

2.750

3.000

3.500

1 3/8

2.063

2.000

2.125

0.333

0.167

0.250

3.000

3.250

3.750

1 1/2

2.250

2.188

2.313

0.333

0.167

0.250

3.250

3.500

4.000

1 5/8

2.438

2.375

2.500

--

--

0.250

3.500

3.750

4.250

1 3/4

2.625

2.563

2.688

0.400

--

0.250

3.750

4.000

4.500

1 7/8

2.813

2.750

2.875

--

--

0.250

4.000

4.250

4.750

2

3.000

2.925

3.075

0.444

--

0.250

4.250

4.500

5.000

2 1/4

3.375

3.300

3.450

0.444

--

0.250

4.750

5.000

5.500

2 1/2

3.750

3.675

3.825

0.500

--

0.250

5.250

5.500

6.000

2 3/4

4.125

4.050

4.200

0.500

--

0.250

5.750

6.000

6.500

3

4.500

4.425

4.575

0.500

--

0.250

--

6.500

7.000

3 1/4

4.875

4.775

4.975

0.500

--

0.250

--

7.000

7.500

3 1/2

5.250

5.150

5.350

0.500

--

0.250

--

7.500

8.000

3 3/4

5.625

5.525

5.725

0.500

--

0.250

--

8.000

8.500

4

6.000

5.900

6.100

0.500

--

0.250

--

8.500

9.000

Custom lengths and diameters are available on request from most manufacturers.

Size Chart of Stainless Steel 316 Stud Bolts

The size chart for Stainless Steel 316 Stud Bolts is listed in the table given below, along with diameter and length. 

Flange Size (inches)

Bolt Circle Dia (mm)

No. of Bolts

Bolt Diameter

Bolt Length (approx)

1/2"

60.3

4

1/2"

60 mm

1"

79.4

4

1/2"

70 mm

2"

120.6

8

5/8"

90 mm

4"

190.5

8

3/4"

110 mm

6"

241.3

12

3/4"

130 mm

8"

298.4

12

7/8"

150 mm

10"

362.0

16

1"

170 mm

12"

431.8

16

1"

190 mm

Torque Charts of Stainless Steel 316 Stud Bolts

The torque charts for Stainless Steel 316 Stud Bolts are listed in the table given below, along with the diameter. 

Bolt Diameter

Torque (Nm) — Class 1

Torque (Nm) — Class 2

M8

18 – 22

22 – 28

M10

35 – 45

45 – 58

M12

60 – 75

75 – 95

M16

140 – 175

175 – 220

M20

275 – 340

340 – 420

M24

475 – 590

590 – 730

M30

950 – 1180

1180 – 1460

Key Features of Stainless Steel 316 Stud Bolts

The 7 important features of Stainless Steel 316 Stud Bolts are listed below in detail.

  • Good corrosion resistance
  • Suitable for service temperatures
  • Non-magnetic under normal conditions
  • Compatible with a wide range of gasket materials
  • Available in dual-certified 316/316L for applications requiring low carbon content
  • Meets ASTM A193 B8M
  • Threads are dimensionally compatible

Applications of Stainless Steel 316 Stud Bolts

Stainless Steel 316 Stud Bolts are used in the below mentioned industrial applications that require high-performance and strength. 

Oil and Gas

Chemical Processing

Pharmaceutical and Food Processing

Marine Industry

Power Generation

Pulp & Paper

Water Treatment

How to Choose the Right Stainless Steel 316 Stud Bolts Supplier?

To choose the right Stainless Steel 316 Stud Bolts, follow the steps below.

Supplier Selection Criteria

Look for suppliers that stock ASTM A193 B8M material and will provide mill test certificates (MTC) on request. If MTCs are not available from a supplier, then they are not fit for purpose for critical applications. Also, see if they have fast-moving sizes available; we can not take 8 to 12 week lead times on standard items.

The Piping Mart connects buyers with verified suppliers who maintain ready stock and can provide full documentation.

Technical Considerations

Confirm the thread form (UNC vs metric), length tolerance, and end configuration (fully threaded vs double-end) before placing an order. For flanged connections, cross-check bolt length against the flange class and gasket thickness. Getting this wrong on a bulk order is a costly mistake.

Also, clarify whether you need Class 1 (annealed) or Class 2 (strain-hardened); the mechanical properties differ, and some applications specifically call out one or the other.

Quality & Certification Check

At minimum, ask for:

  • Mill Test Certificate (EN 10204 3.1 or 3.2)
  • ASTM A193 B8M compliance declaration
  • Hardness test report (especially for sour service application as per NACE MR0175)
  • Custom lengths: Dimensional Inspection Report when ordering

If you are using it for offshore or pressure vessel applications, you may need third-party inspection (TPI) from agencies such as Bureau Veritas, Lloyd’s or SGS.

Procurement Tips for Bulk Orders

  • Order 5-10% more on quantity to allow for wastage on site, damage from threading or incorrect lengths.
  • Specify packaging needs if bolts are going to a coastal or humid location (anti-corrosion wrapping, wooden boxes).
  • For bigger orders of 1,000 pieces and up, get a sample batch checked out before clearing the whole shipment.
  • Always lock in the price at the time of PO. SS 316 prices fluctuate with nickel market movements.

Stainless Steel 316 Stud Bolts are threaded fasteners used in industrial piping systems to connect flanges, valves, and pipe fittings. They are made from SS 316, which is an austenitic stainless steel grade containing molybdenum. That molybdenum content is what separates 316 from 304. It gives the material noticeably better resistance to chlorides, acids, and corrosive environments.

These bolts are used across oil and gas, chemical processing, marine, and pharmaceutical industries. They come in fully threaded or double-end stud configurations, and are almost always paired with heavy hex nuts.

Price of Stainless Steel 316 Stud Bolts

The approximate price range for Stainless Steel 316 Stud Bolts per kg/unit is listed below, along with the factors affecting the cost.

Approx Price Range

The Indian market offers Stainless Steel 316 stud bolts at a price range of ₹320 to ₹450 per kg based on size and finish. Prices can rise for imported or certified stock (PED, NACE). When you buy in bulk, the cost per unit is generally much smaller.

Price Per Unit / Kg

The per unit pricing of SS 316 Stud Bolts is approximately ₹80 – ₹180. Final price depends on supplier, origin (domestic versus imported), and quantity ordered. These are indicative figures; always ask for a live quote.

Factors Affecting Price

SS 316 stud bolt prices depend on size, certifications, finish, origin, and order volume, with costs influenced by nickel and molybdenum markets and discounts on larger bulk quantities.

Types of Stainless Steel 316 Stud Bolts

There are 5 types of 316 Stainless Steel Stud Bolts available, listed below.

  • Fully Threaded Stud Bolts
  • Double End Stud Bolts
  • Tap End Stud Bolts
  • Continuous Thread Studs
  • B8M Stud Bolts
  • Specifications of Stainless Steel 316 Stud Bolts

Specifications of Stainless Steel 316 Stud Bolts

The specifications of Stainless Steel 316 Stud Bolts, including size, dimensions, and form, are listed in the table given below. 

Specifications

ASTM A 193 / ASME SA 193

Standard

DIN, ISO, JIS, GB, IS, BS, ASTM, and all International Standards

Size

M3 - M100 | 3/6″ - 4″ | Custom Sizes

Stud Bolt Length

3 mm - 200 mm | Custom Sizes

Dimensions

DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3

Threads available

UNF, BSW, BSF, METRIC, UNC, or as required

Threads Configuration

ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads

Form

Hex, Threading, Square, Round, as per Gauge Etc.

Chemical Properties of Stainless Steel 316 Stud Bolts

The chemical properties of Stainless Steel 316 Stud Bolts, along with their proportion in percentage is listed in the table given below.

Element

Composition (%)

Carbon (C)

Max 0.08

Manganese (Mn)

Max 2.00

Silicon (Si)

Max 1.00

Phosphorus (P)

Max 0.045

Sulphur (S)

Max 0.030

Chromium (Cr)

16.00 – 18.00

Nickel (Ni)

11.00 – 14.00

Molybdenum (Mo)

2.00 – 3.00


Mechanical Properties of Stainless Steel 316 Stud Bolts

The mechanical properties of Stainless Steel 316 Stud Bolts, including elongation and other factors, are listed below.

Property

Value

Tensile Strength (min)

515 MPa (75,000 psi)

Yield Strength (min)

205 MPa (30,000 psi)

Elongation

Min 35%

Physical Properties of Stainless Steel 316 Stud Bolts

The physical properties of Stainless Steel 316 Stud Bolts are listed in the table given below. 

Property

Value

Density

8.0 g/cm³

Melting Point

1375 – 1400°C

Thermal Conductivity

16.3 W/m·K at 100°C

Electrical Resistivity

74 µΩ·cm

Magnetic Permeability

Non-magnetic (annealed)

Thermal Expansion

15.9 µm/m·°C (0–100°C)

Dimension Chart of Stainless Steel 316 Stud Bolts

The dimension chart of Stainless Steel 316 Stud Bolts, including diameter and nominal size, is listed below. 

Nominal Size (inch)

Diameter D Nominal

Min.

Max.

Tap End Full Thread Length BM (UNC & NC-5)

UNF Thread

8UN Thread

Bmin (L ≤ 10)

Bmin (10 < L ≤ 16)

Bmin (L > 16)

1/4

0.375

0.350

0.400

0.100

0.071

--

0.750

1.000

1.500

5/16

0.469

0.440

0.498

0.111

0.083

--

0.875

1.125

1.625

3/8

0.563

0.532

0.594

0.125

0.083

--

1.000

1.250

1.750

7/16

0.656

0.620

0.692

0.143

0.100

--

1.125

1.375

1.875

1/2

0.750

0.708

0.792

0.154

0.100

--

1.250

1.500

2.000

9/16

0.844

0.802

0.896

0.167

0.111

--

1.375

1.625

2.125

5/8

0.938

0.892

0.983

0.182

0.111

--

1.500

1.750

2.250

3/4

1.125

1.075

1.175

0.200

0.125

--

1.750

2.000

2.500

7/8

1.313

1.258

1.368

0.222

0.143

--

2.000

2.250

2.750

1

1.500

1.438

1.562

0.250

0.167

--

2.250

2.500

3.000

1 1/8

1.688

1.625

1.750

0.286

0.167

0.250

2.500

2.750

3.250

1 1/4

1.875

1.813

1.938

0.286

0.167

0.250

2.750

3.000

3.500

1 3/8

2.063

2.000

2.125

0.333

0.167

0.250

3.000

3.250

3.750

1 1/2

2.250

2.188

2.313

0.333

0.167

0.250

3.250

3.500

4.000

1 5/8

2.438

2.375

2.500

--

--

0.250

3.500

3.750

4.250

1 3/4

2.625

2.563

2.688

0.400

--

0.250

3.750

4.000

4.500

1 7/8

2.813

2.750

2.875

--

--

0.250

4.000

4.250

4.750

2

3.000

2.925

3.075

0.444

--

0.250

4.250

4.500

5.000

2 1/4

3.375

3.300

3.450

0.444

--

0.250

4.750

5.000

5.500

2 1/2

3.750

3.675

3.825

0.500

--

0.250

5.250

5.500

6.000

2 3/4

4.125

4.050

4.200

0.500

--

0.250

5.750

6.000

6.500

3

4.500

4.425

4.575

0.500

--

0.250

--

6.500

7.000

3 1/4

4.875

4.775

4.975

0.500

--

0.250

--

7.000

7.500

3 1/2

5.250

5.150

5.350

0.500

--

0.250

--

7.500

8.000

3 3/4

5.625

5.525

5.725

0.500

--

0.250

--

8.000

8.500

4

6.000

5.900

6.100

0.500

--

0.250

--

8.500

9.000

Custom lengths and diameters are available on request from most manufacturers.

Size Chart of Stainless Steel 316 Stud Bolts

The size chart for Stainless Steel 316 Stud Bolts is listed in the table given below, along with diameter and length. 

Flange Size (inches)

Bolt Circle Dia (mm)

No. of Bolts

Bolt Diameter

Bolt Length (approx)

1/2"

60.3

4

1/2"

60 mm

1"

79.4

4

1/2"

70 mm

2"

120.6

8

5/8"

90 mm

4"

190.5

8

3/4"

110 mm

6"

241.3

12

3/4"

130 mm

8"

298.4

12

7/8"

150 mm

10"

362.0

16

1"

170 mm

12"

431.8

16

1"

190 mm

Torque Charts of Stainless Steel 316 Stud Bolts

The torque charts for Stainless Steel 316 Stud Bolts are listed in the table given below, along with the diameter. 

Bolt Diameter

Torque (Nm) — Class 1

Torque (Nm) — Class 2

M8

18 – 22

22 – 28

M10

35 – 45

45 – 58

M12

60 – 75

75 – 95

M16

140 – 175

175 – 220

M20

275 – 340

340 – 420

M24

475 – 590

590 – 730

M30

950 – 1180

1180 – 1460

Key Features of Stainless Steel 316 Stud Bolts

The 7 important features of Stainless Steel 316 Stud Bolts are listed below in detail.

  • Good corrosion resistance
  • Suitable for service temperatures
  • Non-magnetic under normal conditions
  • Compatible with a wide range of gasket materials
  • Available in dual-certified 316/316L for applications requiring low carbon content
  • Meets ASTM A193 B8M
  • Threads are dimensionally compatible

Applications of Stainless Steel 316 Stud Bolts

Stainless Steel 316 Stud Bolts are used in the below mentioned industrial applications that require high-performance and strength. 

Oil and Gas

Chemical Processing

Pharmaceutical and Food Processing

Marine Industry

Power Generation

Pulp & Paper

Water Treatment

How to Choose the Right Stainless Steel 316 Stud Bolts Supplier?

To choose the right Stainless Steel 316 Stud Bolts, follow the steps below.

Supplier Selection Criteria

Look for suppliers that stock ASTM A193 B8M material and will provide mill test certificates (MTC) on request. If MTCs are not available from a supplier, then they are not fit for purpose for critical applications. Also, see if they have fast-moving sizes available; we can not take 8 to 12 week lead times on standard items.

The Piping Mart connects buyers with verified suppliers who maintain ready stock and can provide full documentation.

Technical Considerations

Confirm the thread form (UNC vs metric), length tolerance, and end configuration (fully threaded vs double-end) before placing an order. For flanged connections, cross-check bolt length against the flange class and gasket thickness. Getting this wrong on a bulk order is a costly mistake.

Also, clarify whether you need Class 1 (annealed) or Class 2 (strain-hardened); the mechanical properties differ, and some applications specifically call out one or the other.

Quality & Certification Check

At minimum, ask for:

  • Mill Test Certificate (EN 10204 3.1 or 3.2)
  • ASTM A193 B8M compliance declaration
  • Hardness test report (especially for sour service application as per NACE MR0175)
  • Custom lengths: Dimensional Inspection Report when ordering

If you are using it for offshore or pressure vessel applications, you may need third-party inspection (TPI) from agencies such as Bureau Veritas, Lloyd’s or SGS.

Procurement Tips for Bulk Orders

  • Order 5-10% more on quantity to allow for wastage on site, damage from threading or incorrect lengths.
  • Specify packaging needs if bolts are going to a coastal or humid location (anti-corrosion wrapping, wooden boxes).
  • For bigger orders of 1,000 pieces and up, get a sample batch checked out before clearing the whole shipment.
  • Always lock in the price at the time of PO. SS 316 prices fluctuate with nickel market movements.

Stainless Steel 316 Stud Bolts Suppliers

Stainless Steel 316 Stud Bolts FAQ's  

Prices vary according to size, quantity, and supplier. The smaller sizes (M10 – M16) are priced between ₹320 and ₹450 per kg, whereas the larger diameters (M24 and above) can range from ₹350 to ₹600 or more in the Indian market. Bulk pricing per kg falls in the ₹450–₹750 range. Contact suppliers on Piping Mart for a current quote.

The stud bolts are of the primary standard ASTM A193 Grade B8M with ASTM A194 Grade 2HM nuts. Dimensional standards are ASME B18.2.1 (inch series) and DIN 976 (metric). The flange bolt patterns follow ASME B16.5 or EN 1092-1, depending on the project standard.

Standard sizes run from M6 (1/4") up to M100 (4") in diameter. Lengths start from around 25 mm and can go up to 3,000 mm for special applications. Most stock items fall in the M10–M36 range. Larger and non-standard sizes are available through custom manufacturing with a 4–8 week lead time.

The base material is Stainless Steel 316, an austenitic grade of steel with 16-18% Chromium, 10-14% Nickel, and 2-3% Molybdenum. Some suppliers also stock 316L (low carbon version) or dual-certified 316/316L, which fulfils the chemical and mechanical requirements of both grades. The nuts supplied with B8M studs are typically made from the same alloy group.

Oil and gas (onshore and offshore), chemical processing, pharmaceuticals, food and beverage, marine, power generation, water treatment, and pulp and paper. Basically, any industry where you have flanged piping working in a corrosive or wet environment. The molybdenum content makes 316 a practical choice in these situations over 304.