Stainless Steel 310 Stud Bolts

Q: What is the price of Stainless Steel 310 Stud Bolts?

Prices typically range from ₹200 to ₹400 per kg in India, depending on diameter, length, and whether certification is included. Internationally, expect USD 1.00 to USD 8.00 per piece for standard sizes. Bulk pricing is lower. Always request a formal quotation with MTC included.

Q: What standards do Stainless Steel 310 Stud Bolts follow?

The primary standard for pressure applications is for the stud bolt ASTM A193 Grade B8T, and for the nut ASTM A194 Grade 8T. If the application is general engineering, then ISO or DIN standards can be used. Always ask your engineering team what the applicable standard is before you buy.

Q: What sizes are available for Stainless Steel 310 Stud Bolts?

Standard sizes range from M6 (1/4 inch) to M100 (4 inch) in diameter, with lengths from 25 mm up to 3000 mm. Custom sizes and non-standard thread forms are available from most specialist fastener suppliers with a lead time of 2–4 weeks.

Q: What materials are used in Stainless Steel 310 Stud Bolts?

SS 310 and SS 310S are austenitic stainless steel alloys. The principal alloying elements are chromium (24-26%) and nickel (19-22%). No coating or plating is typically applied; the alloy itself provides the corrosion and heat resistance.

Q: What industries use Stainless Steel 310 Stud Bolts?

These are most commonly used in petrochemical processing, power generation, cement and lime kilns, steel mill furnaces, chemical plants, and any industrial setting where operating temperatures regularly exceed 600°C. They are also used in less severe, but highly corrosive environments, where the higher alloy content of SS 310 provides extra protection.

Stainless Steel 310 stud bolts are threaded fasteners made from a high-alloy austenitic stainless steel grade that contains elevated levels of chromium and nickel. They are widely used in high-temperature and corrosive environments where standard fasteners fail quickly. If you are sourcing fasteners for furnace components, chemical processing plants, or heat exchangers, SS 310 stud bolts are worth considering.

Price of Stainless Steel 310 Stud Bolts

The approximate price of Stainless Steel 310 Stud Bolts per kg/unit is listed below, along with the factors affecting its final cost.

Approx Price Range

In India, the Stainless Steel 310 stud bolts are commonly priced in the range of ₹200 to ₹400 per kg, varying based on their size and finish. For international buying, this would usually be between USD 1.00 and USD 8.00 per piece. In general, bulk orders significantly reduce the cost per unit.

Price Per Unit / Kg

Form	Approx Price (India)
Per Piece (M6–M12)	₹80 – ₹200
Per Piece (M16–M24)	₹200 – ₹600
Per Kg	₹900 – ₹1,400

Prices vary by supplier, certification requirements, and order volume. Always request a formal quotation with material test reports included.

Factors Affecting Price

The price of SS 310 stud bolts depends on raw material composition, bolt size, and thread standard, certification and testing needs, surface finish, order quantity, and fluctuating nickel and chromium market prices.

Types of Stainless Steel 310 Stud Bolts

There are 5 types of Stainless Steel 310 Stud Bolts available; they are listed below.

Stainless Steel 310 Fully Threaded Stud Bolts

Stainless Steel 310 Double End Stud Bolts

Stainless Steel 310 Tap End Stud Bolts

Stainless Steel 310 Continuous Thread Studs (All-Thread Rods)

Stainless Steel 310 Eye Bolt Studs

Specifications of Stainless Steel 310 Stud Bolts

The specifications of Stainless Steel 310 Stud Bolts, including size, length, and form, are listed in the table given below.

Specification	ASTM A 193/ASME SA 193
Standard	all International Standards and ASTM, DIN, BS
Size	M02 - M33 \| 3/6" to 2" \| Custom Sizes
Length	3 mm to 200 mm \| Custom Sizes
Dimensions Standard	DIN: DIN 940, 949, 934,525,835,938,939,975,976, 2509 ISO: ISO 1862, 13178 ASME B18.31.2, B16.5
Form	Hex, Threading, Square, Round as per Gauge Etc.

Chemical Properties of Stainless Steel 310 Stud Bolts

The chemical properties of Stainless Steel 310 Stud Bolts, along with their proportion is listed in the table given below.

Element	SS 310 Composition (%)
Carbon (C)	0.03 max
Manganese (Mn)	2.00 max
Silicon (Si)	1.00 max
Chromium (Cr)	18.00 – 20.00
Nickel (Ni)	11.00 – 15.00
Phosphorus (P)	0.045 max
Sulphur (S)	0.030 max
Iron (Fe)	Balance

Mechanical Properties of Stainless Steel 310 Stud Bolts

The mechanical properties of Stainless Steel 310 Stud Bolts, including elongation and other factors, are listed below.

Property	Value
Tensile Strength	595 MPa (min)
Yield Strength (0.2% offset)	260 MPa (min)
Elongation	55% (min)
Hardness (Rockwell B)	85 HRB max

Physical Properties of Stainless Steel 310 Stud Bolts

The physical properties of Stainless Steel 310 Stud Bolts are listed below, including density, melting point, and other factors.

Property	Value
Density	7.75 g/cm³
Melting Point	1400 – 1450°C
Thermal Conductivity	14.2 W/m·K
Specific Heat Capacity	500 J/kg·K
Electrical Resistivity	0.78 µΩ·m
Coefficient of Thermal Expansion	15.9 µm/m·°C (20–100°C)

Dimension Chart of Stainless Steel 310 Stud Bolts

The dimensions of Stainless Steel 310 Stud Bolts are listed in the table given below.

Nominal Size (inch)	Diameter D Nominal	Min.	Max.	Tap End Full Thread Length (BM)	Umax = 2P	Bmin UNC & NC-5	Bmin UNF Thread	Bmin 8UN Thread / L ≤ 10	10 < 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

Size Chart of Stainless Steel 310 Stud Bolts

The available size chart for Stainless Steel 310 Stud Bolts is listed in the table given below, along with length and inch size.

Inch Size	Metric Equivalent	Standard Length Range
1/4"	M6	25 mm – 150 mm
3/8"	M10	25 mm – 200 mm
1/2"	M12	30 mm – 300 mm
5/8"	M16	40 mm – 400 mm
3/4"	M20	50 mm – 500 mm
7/8"	M22	60 mm – 600 mm
1"	M25	75 mm – 750 mm
1-1/4"	M32	100 mm – 1000 mm

Torque Charts of Stainless Steel 310 Stud Bolts

The torque charts of Stainless Steel 310 Stud Bolts are listed in the table given below.

Diameter	Torque (Nm) – Coarse Thread	Torque (Nm) – Fine Thread
M8	18 – 22	20 – 24
M10	35 – 42	38 – 46
M12	60 – 72	65 – 78
M16	145 – 175	155 – 185
M20	285 – 340	305 – 365
M24	490 – 590	525 – 630
M30	975 – 1170	1040 – 1250

Key Features of Stainless Steel 310 Stud Bolts

The 7 important features of Stainless Steel 310 Stud Bolts are listed below in detail.

Performs well in continuous service up to 1050°C
Resistant to oxidation, sulphidation, and carburisation at high temperatures
Good mechanical strength across a wide temperature range
Non-magnetic in the annealed condition
Does not require heat treatment after installation
Compatible with a broad range of flange standards (ASME, DIN, BS)
Available with full material traceability and third-party certification

Applications of Stainless Steel 310 Stud Bolts

SS 310 stud bolts are used in settings where temperatures exceed what standard 304 or 316 fasteners can handle.

Petrochemical plants
Furnace construction
Power generation
Cement and lime kilns
Chemical processing
Steel mills
Food processing
Aerospace ground support

How to Choose the Right Stainless Steel 310 Stud Bolts Supplier?

To choose the right Stainless Steel 310 Stud Bolts, follow the steps given below.

Supplier Selection Criteria

Choose a vendor who has SS 310 in stock and not on order only. The time of delivery is important, especially for maintenance shutdowns. A hardware distributor of general hardware is not as good as a supplier who can prove they have experience with fasteners for high-temperature applications.

Check whether the supplier offers complete sets. Stud bolts with matched SS 310 or SS 310S hex nuts and washers. Mixing grades in a bolted flange joint is a common mistake.

Technical Considerations

Confirm the manufacturing standard before placing any order. For pressure applications, the correct standard is ASTM A193 Grade B8T for the stud and ASTM A194 Grade 8T for the nut. Some suppliers offer SS 310 fasteners to general engineering standards, which may not meet the mechanical requirements for pressure vessel or boiler applications.

Thread form matters too. Confirm whether your application needs Metric (ISO), UNC, or BSW threads. Getting this wrong means the bolts cannot be used on-site.

Quality & Certification Check

A reliable supplier should be able to provide:

Mill Test Certificate (MTC) as per EN 10204 3.1 or 3.2
Chemical composition report for each heat
Dimensional inspection report
Third-party testing if required (SGS, Bureau Veritas, TÜV)
Heat number traceability on each piece or batch

Avoid suppliers who cannot provide heat-wise MTCs. For critical applications, request hardness test reports in addition to tensile data.

Procurement Tips for Bulk Orders

Order a small sample lot first and verify dimensions and certificates before placing large orders
Specify surface finish (plain, passivated, or electropolished) in your purchase order
Confirm lead time for non-standard lengths or thread forms in writing.
If your project is staged, ask if the supplier can do partial deliveries.
Request packaging information. Sets of stud bolts for flanges are often packaged by flange, which saves time sorting them on site.