ASTM A320 B8M Stud Bolts
Manufacturer of A320 B8M Class 2 Stud Bolts in India, Available in Hot & Cold Forming Sizes
Table of Content
- What Do You Mean By ASTM A320 B8M ?
- Specifications of ASTM A320 B8M
- Types of ASTM A320 B8M Bolts
- ASTM A193 B8m Hex Bolts Dimensions Chart
- A320 Grade B8M Class 2 Hex Nuts Size Chart
- B8M Heavy Hex Bolts Torque Chart
- A320 B8M Bolt Physical Properties
- Chemical Composition of ASTM A320 B8m Class 2 Flange Bolts
- ASTM A320 B8M Hex Bolts Weight Chart
- Equivalent Grade of ASTM A320 Grade B8M Anchor Bolts
- Mechanical Properties of SA 320 Grade B8M Hex Bolts
- Delivery Time Table of ASTM A320 Grade B8m Bolts
- How Do Astm A320 B8M Fasteners Perform in High-pressure Environments?
- How Does the Manufacturing Process of ASTM A320 B8M Affect Its Quality?
- What is the Impact Toughness of ASTM A320 B8M?
ASTM A320 B8M is a standard specification for stainless steel fasteners, primarily bolts and studs, made from 304 stainless steel modified for enhanced stress-corrosion resistance. ASTM A320 B8M Stud Bolt Manufacturer in India, Designed for use in low-temperature environments, these fasteners are known for their corrosion resistance, strength, and ductility, making them ideal for demanding industrial applications.
As an experienced ASTM A320 B8M stud bolt manufacturer in India, we specialize in producing high-quality stud bolts made from austenitic stainless steel. These stud bolts are designed to provide exceptional resistance to corrosion, especially in harsh environments, making them ideal for use in industries like oil and gas, chemical processing, and marine applications.
Verify the Specifications for the B8M Heavy Hex Bolts & A320 B8M Class 2 Hex Nuts, Which Range in Size From M10 – M110.
ASTM A320 B8M Bolt Sizes
- Imperial Sizes: 1/4" - 8"
- Metric Size: M6 - M152
- Length: 3mm to 200 MM
Benefits
- Corrosion Resistance
- Low-Temperature Performance
- High Strength
- Excellent Weldability
Certification
- 100% Radiography Test Report
- Raw Materials Certificate
- MTC as per EN 10204 / 3.1B
- Compliance Certificates
Neck type
- Triangular
- Hex, Square
- Oval
- Knurled
Production process
- Cold Forging
- Hot Forging
- Machining and CNC
- Customized
Surface Coating
- Black Oxide
- Cadmium, Galvanized
- Teflon, Xylan, Zinc
- Others Upon Request
Threads Types
- BSW
- METRIC
- BSF, UNC
- UNF
Head Types
- Hex flange
- Round,Flat
- T-head & Triangular
- Hex, Square
Finishing
- Nickel plated, Anodizing, plated zinc-nickel
- Geometry, Dacroment, Hot Dip Galvanised (HDG),
- Zinc , black oxide, BZP
Applications
- Oil and Gas Industry
- Chemical and Petrochemical Plants
- Marine Industry
- Power Generation
Packaging Methods
- Corrugated Box
- Small Pack
- Pallet
- Carton
Testing Methods
- Hardness Testing
- Corrosion Testing
- Tensile Testing
- Impact Testing
Cutting Methods
- Threaded Rod Cutter
- Angle Grinder
- Hacksaw
Disadvantages
- Limited High-Temp Performance
- Susceptibility to Stress Corrosion
- Higher Cost
Documentation
- Guarantee Letter
- Fumigation Certificates
- Raw Material Test Reports
SA 320 B8M Square Head Bolts
SA 320 Gr B8M U-Bolts
ASTM A320 B8M Hex Head Bolt
A320 B8M J-Bolts
A320 Grade B8M Flange Bolts
ASTM A320 Grade B8M Eye Bolts
ASTM A320 B8M Heavy Hex Bolt
ASTM A320 Gr B8M Shoulder Bolts
Get ASTM A320 Grade B8M Stud Bolts Available in Correct Dimensions , Check Dimension Chart
| Heavy Hex Bolt Dia | D | F | C | H | |||||
|---|---|---|---|---|---|---|---|---|---|
| Body Dia | Width Across Flats | Width Across Corners | Height | ||||||
| Max | Basic | Min | Max | Min | Max | Max | Basic | Min | |
| 1/2 | 0.515 | 7/8 | 0.850 | 0.875 | 0.969 | 1.010 | 0.364 | 11/32 | 0.302 |
| 7/8 | 0.895 | 1-7/16 | 1.394 | 1.438 | 1.589 | 1.660 | 0.604 | 37/64 | 0.531 |
| 5/8 | 0.642 | 1-1/16 | 1.031 | 1.062 | 1.175 | 1.227 | 0.444 | 27/64 | 0.378 |
| 3/4 | 0.768 | 1-1/4 | 1.212 | 1.250 | 1.383 | 1.443 | 0.524 | 1/2 | 0.455 |
| 1 | 1.022 | 1-5/8 | 1.575 | 1.625 | 1.796 | 1.876 | 0.700 | 43/64 | 0.591 |
| 1-3/8 | 1.404 | 2-3/16 | 2.119 | 2.188 | 2.416 | 2.526 | 0.940 | 29/32 | 0.810 |
| 1-1/8 | 1.149 | 1-13/16 | 1.756 | 1.812 | 2.002 | 2.093 | 0.780 | 3/4 | 0.658 |
| 1-1/4 | 1.277 | 2 | 1.938 | 2.00 | 2.209 | 2.309 | 0.876 | 27/32 | 0.749 |
| 1-1/2 | 1.531 | 2-3/8 | 2.300 | 2.375 | 2.622 | 2.742 | 1.036 | 1 | 0.902 |
| 2-1/4 | 2.305 | 3-1/2 | 3.388 | 3.500 | 3.862 | 4.041 | 1.548 | 1-1/2 | 1.327 |
| 1-3/4 | 1.785 | 2-3/4 | 2.662 | 2.750 | 3.035 | 3.175 | 1.196 | 1-5/32 | 1.054 |
| 2 | 2.039 | 3-1/8 | 3.025 | 3.125 | 3.449 | 3.608 | 1.388 | 1-11/32 | 1.175 |
| 2-1/2 | 2.559 | 3-7/8 | 3.750 | 3.875 | 4.275 | 4.474 | 1.708 | 1-21/32 | 1.479 |
| A320 Gr B8M Metric Nut Size | Thread Pitch |
s | e | m | ||
|---|---|---|---|---|---|---|
| Width Flats |
Width Corners |
Height | ||||
| min. | max. | min. | min. | max. | ||
| M1.6 | 0.35 | 3.02 | 3.20 | 3.41 | 1.05 | 1.30 |
| M3 | 0.5 | 5.32 | 5.50 | 6.01 | 2.15 | 2.40 |
| M3.5* | 0.6 | 5.82 | 6.00 | 6.58 | 2.55 | 2.80 |
| M2 | 0.4 | 3.82 | 4.00 | 4.32 | 1.35 | 1.60 |
| M2.5 | 0.45 | 4.82 | 5.00 | 5.45 | 1.75 | 2.00 |
| M4 | 0.7 | 6.78 | 7.00 | 7.66 | 2.9 | 3.2 |
| M5 | 0.8 | 7.78 | 8.00 | 8.79 | 4.4 | 4.7 |
| M10 | 1.5 | 15.73 | 16.00 | 17.77 | 8.04 | 8.40 |
| M6 | 1 | 9.78 | 10.00 | 11.05 | 4.9 | 5.2 |
| M8 | 1.25 | 12.73 | 13.00 | 14.38 | 6.44 | 6.80 |
| M12 | 1.75 | 17.73 | 18.00 | 20.03 | 10.37 | 10.80 |
| M14* | 2 | 20.67 | 21.00 | 23.36 | 12.1 | 12.8 |
| M20 | 2.5 | 29.16 | 30.00 | 32.95 | 16.9 | 18.0 |
| M16 | 2 | 23.67 | 24.00 | 26.75 | 14.1 | 14.8 |
| M18* | 2.5 | 26.16 | 27.00 | 29.56 | 15.1 | 15.8 |
| M22* | 2.5 | 33 | 34 | 37.29 | 18.1 | 19.4 |
| M24 | 3 | 35 | 36 | 39.55 | 20.2 | 21.5 |
| M33* | 3.5 | 49 | 50 | 55.37 | 27.4 | 28.7 |
| M27* | 3 | 40 | 41 | 45.2 | 22.5 | 23.8 |
| M30 | 3.5 | 45 | 46 | 50.85 | 24.3 | 25.6 |
| M36 | 4 | 53.8 | 55.0 | 60.79 | 29.4 | 31.0 |
| M45* | 4.5 | 68.1 | 70.0 | 76.95 | 34.4 | 36.0 |
| M39* | 4 | 58.8 | 60.0 | 66.44 | 31.8 | 33.4 |
| M42 | 4.5 | 63.1 | 65.0 | 71.3 | 32.4 | 34.0 |
| M48 | 5 | 73.1 | 75.0 | 82.6 | 36.4 | 38.0 |
| M60* | 5.5 | 87.8 | 90.0 | 99.21 | 46.4 | 48.0 |
| M52* | 5 | 78.1 | 80.0 | 88.25 | 40.4 | 42.0 |
| M56 | 5.5 | 82.8 | 85.0 | 93.56 | 43.4 | 45.0 |
| M64 | 6 | 92.8 | 95.0 | 104.86 | 49.1 | 51.0 |
| Bolt Size (in) | TPI | Torque (ft-lbs) | Torque (Nm) |
|---|---|---|---|
| 1/4 | 20 | 7.5 | 10.2 |
| 5/16 | 18 | 13.5 | 18.3 |
| 3/8 | 16 | 24 | 32.5 |
| 7/16 | 14 | 38 | 51.5 |
| 1/2 | 13 | 60 | 81.3 |
| 9/16 | 12 | 85 | 115.3 |
| 5/8 | 11 | 120 | 162.7 |
| 3/4 | 10 | 210 | 284.7 |
| 7/8 | 9 | 345 | 467.8 |
| 1 | 8 | 515 | 698.1 |
| Property | Value |
|---|---|
| Density | 7.98 g/cm³ |
| Thermal Conductivity | 16.3 W/m·K |
| Coefficient of Thermal Expansion | 16.0 x 10⁻⁶ /°C |
| Melting Range | 1375°C to 1400°C |
| Hardness | 85–95 HRB |
Get A320 B8M Socket Head Cap Screw With Low in Carbon, Check Chemical Composition
0.08% max
Carbon
2.00% max
Mn
1.00% max
Si
10.0 - 14.0%
Ni
0.045%
Ph
16.0 - 18.0%
Cr
0.030%
S
Stockist of ASTM A320 Grade B8M Threaded Rod used in construction, Check Weight Chart & Equivalent Grades
| Bolt Size (inches) | Thread Pitch (inches) | Nominal Diameter (mm) | Weight per 100 mm (kg) |
|---|---|---|---|
| 1/4" | 20 | 6.35 | 0.056 |
| 5/16" | 18 | 7.94 | 0.087 |
| 3/8" | 16 | 9.53 | 0.123 |
| 7/16" | 14 | 11.11 | 0.168 |
| 1/2" | 13 | 12.70 | 0.211 |
| 5/8" | 11 | 15.88 | 0.314 |
| 3/4" | 10 | 19.05 | 0.452 |
| 7/8" | 9 | 22.23 | 0.612 |
| 1" | 8 | 25.40 | 0.787 |
| 1 1/4" | 7 | 31.75 | 1.24 |
| 1 1/2" | 6 | 38.10 | 1.78 |
| 2" | 4 | 50.80 | 3.15 |
| Grade | Country | 304 | 304 L | 310 | 316 | 316 L | 410 | 431 |
|---|---|---|---|---|---|---|---|---|
| BS | British | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 |
| EN | European | 1.4301 | 1.4306 | 1.4841 | 1.4401 | 1.4404 | 1.4006 | 1.4057 |
| ASTM | America | ASTM A 193 Gr B8 | ASTM A 320 Ge B8 | ASTM A 479 | ASTM A 193 Gr B8C | ASTM A 320 Ge B8C | ||
| UNS | North America | S30400 | S30403 | S31000 | S31600 | S31603 | S41000 | S43100 |
| DIN | German | X 5CrNi1810 | X 2CrNi1911 | X 12 CrNi 25 21 | X 5 CrNiMo 17 13 2 | X 2 CrNiMo 17 13 2 | X 10Cr13 | X 20CrNi172 |
Tensile Strength
70,000 psi (485 MPa)
Yield Strength
30,000 psi (205 MPa)
Elongation
40%
Melting Point
1371°C to 1399°C
| Country Name | Delivery Time |
|---|---|
| Jordan | |
| Saudi Arabia | |
| Singapore | |
| Malaysia | |
| Oman | |
| Turkey | |
| UAE | |
| Egypt | |
| South Africa |
| Property | Performance |
|---|---|
| Corrosion Resistance | Excellent resistance to corrosion. |
| Strength | High tensile and yield strength. |
| Temperature Resistance | -200°F to 800°F. |
| Leakage Resistance | Prevents leaks in high-pressure systems. |
| Hydrogen Embrittlement | Low susceptibility to embrittlement. |
| Process Step | Quality |
|---|---|
| Material Selection | Ensures corrosion resistance and strength. |
| Heat Treatment | Improves strength, toughness, and corrosion resistance. |
| Cold Working | Enhances tensile strength and refines surface finish. |
| Thread Rolling | Increases thread strength and alignment for better performance. |
| Quality Control | Ensures fasteners meet standards for strength and durability. |
| Surface Treatment | Improves corrosion resistance and provides smooth finish. |
- ➤Material Type: stainless steel.
- ➤Impact Test: Charpy V-notch test.
- ➤Temperature: Designed for low-temperature
- ➤Toughness Requirement: Minimum 20 ft-lb (27 J) at -50°F.
- ➤Low-Temperature Performance: Good resistance to brittle fracture.
- ➤Toughness Variability: Can vary based on processing and conditions.
As a reliable ASTM A320 B8M stud bolt supplier in India, we provide premium-quality stud bolts that meet stringent industry standards for impact toughness, strength, and corrosion resistance, ensuring optimal performance and durability in challenging environments.