ASTM A320 B8 Stud Bolts
Manufacturer of SA 320 B8 Class 2 Stud Bolt in India, With Accurate Dimentions
Table of Content
- What do you mean by ASTM A320 B8 ?
- Specifications of ASTM A320 B8
- Types of ASTM A320 B8 Bolts
- A320 Gr B8 Hex Bolts Dimensions Chart
- A320 Grade B8 Class 2 Hex Nuts Size Chart
- ASTM A320 Grade B8 Bolts Torque Chart
- A320 B8 Bolt Physical Properties
- Chemical Composition of ASTM A 320 GR B8 Flange Bolts
- ASTM A320 B8 Hex Bolts Weight Chart
- Equivalent Grade of ASTM A320 B8 Anchor Bolts
- Mechanical Properties of SA 320 Grade B8 Hex Bolts
- Delivery Time Table of ASTM A320 Gr B8 Bolt
- What is the Difference Between Grade B8 and Grade B8M?
- What are the temperature limits for ASTM A320 Grade B8?
- What is the Cost Comparison of Astm A320 Grade B8 With Other Grades?
- Can ASTM A320 Grade B8 Fasteners Be Used in High-pressure Applications?
ASTM A320 B8 Stud Bolts Manufacturer in India, refers to a specification for fasteners, such as bolts and nuts, made from 304 stainless steel. This grade is designed for low-temperature service, offering excellent corrosion resistance and strength. It is commonly used in environments where durability and resistance to harsh conditions are essential.
Stockist of ASTM A320 Grade B8 Stud Bolts & SA 320 B8 Hex Bolts in Mumbai, Available in a Variety of Sizes , Check Specification
ASTM A320 B8 Bolt Sizes
- Imperial Sizes: 1/14" - 4"
- Metric Size: M 10-M 100
- Length: 12 to 1200 MM
Benefits
- Low-Temperature Toughness
- High Tensile Strength
- Corrosion Resistance
- Non-Magnetic
Certification
- MTC as per EN 10204 / 3.1B
- 100% Radiography Test Report
- Raw Materials Certificate
- Compliance Certificates
Neck type
- Hex, Square
- Oval
- Triangular
- Knurled
Production process
- Hot Forging
- Machining and CNC
- Cold Forging
- Customized
Surface Coating
- Cadmium, Galvanized
- Black Oxide
- Teflon, Xylan, Zinc
- Others Upon Request
Threads Types
- METRIC
- BSF, UNC
- BSW
- UNF
Head Types
- Round,Flat
- Hex flange
- T-head & Triangular
- Hex, Square
Finishing
- Geometry, Dacroment, Hot Dip Galvanised (HDG),
- Zinc , black oxide, BZP
- Anodizing, nickel plated, plated zinc-nickel
Applications
- Chemical and Petrochemical Industries
- Power Generation
- Marine Applications
- Aerospace and Aviation
Packaging Methods
- Small Pack
- Pallet
- Corrugated Box
- Carton
Testing Methods
- Corrosion Testing
- Tensile Testing
- Hardness Testing
- Impact Testing
Cutting Methods
- Angle Grinder
- Threaded Rod Cutter
- Hacksaw
Disadvantages
- Brittleness at High Temperatures
- Limited corrosion resistance
- Higher Cost
Documentation
- Fumigation Certificates
- Guarantee Letter
- Raw Material Test Reports
SA 320 Gr B8 U-Bolts
ASTM A320 B8 Hex Head Bolt
A320 B8 J-Bolts
SA 320 B8 Square Head Bolts
ASTM A320 Grade B8 Eye Bolts
ASTM A320 B8 Heavy Hex Bolt
ASTM A320 Gr B8 Shoulder Bolts
A320 Grade B8 Flange Bolts
Find ASTM A320 Grade B8 Class 1 Bolts & A320 gr 8 U Bolt With Size Ranging From M10 - M110, Check Size Chart
| Heavy Hex Bolt Dia | D | F | C | H | |||||
|---|---|---|---|---|---|---|---|---|---|
| Body Dia | Width Flats | Width Corners | Height | ||||||
| Max | Min | Basic | Max | Max | Min | Min | Max | Basic | |
| 7/8 | 0.895 | 1.394 | 1-7/16 | 1.438 | 1.660 | 1.589 | 0.531 | 0.604 | 37/64 |
| 5/8 | 0.642 | 1.031 | 1-1/16 | 1.062 | 1.227 | 1.175 | 0.378 | 0.444 | 27/64 |
| 1/2 | 0.515 | 0.850 | 7/8 | 0.875 | 1.010 | 0.969 | 0.302 | 0.364 | 11/32 |
| 3/4 | 0.768 | 1.212 | 1-1/4 | 1.250 | 1.443 | 1.383 | 0.455 | 0.524 | 1/2 |
| 1-1/8 | 1.149 | 1.756 | 1-13/16 | 1.812 | 2.093 | 2.002 | 0.658 | 0.780 | 3/4 |
| 1 | 1.022 | 1.575 | 1-5/8 | 1.625 | 1.876 | 1.796 | 0.591 | 0.700 | 43/64 |
| 1-3/8 | 1.404 | 2.119 | 2-3/16 | 2.188 | 2.526 | 2.416 | 0.810 | 0.940 | 29/32 |
| 1-1/4 | 1.277 | 1.938 | 2 | 2.00 | 2.309 | 2.209 | 0.749 | 0.876 | 27/32 |
| 2-1/4 | 2.305 | 3.388 | 3-1/2 | 3.500 | 4.041 | 3.862 | 1.327 | 1.548 | 1-1/2 |
| 1-1/2 | 1.531 | 2.300 | 2-3/8 | 2.375 | 2.742 | 2.622 | 0.902 | 1.036 | 1 |
| 2 | 2.039 | 3.025 | 3-1/8 | 3.125 | 3.608 | 3.449 | 1.175 | 1.388 | 1-11/32 |
| 1-3/4 | 1.785 | 2.662 | 2-3/4 | 2.750 | 3.175 | 3.035 | 1.054 | 1.196 | 1-5/32 |
| 2-1/2 | 2.559 | 3.750 | 3-7/8 | 3.875 | 4.474 | 4.275 | 1.479 | 1.708 | 1-21/32 |
| A320 Grade B8 Nut Size | M1.6 | M3 | M3.5* | M2 | M2.5 | M4 | M5 | M10 | M6 | M8 | M12 | M14* | M20 | M16 | M18* | M22* | M24 | M33* | M27* | M30 | M36 | M45* | M39* | M42 | M48 | M60* | M52* | M56 | M64 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Pitch | 0.35 | 0.5 | 0.6 | 0.4 | 0.45 | 0.7 | 0.8 | 1.5 | 1 | 1.25 | 1.75 | 2 | 2.5 | 2 | 2.5 | 2.5 | 3 | 3.5 | 3 | 3.5 | 4 | 4.5 | 4 | 4.5 | 5 | 5.5 | 5 | 5.5 | 6 | ||
| s | Width Flats | min. | 3.02 | 5.32 | 5.82 | 3.82 | 4.82 | 6.78 | 7.78 | 15.73 | 9.78 | 12.73 | 17.73 | 20.67 | 29.16 | 23.67 | 26.16 | 33 | 35 | 49 | 40 | 45 | 53.8 | 68.1 | 58.8 | 63.1 | 73.1 | 87.8 | 78.1 | 82.8 | 92.8 |
| max. | 3.2 | 5.5 | 6 | 4 | 5 | 7 | 8 | 16 | 10 | 13 | 18 | 21 | 30 | 24 | 27 | 34 | 36 | 50 | 41 | 46 | 55 | 70 | 60 | 65 | 75 | 90 | 80 | 85 | 95 | ||
| e | Width Corners | min. | 3.41 | 6.01 | 6.58 | 4.32 | 5.45 | 7.66 | 8.79 | 17.77 | 11.05 | 14.38 | 20.03 | 23.36 | 32.95 | 26.75 | 29.56 | 37.29 | 39.55 | 55.37 | 45.2 | 50.85 | 60.79 | 76.95 | 66.44 | 71.3 | 82.6 | 99.21 | 88.25 | 93.56 | 104.86 |
| m | Height | min. | 1.05 | 2.15 | 2.55 | 1.35 | 1.75 | 2.9 | 4.4 | 8.04 | 4.9 | 6.44 | 10.37 | 12.1 | 16.9 | 14.1 | 15.1 | 18.1 | 20.2 | 27.4 | 22.5 | 24.3 | 29.4 | 34.4 | 31.8 | 32.4 | 36.4 | 46.4 | 40.4 | 43.4 | 49.1 |
| max. | 1.3 | 2.4 | 2.8 | 1.6 | 2 | 3.2 | 4.7 | 8.4 | 5.2 | 6.8 | 10.8 | 12.8 | 18 | 14.8 | 15.8 | 19.4 | 21.5 | 28.7 | 23.8 | 25.6 | 31 | 36 | 33.4 | 34 | 38 | 48 | 42 | 45 | 51 | ||
SA 320 B8 Socket Head Bolts With 70–90 HRB Hardness, Check Equivalent Grades
| Bolt Size (inches) | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| 1/4" | 5-7 | 6.8-9.5 |
| 5/16" | 10-13 | 13.6-17.6 |
| 3/8" | 15-20 | 20.3-27.1 |
| 7/16" | 22-30 | 29.8-40.7 |
| 1/2" | 35-50 | 47.5-67.8 |
| 9/16" | 55-75 | 74.6-101.5 |
| 5/8" | 75-100 | 101.5-135.6 |
| 3/4" | 140-190 | 189.8-257.5 |
| 7/8" | 225-300 | 304.2-406.8 |
| 1" | 350-475 | 474.5-644.3 |
| Property | Value |
|---|---|
| Density | 7.90 g/cm³ |
| Thermal Conductivity | 16.2 W/m·K |
| Coefficient of Thermal Expansion | 15.9 x 10⁻⁶ /°C |
| Melting Range | 1400°C (2550°F) |
| Hardness | Rockwell B 90 maximum |
0.08% max
Carbon
2.00% max
Mn
1.00% max
Si
8.0-10.5%
Ni
0.045% max
Ph
18.0-20.0%
Cr
0.030% max
S
| Bolt Size (inches) | Weight per 100 pieces (kg) | Weight per 100 pieces (lbs) |
|---|---|---|
| 1/4" x 1" | 0.63 | 1.39 |
| 1/4" x 2" | 1.26 | 2.78 |
| 5/16" x 1" | 1.04 | 2.29 |
| 5/16" x 2" | 2.08 | 4.58 |
| 3/8" x 1" | 1.47 | 3.24 |
| 3/8" x 2" | 2.94 | 6.49 |
| 1/2" x 1" | 2.92 | 6.44 |
| 1/2" x 2" | 5.84 | 12.87 |
| 5/8" x 1" | 4.56 | 10.04 |
| 5/8" x 2" | 9.12 | 20.08 |
| 3/4" x 1" | 6.65 | 14.65 |
| 3/4" x 2" | 13.30 | 29.30 |
| 7/8" x 1" | 9.79 | 21.58 |
| 7/8" x 2" | 19.58 | 43.19 |
| 1" x 1" | 13.02 | 28.70 |
| 1" x 2" | 26.04 | 57.40 |
A320 grade B8 Heavy Hex Bolt with Excellent Mechanical Properties , Check Properties
| Grade | Country | 304 | 304 L | 310 | 316 | 316 L | 410 | 431 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
| 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
75,000 psi (517 MPa)
Yield Strength
30,000 psi (207 MPa)
Elongation
40%
Melting Point
1400°C (2550°F)
| Country Name | Delivery Time |
|---|---|
| Saudi Arabia | |
| Singapore | |
| Malaysia | |
| Oman | |
| Turkey | |
| UAE | |
| Egypt | |
| Jordan | |
| South Africa |
| Property | Grade B8 | Grade B8M |
|---|---|---|
| Material | Austenitic stainless steel (304) | Austenitic stainless steel (304L/316) |
| Corrosion Resistance | Good | Excellent |
| Key Alloying Element | Mainly chromium (Cr) | Chromium (Cr) + Molybdenum (Mo) |
| Common Use | General industrial applications | Marine, chemical plants, or saltwater environments |
| Typical Grade | 304 stainless steel | 316 stainless steel (higher corrosion resistance) |
-
➤Service Temperature Range:
- -325°F to 800°F (-200°C to 427°C)
-
➤Temperature Effects:
- Above 800°F: Material may lose strength.
- Below -325°F: Material may become brittle.
As an esteemed ASTM A320 B8 stud bolts manufacturer in India, we specialize in producing high-quality stud bolts that meet industry standards for performance, strength, and reliability, ensuring optimal performance in challenging environments.
| Grade | Material | Corrosion Resistance | Cost |
|---|---|---|---|
| Grade B8 | 304 Stainless Steel | Good (mild environments) | Moderate |
| Grade B8M | 316 Stainless Steel | Excellent (harsh, marine, chemical) | Higher |
| Grade B6 | 304 Stainless Steel (higher carbon) | Good (high-temp environments) | Similar to B8 |
| Grade B8C | 304 Stainless Steel (higher carbon, enhanced strength) | Good (higher strength) | Similar to B8 |
- ➤Grade B8: Suitable for moderate high-pressure applications.
- ➤304 stainless steel: Good strength, but not for extreme pressure.
- ➤For very high pressure or high temp, use Grade B8M or stronger alloys.
As a trusted ASTM A320 B8 stud bolts supplier in India, we provide high-quality stud bolts that meet rigorous standards for performance and durability, ensuring reliability in a wide range of applications, especially those requiring resistance to low temperatures and corrosion.