ASTM A320 L7 Stud Bolts

High Grade Quality of A320 Grade L7 Studs Manufacturer in India

SA320 Grade L7 Studs

ASTM A320 Grade L7 Stud Bolt

Stud Bolt L7
Finding the Most Trusted and Certified ASTM A320 L7 Stud Bolts Manufacturer in India? You Have Come to the Right Place Click Here to Contact
Table of Content
- ASTM A320 L7 Stud Bolts Specifications
- Types of ASTM A320 Grade L7 Stud Bolt
- Dimension Chart of A320 L7 Stud Bolts
- Applications of ASTM A320 L7 Threaded Rod
- ASME SA320 Grade L7 Studs Chemical Composition
- Equivalent Grades of A320 Gr L7 Double End Stud Bolts
- Stud Bolt ASTM A320 L7 Mechanical Properties
- L7 Fully Threaded Studs Impact Test Requirements
- What are the Applicable Coatings of SA 320 Gr L7 Threaded Studs?
- Recommended Hardware ASTM A320 L7
- Hardness of ASTM A320 Gr L7 Tap End Stud Bolts
- A320 Grade L7 Hex Head Stud Bolt Stress Rupture Requirements
- A320 L7 Stud Bolts Torque Chart
- Advantages of Using SA 320 L7 Welding Studs
- ASTM A 320 Gr L7 Anchor Stud Bolt Heat Treatment
- Our Dealers and Distributors in Below Countries
- What are the Factors Check for Accurate Size of SA 320 Grade L7 Eye Stud Bolt?
- ASTM A320 Grade L7 Flange Stud Bolt Test Temperature
- Delivery Schedule of ASTM A320 L7 Stud Bolts

Supplier of Grade 7M Threaded Studs in Mumbai, At Lowest Price
ASTM A320 L7 Stud Bolts Specifications
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- Metric Size : M2-M160
- Imperial Sizes : 3/4″ – 1-1/2″
- Length : Up to 1200 MM
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- UNC BSF
- METRIC
- BSW
- UNF
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- Rounded
- Sheared
- Chamfer, Flat
- Saw Cut
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- Perfect for High-stress Applications
- High Tensile Strength
- Ideal for Harsh Environments
- High Corrosion
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- Cold Drawn
- Threading

- Coarse Threads
- Fine Threads
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- Aerospace and Defense
- Petrochemical Industry
- Oil and Gas Industry
- Power Generation
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- USA, Dubai
- Oman, Saudi Arabia
- South Africa
- UAE, Abu Dhabi
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- ASTM A320
- ASME SA320
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- CNC machined
- Cold Forging
- Hot Forging
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- Pallet
- Carton
- Small Pack
- Corrugated Box
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- Custom Logo
- Heat Number
- Material Grade
- Specification
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- Micro and MacroTest
- Pitting Resistance Test
- Mechanical Testing
- Flaring Test
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- Plated Zinc-nickel
- Self-Colour, HDG, BZP
- Geometry, Dacroment,
- Zinc, Black Oxide,
- Nickel Plated, Anodizing
Types of ASTM A320 Grade L7 Stud Bolt
ASTM A320 L7 Stud Bolts Supplier in India Offers a Variety of the Most Popular Types.

A320 L7 Stud Bolts

ASTM A320 L7 Threaded Rod

A320 Gr L7 Double End Stud Bolts

L7 Fully Threaded Studs

ASTM A 320 Gr L7 Threaded Studs

SA 320 Gr L7 Tap End Stud Bolts

SA 320 L7 Welding Studs

ASTM A320 L7 Carbon Steel Anchor Stud Bolt

SA 320 Grade L7 Eye Stud Bolt

ASTM A320 Grade L7 Flange Stud Bolt

A320 Grade L7 Hex Head Stud Bolt

Grade 7M Knurled Stud Bolt

ASTM A320 Gr L7 Metric Studs

ASTM A 320 Gr L7 Hex Stud Bolt

SA 320 Gr L7 Continuous Threaded Stud Bolts

SA 320 L7 Plain Stud Bolt
ASTM A320 L7 Carbon Steel Welding Studs Available From 3/8″ Diameter, Refer Dimension Chart
Dimension Chart of A320 L7 Stud Bolts
| Thread size (d) | M12 M12 x 1.25 |
M10 M10 x 1.25 |
M14 M14 x 1.5 |
M18 M18 x 1.5 |
M16 M16 x 1.5 |
M20 M20 x 1.5 |
M24 M24 x 2.0 |
M22 M22 x 1.5 |
M27 M27 x 2.0 |
M33 M33 x 2.0 |
M30 M30 x 2.0 |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | Approx mass in 1000 /kg units | ||||||||||||
| Nominal Size | min | max | |||||||||||
| 25 | 24.58 | 25.42 | 18.2 | 12.6 | – | – | – | – | – | – | – | – | – |
| 30 | 29.58 | 30.42 | 21.8 | 15.1 | 29.8 | – | 40.0 | – | – | – | – | – | – |
| 35 | 34.5 | 35.5 | 25.5 | 17.5 | 34.8 | 57.9 | 46.6 | – | – | – | – | – | – |
| 40 | 39.5 | 40.5 | 29.1 | 20.1 | 39.8 | 66.1 | 53.3 | 83.3 | – | – | – | – | – |
| 45 | 44.5 | 45.5 | 32.7 | 22.5 | 44.8 | 74.4 | 60.0 | 93.7 | – | 115 | – | – | – |
| 50 | 49.5 | 50.5 | 36.4 | 25.1 | 49.7 | 82.7 | 66.6 | 104 | 150 | 128 | – | – | – |
| 55 | 54.4 | 55.6 | 40.0 | 27.5 | 54.7 | 90.9 | 73.3 | 115 | 165 | 141 | 213 | – | – |
| 60 | 59.4 | 60.6 | 43.7 | 30.1 | 59.7 | 99.2 | 80.0 | 125 | 180 | 154 | 232 | – | 284 |
| 65 | 64.4 | 65.6 | 47.3 | 32.5 | 64.6 | 107 | 86.6 | 135 | 195 | 166 | 251 | 378 | 308 |
| 70 | 69.4 | 70.6 | 50.9 | 35.2 | 69.6 | 116 | 93.3 | 146 | 210 | 179 | 271 | 407 | 332 |
| 75 | 74.4 | 75.6 | 54.7 | 37.7 | 74.6 | 124 | 100 | 156 | 225 | 192 | 290 | 437 | 355 |
| 80 | 79.4 | 80.6 | 58.2 | 40.2 | 79.6 | 132 | 107 | 167 | 240 | 205 | 310 | 466 | 379 |
| 90 | 89.3 | 90.7 | 65.5 | 45.2 | 89.5 | 149 | 120 | 187 | 270 | 230 | 348 | 524 | 427 |
| 100 | 99.3 | 100.7 | 72.8 | 50.2 | 99.5 | 165 | 133 | 208 | 300 | 256 | 387 | 582 | 474 |
| 110 | 109.3 | 110.7 | 80.0 | 56.2 | 109 | 182 | 147 | 229 | 330 | 282 | 426 | 640 | 521 |
| 120 | 119.3 | 120.7 | 87.3 | 60.2 | 119 | 198 | 160 | 250 | 360 | 307 | 464 | 698 | 569 |
| 130 | 129.2 | 130.8 | 94.6 | 65.1 | 129 | 215 | 173 | 271 | 390 | 333 | 503 | 757 | 616 |
| 140 | 139.2 | 140.8 | 102 | 70.1 | 139 | 231 | 187 | 291 | 420 | 358 | 542 | 815 | 664 |
| 150 | 149.2 | 150.8 | 109 | 75.1 | 149 | 248 | 200 | 312 | 450 | 383 | 580 | 873 | 711 |
| 160 | 159.2 | 160.8 | 117 | 80.1 | 159 | 265 | 213 | 333 | 480 | 410 | 619 | 931 | 758 |
| 170 | 169.2 | 170.8 | 124 | 85.0 | 169 | 281 | 226 | 354 | 510 | 435 | 658 | 990 | 806 |
| 180 | 179.2 | 180.8 | 131 | 90.0 | 180 | 298 | 239 | 375 | 540 | 461 | 696 | 1048 | 853 |
| 190 | 189.08 | 190.93 | 138 | 95.0 | 190 | 315 | 252 | 396 | 570 | 486 | 735 | 1106 | 901 |
| 200 | 199.08 | 200.93 | 146 | 99.9 | 199 | 332 | 265 | 416 | 600 | 512 | 774 | 1164 | 948 |
| 220 | 219.08 | 220.93 | 160 | – | 218 | 366 | 291 | 456 | 660 | 563 | 851 | 1281 | 1043 |
SA 320 Gr L7 Double End Stud Bolts Use in High Temperature Bolting Applications
Applications of ASTM A320 L7 Threaded Rod

Refer Chemical Composition and Equivalent Material of L7 Fully Threaded Studs
ASME SA320 Grade L7 Studs Chemical Composition
ASTM A320 L7 Stud Bolts in India Provides Accurate Chemical Composition of Fasteners.
|
Carbon 0.38 – 0.48% |
Manganese (Mn) 0.75 – 1% |
Silicon (Si) 0.15 – 0.35% |
Phosphorus (P) 0.035% (Max.) |
|
Chromium (Cr) 0.8 – 1.1% |
Sulfur (S) 0.04% (Max.) |
Molybdenum (Mo) 0.15 – 0.25% |
Equivalent Grades of A320 Gr L7 Double End Stud Bolts
ASTM A320 L7 Stud Bolts Manufacturer in India offers Fasteners with Equivalent Material Grades

UNS (North America)
UNS S30400

BS (England)
970

EN (European)
1.4301

AFNOR (France)
Z10C13

DIN (German)
X 5CrNi1810
Stud Bolt ASTM A320 L7 Mechanical Properties
A320 Grade L7 Studs Supplier in India Provides Accurate Mechanical Properties
| Grade | Size | Yield, ksi, min | Tensile, ksi min | Elong, % min | Charpy Impact | RA, %, min |
|---|---|---|---|---|---|---|
| L7 | up to 21/2 | 105 | 125 | 16 | -150° F | 50 |
L7 Fully Threaded Studs Impact Test Requirements
| Grade | Test Temperature | |
|---|---|---|
| °C | °F | |
| Grade L7, L7A, L7B, L7C | -101 | -150 |
What are the Applicable Coatings of SA 320 Gr L7 Threaded Studs?
Black Phosphate
PTFE Coated
Zinc Plated
Recommended Hardware ASTM A320 L7
| Grade | Washers | Nuts |
|---|---|---|
| Grade L7 | F436 | A194 Grade 4 or 7 |
Hardness of ASTM A320 Gr L7 Tap End Stud Bolts
| Tensile Class | Brinell Hardness (No) | Approx Rockwell Hardness – B & C | |
|---|---|---|---|
| Max | Min | ||
| A, B & C | 248 – 341 | 27 HRC | 24 HRC |
| D | 248 – 321 | 35 HRC | 24 HRC |
A320 Grade L7 Hex Head Stud Bolt Stress Rupture Requirements
| Tensile Class | Test Temp °C (°F) | Time to Rupture, min, h [Note] | Stress, min | Elongation, min, % | |
|---|---|---|---|---|---|
| Mpa | ksi | ||||
| A, B &; C | 650 (1200) | 100 | 385 | 56 | 5 |
| D | 650 (1200) | 100 | 275 | 40 | 5 |
A320 L7 Stud Bolts Torque Chart
A320 Grade L7 Studs Manufacturer in India Offers Accurate Torque Values
| Bolt Dia | Torque Nm | ||
|---|---|---|---|
| 100% Final Torque | 30% Initial Torque | 70% Torque | |
| 1/2 | 103 | 31 | 73 |
| 9/16 | 149 | 45 | 104 |
| 5/8 | 206 | 62 | 145 |
| 1 | 885 | 266 | 620 |
| 3/4 | 366 | 110 | 256 |
| 7/8 | 591 | 178 | 414 |
| 1.3/8 | 2478 | 1158 | 1734 |
| 1.1/8 | 1299 | 389 | 910 |
| 11/4 | 1828 | 548 | 1279 |
| 1.5/8 | 4227 | 1268 | 2960 |
| 1.1/2 | 3272 | 983 | 2290 |
| 1.9/16 | 3723 | 1117 | 2606 |
| 2 | 8097 | 2430 | 5667 |
| 1.3/4 | 5320 | 1596 | 3724 |
| 1.7/8 | 6604 | 1981 | 4623 |
| 2.1/4 | 11707 | 3512 | 8195 |
| 2.1/2 | 16224 | 4867 | 11356 |
Advantages of Using SA 320 L7 Welding Studs
Corrosion Resistance
Greater Strength
Improved Aesthetics
Durability
ASTM A 320 Gr L7 Anchor Stud Bolt Heat Treatment
| Method | Temperature |
|---|---|
| Heat Treatment | 840°F (450°C) |
Our Dealers and Distributors in Below Countries
ASTM A320 L7 Stud Bolts Supplier in India Supply A320 L7 Stud Bolts in Various Countries
| Gabon | Morocco | Ethiopia | Zambia | Ghana |
|---|---|---|---|---|
| Tunisia | – | New South Wales | Mozambique | Egypt |
| Nigeria | South Africa | Saudi Arabia | UAE | Oman |
| Angola | Tanzania | USA | Algeria | Kenya |
What are the Factors Check for Accurate Size of SA 320 Grade L7 Eye Stud Bolt?

ASTM A320 Grade L7 Flange Stud Bolt Test Temperature
650°C (1200°F)
Delivery Schedule of ASTM A320 L7 Stud Bolts
| Country Name | Delivery Time |
|---|---|
| Saudi Arabia | 7 days |
| Jordan | 21 days |
| Singapore | 8 days |
| Egypt | 18 days |
| Indonesia | 9 days |
| South Africa | 25-30 days |
| Thailand | 7 days |
| Australia | 60 days |
| Brazil | 45-60 days |
| UAE/ Dubai | 5 days |
Why Choose KM Steel India ?
- ISO & PED Approved Manufacturer & Supplier for Fastening Products
- Importer and Exporter of Hex Bolts, Threaded Rod, Studs, Socket Head cap screws in Maharashtra.
- Top 5 Trader & Wholesaler of Set screws, Machine screws, Washers, Heavy Hex head bolt, Double Ended Studs in India, For Low and High Temperature Applications.
- Offer Inexpensive Rates to the local Distributor & Reseller Binondo, Saudi Arabia, Manila, Quezon city, South Africa, UAE, Sharjah, Philippines, Cebu, Penang.
- Stockist of Rivets, Hex Nuts, Lock Nuts, Bolts and Nuts Used in Various Industries and Applications For Fastening and Securing Purposes in Maharashtra.
