SA 320 Grade L7 hex bolts manufacturer in India
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ASTM A320 L7 Bolts
A320 L7 Hex Bolts
ASTM A320 L7 Anchor Bolts
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Table of Content
ASTM A320 L7 bolts specifications
| Forms | Dimensions of A320 gr l7 bolts | Size | Length |
|---|---|---|---|
| Nuts, Bolts, Washers, Screw | ANSI B18.2.1, B18.3, DIN 931/ 933 | M2 – M160 | 12mm – 1200mm |
| Coating for SA-320 l7 hex bolts | Head Drive for ASTM A320 gr. l7 Nut | Head type: | Iso Standard |
| PTFE, zinc plated, black phosphate, hot dip galvanized | Phillips/Slot, Phillips, Slotted, Six-Lobe | Hex, round, flat, hex flange, square | ISO 4033, ISO 4032 |
| Application | International Standard | Diameter | Thread |
| Petrochemical, Power Generation, Oil and Gas | BS, UNI, ANSI, ISO, IS, JIS, GB, ASME, ASTM DIN | 10mm – 200mm | BSW, METRIC, UNF, UNC, BSF, custom |
View online price and applications of A320 L7 heavy hex bolts and SA 320 Gr L7 eye bolt as per ASME B18.2.1 in the Mumbai
Types of ASTM A320 Grade L7 bolts
A320 L7 Heavy Hex Bolt
- Coatings: PTFE, black phosphate, zinc plated, hot dip galvanized
- Sizes: M2 – M160
- Yield strength: 105 ksi
- Length: 12mm – 1200mm
A320 Gr L7 Socket Head Cap Screws
- Applications: Petrochemical, Power Generation, Oil and Gas
- Diameter: 10mm – 200mm
- Tensile strength: 125ksi
ASTM A320 L7 U Bolt
- Hardness : 27 HRC
- Thread types: Metric, Metric Fine, BSW, BSF, UNC, UNF and BA
- Temperature range: up to 450°C (840°F)
Buy ASTM A320 L7 U bolts and SA 320 L7 hex cap screws in a different head styles, drive and sizes
A320 L7 bolt chemical composition
| Elements | Allowable Variation, Under or over, % | Content, % |
|---|---|---|
| Manganese | 0.04 | 2.00 maximum |
| Carbon | 0.01 over | 0.08 maximum |
| Sulfur | 0.005 over | 0.03 maximum |
| Phosphorus | 0.005 over | 0.04 maximum |
| Chromium | 0.20 | 13.50 – 16.00 |
| Silicon | 0.05 | 1.00 maximum |
| Nickel | 0.20 | 24.00 – 27.00 |
| Molybdenum | 0.05 | 1.00 – 1.50 |
| Aluminimumum | 0.05 over | 0.35 maximum |
| Titanium | 0.05 | 1.90 – 2.35 |
| Boron | 0.0004 under to 0.001 over | 0.001 – 0.010 |
| Vanadium | 0.03 | 0.10 – 0.50 |
A320 L7 hex bolts mechanical properties
| Tensile Class | Elongation in 4D minimum, % | Yield strength, 0.2% offset, minimum | Tensile Strength, minimum | Reduction of Area, minimum, % | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | |||
| D | 15 | 105 | 725 | 130 | 895 | 18 |
| A, B and C | 15 | 85 | 585 | 130 | 895 | 18 |
ASTM A320 L7 anchor bolt hardness
| Tensile Class | Brinell Hardness No | Approximate Rockwell Hardness B & C | |
|---|---|---|---|
| minimum | maximum | ||
| D | 248 – 321 | 24 HRC | 35 HRC |
| A, B and C | 248 – 341 | 24 HRC | 27 HRC |
Stress rupture requirements of A320 L7 heavy hex bolt
| Tensile Class | Elongation, minimum, % | Test Temperature °F [°C] | Stress, minimum | Time to Rupture, minimum, h [Note] | |
|---|---|---|---|---|---|
| ksi | Mpa | ||||
| D | 5 | 1200 [650] | 40 | 275 | 100 |
| A, B and C | 5 | 1200 [650] | 56 | 385 | 100 |
Torque chart of A320 Grade L7 bolt
| Proof load (Lbs) | Threads Per Inch< | Clamp load (Lbs) | Bolt Sizes | torqueTightening (Ft Lbs) | ||
|---|---|---|---|---|---|---|
| Galv | Galv+Waxed | Plain | ||||
| 3,350 | 20 | 2,513 | 1/4 | 13 | 5 | 10 |
| 5,500 | 18 | 4,125 | 5/16 | 27 | 11 | 21 |
| 8,150 | 16 | 6,113 | 3/8 | 48 | 19 | 38 |
| 11,150 | 14 | 8,363 | 7/16 | 76 | 30 | 61 |
| 14,900 | 13 | 11,175 | 1/2 | 116 | 47 | 93 |
| 19,100 | 12 | 14,325 | 9/16 | 168 | 67 | 134 |
| 23,750 | 11 | 17,813 | 5/8 | 232 | 93 | 186 |
| 35,050 | 10 | 26,288 | 3/4 | 411 | 164 | 329 |
| 48,500 | 9 | 36,375 | 7/8 | 663 | 265 | 530 |
| 63,650 | 8 | 47,738 | 1 | 995 | 398 | 796 |
| 80,100 | 7 | 60,075 | 11/8 | 1,408 | 563 | 1,126 |
| 82,934 | 8 | 62,201 | 11/8 | 1,458 | 583 | 1,166 |
| 101,750 | 7 | 76,313 | 11/4 | 1,987 | 795 | 1,590 |
| 105,006 | 8 | 78,754 | 11/4 | 2,051 | 820 | 1,641 |
| 121,300 | 6 | 90,975 | 13/8 | 2,606 | 1,042 | 2,085 |
| 129,492 | 8 | 97,119 | 13/8 | 2,782 | 1,113 | 2,226 |
| 147,550 | 6 | 110,663 | 11/2 | 3,458 | 1,383 | 2,767 |
| 156,687 | 8 | 117,515 | 11/2 | 3,672 | 1,469 | 2,938 |
| 199,500 | 5 | 149,625 | 13/4 | 5,455 | 2,182 | 4,364 |
| 218,400 | 8 | 163,800 | 13/4 | – | – | 4,778 |
| 262,500 | 41/2 | 196,875 | 2 | 8,203 | 3,281 | 6,563 |
| 290,850 | 8 | 218,138 | 2 | – | – | 7,271 |
| 341,250 | 41/2 | 255,938 | 21/4 | 11,997 | 4,799 | 9,598 |
| 373,801 | 8 | 280,351 | 21/4 | – | – | 10,513 |
| 420,000 | 4 | 315,000 | 21/2 | 16,406 | 6,563 | 13,125 |
| 466,200 | 8 | 349,650 | 21/2 | – | – | 14,569 |
| 468,500 | 4 | 351,263 | 23/4 | 20,124 | 8,050 | 16,100 |
| 515,851 | 8 | 386,888 | 23/4 | – | – | 17,732 |
| 567,150 | 4 | 425,363 | 3 | 26,585 | 10,634 | 21,268 |
| 618,451 | 8 | 463,838 | 3 | – | – | 23,192 |
| 674,500 | 4 | 505,875 | 31/4 | 34,252 | 13,701 | 27,402 |
| 730,550 | 8 | 547,913 | 31/4 | – | – | 29,679 |
| 791,350 | 4 | 593,513 | 31/2 | 43,277 | 17,311 | 34,622 |
| 851,201 | 8 | 638,401 | 31/2 | – | – | 37,240 |
| 917700 | 4 | 688275 | 33/4 | 53,771 | 21,509 | 43,017 |
| 982,300 | 8 | 736,725 | 33/4 | – | – | 46,045 |
| 1052600 | 4 | 789450 | 4 | 65,788 | 26,315 | 52,630 |
| 1,121,950 | 8 | 841,463 | 4 | – | – | 56,098 |
A320 Grade L7 anchor bolt recommended hardware
| Grade | Nuts | Washers |
|---|---|---|
| L7 | A194 Grade 4 or 7 | F436 |
Equivalent grades of ASTM A320 L7 nuts
| A320 L7 | AISI 4140/4142 Quenched and tempered |
|---|
A320 Gr L7 socket cap screws benefits
- High strength
- Durability
- Corrosion resistance
- Versatility
- Temperature resistance
- Compliance with Standards
- Reliable fastening
- Durable performance
ASTM A320 Grade L7 hex bolts dimensions
| Nominal Size | Width Across Flats, F | Full-Size Body Dia, E | Head Height, H | Radius of Fillet, R | Width Across Corners, G | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic | Max. | Min. | Max. | Min. | Basic | Max. | Min. | Max. | Min. | Max. | Min. | |
| 1 1/8 1.1250 |
1 11/16 | 1.688 | 1.631 | 1.149 | 1.098 | 3/4 | 0.780 | 0.658 | 0.09 | 0.03 | 1.949 | 1.859 |
| 1 1/4 1.2500 |
1 7/8 | 1.875 | 1.812 | 1.277 | 1.223 | 27/32 | 0.876 | 0.749 | 0.09 | 0.03 | 2.165 | 2.066 |
| 1 3/8 1.3750 |
2 1/16 | 2.062 | 1.994 | 1.404 | 1.345 | 29/32 | 0.940 | 0.810 | 0.09 | 0.03 | 2.382 | 2.273 |
| 1 1/2 1.5000 |
2 1/4 | 2.250 | 2.175 | 1.531 | 1.470 | 1/ | 1.036 | 0.902 | 0.09 | 0.03 | 2.598 | 2.480 |
| 1 5/8 1.6250 |
2 7/16 | 2.438 | 2.356 | 1.658 | 1.591 | 1 3/32 | 1.116 | 0.978 | 0.09 | 0.03 | 2.815 | 2.616 |
| 1 3/4 1.7500 |
2 5/8 | 2.625 | 2.538 | 1.785 | 1.716 | 1 5/32 | 1.196 | 1.054 | 0.12 | 0.04 | 3.031 | 2.893 |
| 1 7/8 1.8750 |
2 13/16 | 2.812 | 2.719 | 1.912 | 1.839 | 1 1/4 | 1.276 | 1.130 | 0.12 | 0.04 | 3.248 | 3.099 |
| 2 2.000 |
3 | 3.000 | 2.9000 | 2.039 | 1.964 | 1 11/32 | 1.388 | 1.175 | 0.12 | 0.04 | 3.464 | 3.306 |
| 2 1/4 2.2500 |
3 3/8 | 3.375 | 3.262 | 2.305 | 2.214 | 1 1/2 | 1.548 | 1.327 | 0.19 | 0.06 | 3.897 | 3.719 |
| 2 1/2 2.5000 |
3 3/4 | 3.750 | 3.625 | 2.559 | 2.461 | 1 21/32 | 1.708 | 1.479 | 0.19 | 0.06 | 4.330 | 4.133 |
| 1/4 0.2500 |
7/16 | 0.438 | 0.425 | 0.260 | 0.237 | 11/64 | 0.188 | 0.150 | 0.03 | 0.01 | 0.505 | 0.484 |
| 5/16 0.3125 |
1/2 | 0.500 | 0.484 | 0.324 | 0.298 | 7/32 | 0.235 | 0.195 | 0.03 | 0.01 | 0.577 | 0.552 |
| 3/8 0.3750 |
9/16 | 0.562 | 0.544 | 0.388 | 0.360 | 1/4 | 0.268 | 0.226 | 0.03 | 0.01 | 0.650 | 0.620 |
| 7/16 0.4375 |
5/8 | 0.625 | 0.603 | 0.452 | 0.421 | 19/64 | 0.316 | 0.272 | 0.03 | 0.01 | 0.722 | 0.687 |
| 1/2 0.5000 |
3/4 | 0.750 | 0.725 | 0.515 | 0.482 | 11/32 | 0.364 | 0.302 | 0.03 | 0.01 | 0.866 | 0.826 |
| 5/8 0.6250 |
15/16 | 0.938 | 0.906 | 0.642 | 0.605 | 27/64 | 0.444 | 0.378 | 0.06 | 0.02 | 1.083 | 1.033 |
| 3/4 0.7500 |
1 1/8 | 1.125 | 1.088 | 0.768 | 0.729 | 1/2 | 0.524 | 0.455 | 0.06 | 0.02 | 1.299 | 1.240 |
| 7/8 0.8750 |
1 5/16 | 1.312 | 1.269 | 0.895 | 0.852 | 37/64 | 0.604 | 0.531 | 0.06 | 0.02 | 1.516 | 1.447 |
| 1 1.0000 |
1 1/2 | 1.500 | 1.450 | 1.022 | 0.976 | 43/64 | 0.700 | 0.591 | 0.09 | 0.03 | 1.732 | 1.653 |
| 2 3/4 2.7500 |
4 1/8 | 4.125 | 3.988 | 2.827 | 2.711 | 1 13/16 | 1.869 | 1.632 | 0.19 | 0.06 | 4.763 | 4.546 |
| 3 3.000 |
4 1/2 | 4.500 | 4.350 | 3.081 | 2.961 | 2 | 2.060 | 1.815 | 0.19 | 0.06 | 5.196 | 4.959 |
| 3 1/4 3.2500 |
4 7/8 | 4.875 | 4.712 | 3.335 | 3.210 | 2 3/16 | 2.251 | 1.936 | 0.19 | 0.06 | 5.629 | 5.372 |
| 3 1/2 3.5000 |
5 1/4 | 5.250 | 5.075 | 3.589 | 3.461 | 2 5/16 | 2.380 | 2.057 | 0.19 | 0.06 | 6.062 | 5.786 |
| 3 3/4 3.7500 |
5 5/8 | 5.625 | 5.437 | 3.858 | 3.726 | 2 1/2 | 2.572 | 2.241 | 0.19 | 0.06 | 6.495 | 6.198 |
| 4 4.000 |
6 | 6.000 | 5.800 | 4.111 | 3.975 | 2 11/16 | 2.764 | 2.424 | 0.19 | 0.06 | 6.928 | 6.612 |