SA 320 Grade L7 hex bolts manufacturer in India

ASTM A320 L7 bolts manufacturer in india

Get connected with reliable A320 Gr L7 socket head cap screws and A320 L7 bolt material suppliers in Mumbai

ASTM A320 L7 Bolts

ASTM A320 L7 Bolts

A320 L7 Hex Bolts

A320 L7 Hex Bolts

ASTM A320 L7 Anchor Bolts

ASTM A320 L7 Anchor Bolts

Get connected with verified A320 L7 Bolts manufacturer in India, check SA 320 Grade L7 hex bolts sizes and price per kg in Middle East.

Check sizes, length and coating of A320 L7 bolts and A320 Gr L7 socket head cap screws

ASTM A320 L7 bolts specifications

ASTM A320 L7 bolts specifications

Forms Dimensions Size Length
Nuts, Bolts, Washers, Screw ANSI B18.2.1, B18.3, DIN 931/ 933 M2 – M160 12mm – 1200mm
Coating Head Drive 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

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

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

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

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