supplier & manufacturer Of ASME SA320 L7 Stud Bolts In India, View Its Price List



ASTM A320 Bolts


What is ASTM A320 Grade L7?

ASTM A320 Bolts are designed for low-temperature duty to -150° F, with a minimal Charpy value of 20-ft-lbs at this level. ASTM A320 Hex Bolts must be made of high temperature or high-pressure resistant steels that are corrosion-resistant. ASTM A320 Stud Bolts come in a variety of sizes and designs. Our top-grade ASTM A320 Grade L7 AS Bolts are in high demand in the industry due to their unique features and specifications.


ASTM A320 Grade L7 vs L7m

The ASTM A320 Grade L7m Material standard includes alloy steel and stainless steel bolting components for low-temperature applications. The ASTM A320 L7 Stud Bolts can also be utilised in settings where the ambient temperature might exceed -150oF. At this temperature, the Bolts and ASTM A320 Bolts have a minimum Charpy impact value of 15 ft-lb. ASTM A320 Grade L7m

Standard High Tensile A320 L7 Socket Head Screws protect fittings that have been rolled, forged, or strain hardened, such as bars, bolts, screws, studs, and studs bolts. These ASTM A320 Gr L7 Stud Bolts have been utilised in pressure vessel, valve, flange, and fitting applications. The 8UN thread series is defined on the A320 Gr L7 Material fastener, similar to the ASTM A193 standard, and is known to measure greater than 1" in diameter. The standard ASTM A320 Grade L7 Nuts alloy steel must be quenched and tempered following AISI 4140/4142.


ASTM A320 Grade L7 Stud Bolts vs Lug Bolt

The ASTM A320 L7 Bolt Material contains carbon, manganese, phosphorus, sulphur, silicon, 24% nickel, 13% chromium, molybdenum, titanium, and aluminium, vanadium, and boron. Because of their composition, the bolts have high mechanical and corrosion resistance capabilities. Class D has a minimum tensile strength of 895MPa and a minimum yield strength of 725MPa, whereas classes A, B, and C only have maximum yield strength of 585MPa.

All grades of ASTM SA320 L7 Stud Bolts have a 15% elongation. The material also has exceptionally high hardness ratings. The Brinell Hardness Number for class D ranges from 248 to 321, whereas the other classes go from 248 to 341. The bolts' strength, corrosion resistance, and temperature resistance make them suitable for applications.


ASTM A320 L7 Bolt Specification

Specification ASTM A320 Bolts
Head drive: Phillips/ Slot, Phillips, Six-Lobe, Slotted, etc
KM Steel Online Provide Options?: Yes
Head drive: Phillips/ Slot, Phillips, Six-Lobe, Slotted, etc
Drawing Formats: STP, IGS, JPEG, PDF, CAD
Delivery time: Regular export schedule is about 5-12 days
Free Samples: Yes
manufacturer Length 3 mm to 6"(inch)
Certifications: PED 97/23/EC Certified
Available Surface Finish: Zinc Plated and Hot Dip Galvanised
Port of Dispatch: Mumbai ports in Maharashtra state of India
manufacturer Of Bolts Threads: BSW, BSF, METRIC, UNC, UNF or as required
Test Certificate: EN 10204 / 3.1
Making Process: Surface Plating
Heat Treatment
Insert tapping
Cold Heading
Surface Coating Of Nuts: Phosphate Coating
Cadmium Coating
Teflon Coating
Xylon Coating
manufacturer Size M02 to M152.4

A320 L7M Stud Bolts Price List

Fasteners Types Size In MM Types Of Grade Price Per Kg In (INR) India
Stud Bolts 5/8 X 4.5 ASTM A320 L7M 300.00
- 7/8 X 5.5 - 280.00
- 7/8 X 5.75 - 278.00
- 1/2 X 3.25 - 315.00
- 1-3/8 X 9.25 - 270.00
Stud Bolts 1-1/8 X 8.25 ASTM A320 L7M 280.00

Types Of ASTM A320 Fasteners

Grade L7 Stainless Steel Stud Bolts

Grade L7 Stainless Steel Stud Bolts

ASME SA320 L7 Square Head T Bolt

ASME SA320 L7 Square Head T Bolt

AISI 4140 A320 L7 Flange Bolt

AISI 4140 A320 L7 Flange Bolt

 A320 Gr L7 Heavy Hex Nut

A320 Gr L7 Heavy Hex Nut

SA 320 L7 Locking Nuts

SA 320 L7 Locking Nuts

A320 Grade L7 Eye Nuts

A320 Grade L7 Eye Nuts

A320 Gr L7 Threaded Rod

A320 Gr L7 Threaded Rod

  SA320 Studs

SA320 Studs

 ASTM A320 Double End Studs

ASTM A320 Double End Studs

ASTM A320 Grade L7 Flat Washer

ASTM A320 Grade L7 Flat Washer

 A320 Gr B8 Class 1 Fender Washer

A320 Gr B8 Class 1 Fender Washer

ASME SA320 Split Lock Washer

ASME SA320 Split Lock Washer

ASTM A320 Gr L7 Hex Bolt

ASTM A320 Gr L7 Hex Bolt

A320 Gr L7 Carriage Bolt

A320 Gr L7 Carriage Bolt

A320 Grade L7 U Bolt

A320 Grade L7 U Bolt

A320 Socket Head Cap Screw

A320 Socket Head Cap Screw

 ASTM A320 Machine Screw

ASTM A320 Machine Screw

ASTM A320 Self Tapping Screw

ASTM A320 Self Tapping Screw



ASTM A320 Raw Material

ASTM A320 Raw Material


Check A320 L7 Bolt Torque Chart, Dimensions, Chemical Composition And Know More About SA 320 Gr L7 Hex Nuts, manufacturer of A307 Bolts In India



ASTM A320 Bolt Torque Chart

Diameter Of
Bolts
A320 Bolt Torque FT-LBS
30% Initial
Torque
70%
Torque
100% Final
Torque
1/2 16 36 52
9/16 23 53 75
5/8 31 73 104
3/4 55 129 184
7/8 71 166 237
1 107 249 356
1.1/8 127 297 424
1.1/4 179 417 596
1.3/8 186 435 622
1.1/2 246 574 821
1.9/16 168 392 560
1.5/8 191 445 636
1.3/4 240 561 801
1.7/8 298 696 994
2 366 853 1219
2.1/4 529 1234 1762
2.1/2 733 1709 2442
2.3/4 986 2300 3285
3 1289 3008 4297


An Indian Manufacturer but Global supplier, check what and where:

  • HABSHAN 5 IGD (GAS PROCESSING PLANT) UAE

    Habshan 5 Igd (Gas Processing Plant)-UAE

  • Kuwait National Petroleum Company (KNPC)-Kuwait

    Kuwait National Petroleum Company (KNPC)-Kuwait

  • Nigeria-Morocco Gas Pipeline South Africa

    Nigeria-Morocco Gas Pipeline South Africa

  • Malampaya Project Phase 3 Luzon, Philippines

    Malampaya Project Phase 3 Luzon, Philippines

ASTM A320 Bolt Dimensions

ASTM A320 Bolt Dimensions


Diameter Of Body (K) Normal (k) Maximum Min (S) Maximum (S) Minimum (E) Normal (E) Maximum Minimum Shank Maximum Shank Minimum Washer Maximum Washer Minimum
M1.6 1.1000 1.2250 0.9750 3.2000 3.0800 3.4100 3.7000 3.4800 1.6000 1.4600 - -
M2 1.4000 1.5250 1.2750 4.0000 3.8800 4.3200 4.6000 4.3800 2.0000 1.8600 - -
M2.5 1.7000 1.8250 1.5750 5.0000 4.8800 5.4500 5.8000 5.5100 2.5000 2.2300 - -
M3 2.0000 2.1250 1.8750 5.5000 5.3800 6.0100 6.4000 6.0800 3.0000 2.8600 5.0800 4.8300
M3.5 2.4000     6.0000   6.5800            
M4 2.8000 2.9250 2.6750 7.0000 6.8500 7.6600 8.1000 7.7400 4.0000 3.8200 6.5500 6.3000
M5 3.5000 3.6500 3.3500 8.0000 7.8500 8.7900 9.2000 8.8700 5.0000 4.8200 7.5500 7.3000
M6 4.0000 4.1500 3.8500 10.0000 9.7800 11.0500 11.5000 11.0500 6.0000 5.8200 9.4800 9.2300
M7 4.8000     11.0000   12.1200            
M8 5.3000 5.6500 5.3500 13.0000 12.7300 14.3800 15.0000 14.3800 8.0000 7.7800 12.4300 12.1800
M10 6.4000 7.1800 6.8200 17.0000 16.7300 18.9000 19.6000 18.9000 10.0000 9.7800 16.4300 16.1800
M12 7.5000 8.1800 7.8200 19.0000 18.6700 21.1000 21.9000 21.1000 12.0000 11.7300 18.3700 18.1200
M14 8.8000 9.1800 8.8200 22.0000 21.6700 24.4900 25.4000 24.4900 14.0000 13.7300 21.3700 21.1200
M16 10.0000 10.1800 9.8200 24.0000 23.6700 26.7500 27.7000 26.7500 16.0000 15.7300 23.2700 23.0200
M18 11.5000 12.2150 11.7850 27.0000 26.6700 30.1400 31.2000 30.1400 18.0000 17.7300 26.2700 26.0200
M20 12.5000 13.2150 12.7850 30.0000 29.6700 33.5300 34.6000 33.5300 20.0000 19.6700 29.2700 28.8000
M22 14.0000 14.2150 13.7850 32.0000 31.6100 35.7200 36.9000 35.7200 22.0000 21.6700 31.2100 30.7400
M24 15.0000 15.2150 14.7850 36.0000 35.3800 39.9800 41.6000 39.9800 24.0000 23.6700 34.9800 34.5100
M27 17.0000 17.2150 16.7850 41.0000 40.3800 45.2000 47.3000 45.6300 27.0000 26.6700 39.9800 39.3600
M30 18.7000 19.2600 18.7400 46.0000 45.3800 50.8500 53.1000 51.2800 30.0000 29.6700 44.9800 44.3600
M33 21.0000 21.2600 20.7400 50.0000 49.3800 55.3700 57.7000 55.8000 33.0000 32.6100 48.9800 48.3600
M36 22.5000 23.2600 22.7400 55.0000 54.2600 60.7900 63.5000 61.3100 36.0000 35.6100 53.8600 53.2400
M39 25.0000 25.2600 24.7400 60.0000 59.2600 66.4000 69.3000 66.9600 39.0000 38.6100 58.8600 58.2400
M42 26.0000 26.2600 25.7400 65.0000 64.2600 71.3000 75.1000 72.6100 42.0000 41.6100 63.7600 63.0400
M45 28.0000 28.2600 27.7400 70.0000 69.2600 76.9500 80.8000 78.2600 45.0000 44.6100 68.7600 68.0400
M48 30.0000 30.2600 29.7400 75.0000 74.2600 82.6000 86.6000 83.9100 48.0000 47.6100 73.7600 73.0400
M52 33.0000 33.2100 32.6900 80.0000 79.2600 88.3000 92.4000 89.5600 52.0000 51.5400 - -
M56 35.0000 35.3100 34.6900 85.0000 84.1300 93.6300 98.1000 95.0700 56.0000 55.5400 - -
M60 38.0000 38.3100 37.6900 90.0000 89.1300 99.3500 103.9000 100.7200 60.0000 59.5400 - -
M64 40.0000 40.3100 39.6900 95.0000 94.1300 104.9800 109.7000 106.3700 64.0000 63.5400 - -
M68 43.0000 43.3100 42.6900 100.0000 99.1300 110.5000 115.5000 112.0200 68.0000 67.5400 - -

ASTM A320 Chemical Composition

Chemical Element Grade L7 Grade L43 Grade B8 Grade B8M
Chromium 0.80 - 1.10% 0.70 - 0.90% 18.0 - 20.0% 16.0 - 18.0%
Nickel 1.65 - 2.00% 8.0 - 11.0% 10.0 - 14.0%
Molybdenum 0.15 - 0.25% 0.20 - 0.30% 2.00 - 3.00%
Sulfur, maximum 0.040% 0.040% 0.030% 0.030%
Silicon 0.15 - 0.35% 0.15 - 0.35% 1.00% maximum 1.00% maximum
Carbon 0.38 - 0.48% 0.38 - 0.43% 0.08% maximum 0.08% maximum
Manganese 0.75 - 1.00% 0.75 - 1.00% 2.00% maximum 2.00% maximum
Phosphorus, maximum 0.035% 0.035% 0.045% 0.045%


ASTM A320 Bolts Mechanical Properties

ASTM A320 Bolts Mechanical Properties


ASME SA320 L7m Stud Bolts Size Chart

ASME SA320 L7m Stud Bolts Size Chart


Equivalent Grades Of A320 Grade B8m Class 2 Stud Bolts

Equivalent Grades Of A320 Grade B8m Class 2 Stud Bolts


Difference Between A193 B7 Vs A320 L7

Grade Size Elong, %, minimum RA % minimum Tensile ksi, minimum Yield, ksi, minimum
A193 Grade B7 bolts Up to 2-1/2 16 50 125 105
ASTM A320 Bolts Up to 2-1/2 16 50 125 105


Buy ASTM A320 L7 Carbon Steel Washer At The Lowest Cost, Refer Online Grade L7 Threaded Rod Weight, Sizes



Dimensions Of SA320 L7 Double End Stud

D B C l<125 C l<125<200 C l 200>
M 3 7.5000 12.0000 18.0000
M 4 10.0000 14.0000 20.0000
M 5 12.5000 16.0000 22.0000
M 6 15.0000 18.0000 24.0000 37.0000
M 7 17.5000 20.0000 26.0000 39.0000
M 8 20.0000 22.0000 28.0000 41.0000
M 10 25.0000 26.0000 32.0000 45.0000
M 12 30.0000 30.0000 36.0000 49.0000
M 14 35.0000 34.0000 40.0000 53.0000
M 16 40.0000 38.0000 44.0000 57.0000
M 18 45.0000 42.0000 48.0000 61.0000
M 20 50.0000 46.0000 52.0000 65.0000
M 22 55.0000 50.0000 56.0000 69.0000
M 24 60.0000 54.0000 60.0000 73.0000
M 27 67.5000 60.0000 66.0000 79.0000
M 30 75.0000 66.0000 72.0000 85.0000
M 33 82.5000 72.0000 78.0000 91.0000
M 36 90.0000 78.0000 84.0000 97.0000


ASTM A320 L7 Hex Nut Dimensions

ASTM A320 L7 Hex Nut Dimensions

(D) (S) (E) (M)
M1.2 3.0000 3.2900 1.0000
M1.4 3.0000 3.2900 1.2000
M1.6 3.2000 3.4800 1.3000
M1.7 3.5000 3.8200 1.4000
M2 4.0000 4.3200 1.6000
M2.3 4.5000 4.9500 1.8000
M2.5 5.0000 5.4500 2.0000
M2.6 5.0000 5.5100 2.0000
M3 5.5000 6.0100 2.4000
M3.5 6.0000 6.0100 2.8000
M4 7.0000 7.6600 3.2000
M5 8.0000 8.7600 4.0000
M6 10.0000 11.0500 5.0000
M7 11.0000 12.1200 5.5000
M8 13.0000 14.3800 6.5000
M10 17.0000 18.9000 8.0000
M12 19.0000 21.1000 10.0000
M14 22.0000 24.4900 11.0000
M16 24.0000 26.7500 13.0000
M18 27.0000 29.5600 15.0000
M20 30.0000 32.9500 16.0000
M22 32.0000 35.0300 18.0000
M24 36.0000 39.5500 19.0000
M27 41.0000 45.2000 22.0000
M30 46.0000 50.8500 24.0000
M33 50.0000 55.3700 26.0000
M36 55.0000 60.7900 29.0000
M39 60.0000 66.4400 31.0000
M42 65.0000 71.3000 34.0000
M45 70.0000 76.9500 36.0000
M48 75.0000 82.6000 38.0000
M52 80.0000 88.2500 42.0000
M56 85.0000 95.0700 45.0000
M60 90.0000 100.7200 48.0000
M64 95.0000 106.3700 51.0000
M68 100.0000 112.0200 54.0000
M72 105.0000 117.6700 58.0000
M76 110.0000 123.3200 61.0000
M80 115.0000 128.9700 64.0000
M85 120.0000 133.1100 68.0000
M90 130.0000 145.7700 72.0000
M95 135.0000 151.4200 76.0000
M100 145.0000 162.7200 80.0000
M110 155.0000 174.0200 88.0000
M115 165.0000 185.3200 92.0000
M120 170.0000 190.9700 96.0000
M125 180.0000 202.2700 100.0000
M130 185.0000 207.7500 104.0000
M135 190.0000 213.4000 108.0000
M140 200.0000 224.7000 112.0000
M145 210.0000 236.0000 116.0000
M150 210.0000 236.0000 120.0000

Largest ASTM A320 Grade L7 Bolts And Nuts exporter In India, KM Steel Offer High Tensile A320 L7 Socket Head Cap Screws In Almost All Sizes


ASTM A320 Washer Dimensions

ASTM A320 Washer Dimensions

(D)  (D1)  (D2)  (H) 
M 1 1.1000 3.0000 0.3000
M 1.2 1.3000 3.5000 0.3000
M 1.4 1.5000 4.0000 0.3000
M 1.6 1.7000 4.0000 0.3000
M 1.7 1.8000 4.5000 0.3000
M 2 2.2000 5.0000 0.3000
M 2.3 2.5000 6.0000 0.5000
M 2.5 2.7000 6.0000 0.5000
M 2.6 2.8000 7.0000 0.5000
M 3 3.2000 7.0000 0.5000
M 3.5 3.7000 8.0000 0.5000
M 4 4.3000 9.0000 0.8000
M 5 5.3000 10.0000 1.0000
M 6 6.4000 12.0000 1.6000
M 7 7.4000 14.0000 1.6000
M 8 8.4000 16.0000 1.6000
M 10 10.5000 20.0000 2.0000
M 12 13.0000 24.0000 2.5000
M 14 15.0000 28.0000 2.5000
M 16 17.0000 30.0000 3.0000
M 18 19.0000 34.0000 3.0000
M 20 21.0000 37.0000 3.0000
M 22 23.0000 39.0000 3.0000
M 24 25.0000 44.0000 4.0000
M 27 28.0000 50.0000 4.0000
M 30 31.0000 56.0000 4.0000
M 33 34.0000 60.0000 5.0000
M 36 37.0000 6.0000 5.0000
M 39 40.0000 72.0000 6.0000
M 42 43.0000 78.0000 7.0000
M 45 46.0000 85.0000 7.0000
M 48 50.0000 92.0000 8.0000
M 52 54.0000 98.0000 8.0000
M 55 57.0000 105.0000 9.0000
M 56 58.0000 105.0000 9.0000
M 58 60.0000 110.0000 9.0000
M 60 62.0000 110.0000 9.0000
M 64 66.0000 115.0000 9.0000
M 68 70.0000 120.0000 10.0000
M 72 74.0000 125.0000 10.0000
M 76 78.0000 135.0000 10.0000
M 80 82.0000 140.0000 12.0000
M 85 87.0000 145.0000 12.0000
M 90 93.0000 160.0000 12.0000
M 95 98.0000 165.0000 12.0000
M 100 104.0000 175.0000 14.0000
M 105 109.0000 180.0000 14.0000
M 110 114.0000 185.0000 14.0000
M 115 119.0000 200.0000 14.0000
M 120 124.0000 210.0000 16.0000
M 125 129.0000 220.0000 16.0000
M 130 134.0000 230.0000 16.0000
M 135 139.0000 230.0000 16.0000
M 140 144.0000 240.0000 18.0000
M 145 149.0000 250.0000 18.0000
M 150 155.0000 250.0000 18.0000
M 160 165.0000 250.0000 18.0000

PTFE Coated ASTM A320 L7 Stud Bolts Torque (Cold Service)

Sizes Of
Bots
Torque FT-LBS
30% Initial
Torque
70%
Torque
100% Final
Torque
1/2 17 40 57
9/16 25 58 83
5/8 34 80 114
3/4 61 142 203
7/8 98 229 327
1 147 343 490
1.1/8 216 503 719
303 707 1011
1.3/8 411 959 1371
543 1267 1809
1.9/16 618 1441 2059
1.5/8 702 1637 2339
883 2060 2943
1.7/8 1096 2557 3653
2 1344 3135 4479
1943 4533 6476
2692 6282 8974


We Keep Bulk Stock Of A320 Grade L7 Anchor Bolts, Heavy Hex Nuts At Our Stockyard, Contact Us For SA 320 Gr L7 Stainless Steel Studs Free Sample & Stock List


ASTM A320 Bolts Hardness


Tensile Strength Brinell Hardness Approximate Rockwell Hardness B & C
minimum maximum
A, B and C 248 - 341 24 HRC 27 HRC
D 248 - 321 24 HRC 35 HRC


ASTM A320 Grade L7 Stud Bolts Stress Requirements


bolts Tensile Class Test Temperature °F [°C] Stress, minimum Time to Rupture, minimum, h [Note] Elongation, minimum, %
ksi Mpa
A, B and C 1200 [650] 56 385 100 5
D 1200 [650] 40 275 100 5


Global Client Reference list & delivery schedule of ASTM A320 Bolts


Location Days Clients
India 7
  • Indian oil corporation, India
  • L&T India
  • Essar India
  • BHEL India
  • NTPC India
  • WIPRO India
United Arab Emirates (UAE) 15
  • Hexa Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
  • Al Masaood Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
Australia 40
  • Scott Chemicals Australia Pty Ltd, 21/296 Bay Rd, Cheltenham VIC 3192, Australia
  • Wildcat Chemicals Australia, 15 Magnesium St, Narangba QLD 4504, Australia
  • Knight Equipment Australia PTY Ltd., Unit 3/1B Kleins Rd, Northmead NSW 2152, Australia
Kuwait 12
  • Kuwait National Petroleum Company, Hamad Al Zuwayer St, Ahmadi, Kuwait
  • Kuwait Oil Tanker Company, Kuwait
  • Kuwait Drilling Company, Kuwait City, Kuwait
Qatar 15
  • SPIE Oil & Gas Services Doha LLC (Qatar), Cat Building, Al Saad - 4th Floor، Doha, Qatar
  • Qatar Petroleum Oil Refinery, Mesaieed, Qatar