ASTM A320 Bolts and Nuts

ASTM A320 L7 Hexagon Nuts, ASTM A320 Self Locking Nut, ASTM A320 Square Nuts, ASTM A320 Hexagon Coupling Nuts, ASTM A320 Hexagon Nuts, ASTM A320 L7 Castle Nuts, ASTM A320 U- Bolts, ASTM A320 J Bolts, ASTM A320 L7 Mushroom Head Bolts, ASTM A320 Bolts, ASTM A320 Stud Bolts, ASTM A320 L7 Hex Head Bolts, Manufacturer & Supplier in India.

Ubique Alloys Pvt. Ltd is a distinguished manufacturer and supplier of ASTM A320 Bolts and Nuts, which is a low carbon corrosion resistant austenitic chromium-nickel-molybdenum steel. Machining ASTM A320 Hex Head Bolts requires low speeds and constant feeds to reduce its tendency to work harden. The low carbon in ASTM A320 Hex Head Nuts provides resistance to sensitization during welding and other thermal processes. Due to its low carbon content, ASTM A320 Square Bolts also provides resistance to sensitization when welded and higher creep, stress to rupture, and tensile strength at elevated temperatures. In addition to excellent corrosion resistance and strength properties, ASTM A320 Square Nuts provides the excellent fabricability and formability. ASTM A320 Eye Bolts has higher creep, stress-to-rupture and tensile strengths than other steels. For optimum corrosion resistance, a post-work annealing in ASTM A320 Eye Nuts is recommended. At temperatures under 100 Degree F (38 Degree C), they have excellent resistance to higher concentrations.

We specialize in supply of ASTM A320 T Bolts, along with equivalent fittings for manufacture of heat exchangers, piping systems, tanks and pressure vessels. ASTM A320 T Nuts can be used in applications where it is not possible to anneal after welding and where maximum corrosion resistance is required. The high corrosion resistance properties of ASTM A320 Lag Bolts make it suitable for highly corrosive acidic chloride environments such as in pulp and paper mills.

ASTM A320 Bolts and Nuts Specification

GradeASTM A320 : Grade L7, L7M, B8, B8M
DimensionsASME B18.2.1, B18.3
HeadHex, Square, Round, Hex flange, Flat, T-head & Triangular etc
Manufacturing ProcessWire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing
FormNuts, Bolts
TypesHexagon Nuts, Self Locking Nut, Square Nuts, Hexagon Coupling Nuts, Hexagon Castle Nuts, Hexagon Domed Cap Nuts, Hexagon Thin Nuts, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, Bolts, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, T-Head Bolts, Eye Bolt, Foundation Bolts, Structural Bolts etc
ASTM A320 L7 Nut, ASTM A320 L7 Hex Head Nut, ASTM A320 L7 T-Head Bolts, ASTM A320 Castle Nuts, ASTM A320 Threaded Stud Bolts, ASTM A320 Eye Bolts, ASTM A320 L7 Lock Nut, ASTM A320 L7 Square Nuts, ASTM A320 L7 J Bolts, ASTM A320 L7 U-Bolts, ASTM A320 L7 Seld Locking Nuts, ASTM A320 L7 Anchor Bolts Supplier & Exporter.

ASTM A320 Bolts and Nuts Property Class

For Bolts & ScrewsA2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H
For NutsA2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040
For SHCSF837B, F837C, F837E, F837
For Threaded RodsA2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2

ASTM A320 Bolts and Nuts Equivalent Grades

L7 AISI 4140/4142 Quenched and tempered
L7M AISI 4145 Quenched and tempered
L43 AISI 4340 Quenched and tempered
B8 Class 1 AISI 304, carbide solution treated
B8 Class 2 AISI 304, carbide solution treated, strain hardened
B8M Class 1 AISI 316, carbide solution treated
B8M Class 2 AISI 316, carbide solution treated, strain hardened

ASTM A320 Bolts and Nuts Chemical Composition

Element L7 (AISI 4140) L43 (AISI 4340) B8 (AISI 304) B8M (AISI 316)
Carbon 0.37 – 0.49% 0.38 – 0.43% 0.08% max 0.08% max
Manganese 0.65 – 1.10% 0.75 – 1.00% 2.00% max 2.00% max
Phosphorus, max 0.035% 0.035% 0.045% 0.045%
Sulfur, max 0.040% 0.040% 0.030% 0.030%
Silicon 0.15 – 0.35% 0.15 – 0.35% 1.00% max 1.00% max
Chromium 0.75 – 1.20% 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% 0.02 – 0.30%  
2.00 – 3.00%

ASTM A320 Bolts and Nuts Mechanical Properties

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min Charpy Impact
20-ft-lbf
@ temp
L7 Up to 2-1/2 125 105 16 50 -150° F
L43 Up to 4 125 105 16 50 -150° F
B8 Class 1 All 75 30 30 50 N/A
B8 Class 2 Up to 3/4 125 100 12 35 N/A
7/8 – 1 115 80 15 35 N/A
1-1/8 – 1-1/4 105 65 20 35 N/A
1-3/8 – 1-1/2 100 50 28 45 N/A
B8M Class 1 All 75 30 30 50 N/A
B8M Class 2 Up to 3/4 110 95 15 45 N/A
7/8 – 1 100 80 20 45 N/A
1-1/8 – 1-1/4 95 65 25 45 N/A
1-3/8 – 1-1/2 90 50 30 45 N/A

ASTM A320 Bolt Torque Chart

BOLT
DIA
Torque FT-LBS
30% Initial
Torque
70%
Torque
100% Final
Torque
1/2163652
9/16235375
5/83173104
3/455129184
7/871166237
1107249356
1.1/8127297424
1.1/4179417596
1.3/8186435622
1.1/2246574821
1.9/16168392560
1.5/8191445636
1.3/4240561801
1.7/8298696994
23668531219
2.1/452912341762
2.1/273317092442
2.3/498623003285
3128930084297
BOLT
DIA
Torque Nm
30% Initial
Torque
70%
Torque
100% Final
Torque
1/2 22 49 71
9/16 31 72 102
5/8 42 99 141
3/4 75 175 249
7/8 96 225 321
1 145 338 483
1.1/8 172 403 575
1.1/4 243 565 808
1.3/8 252 590 843
1.1/2 334 778 1113
1.9/16 228 531 759
1.5/8 259 603 862
1.3/4 325 761 1086
1.7/8 404 944 1348
2 496 1157 1653
2.1/4 717 1673 2389
2.1/2 994 2317 3311
2.3/4 1337 3118 4454
3 1748 4078 5826

ASTM A320 Bolts and Nuts Latest Edition

ASTM A320 Grade L7 Stud Bolt ASTM A320 L7M Stud Bolts
Stainless Steel B8 Threaded Rod ASTM A320 Stud Bolts Supplier
SA320 Nuts Exporter ASTM A320 B8 Stud Bolt
ASTM A320 L7M Tie Rod A320 L7M Nuts Manufacturer
A320 L7M Stainless Steel bolts ASTM A320 Stud Bolts
ASTM A320 L7 Lag Bolt Exporter ASME SA320 L7M Grub Screw
ASTM A320 Anchor Bolt A320 L7M Shoulder Bolt
ASTM A 320 L7 Heavy Hex Bolts A320 L7 Hex Nut
ASTM A 320 Eye Bolt Supplier SS B8 Plow Bolt Distributor
A320 L7 Hex Nut Supplier L7M Hanger Bolt
SS B8 Step Bolt ASTM A 320 L7 Studs Manufacturer
ISO Approved ASTM A320 U Bolts ASTM A320 J Bolt

Other Types of ASTM A320 Bolts and Nuts

SS ASTM A320 L7 Hexagon Domed Cap Nuts ASTM A320 Mushroom Head Square Neck Bolts ASTM A320 L7 Eye Bolts
ASTM A320 L7 Self Locking Nut ASTM A320 L7 Finishing Washers ASTM A320 L7 Structural Bolts
ASTM A320 Castle Nuts ASTM A320 Long Bolts ASTM A320 Hexagon Coupling Nuts
SS ASTM A320 L7 U Bolts SS ASTM A320 T-Bolts ASTM A320 Thread Nylon Nuts
SS ASTM A320 J Bolts ASTM A320 Steel Hex Nuts ASTM A320 Heavy Hex Nuts
ASTM A320 Step Bolt ASTM A320 eversible Locknuts ASTM A320 L7 Anchor Bolts
A320 ASTM L7 Elevator Bolts A320 Gr L7 Heavy Hex Bolts ASTM A320 L7 Countersunk Bolts
ASTM A320 Threaded Stud Bolts ASTM A320 L7 Carriage Bolts ASTM A320 Double Ended Studs
ASTM A320 T-Head Bolts ASTM A320 L7 Structural Bolts ASTM A320 Lag Bolt
ASTM A320 Stainless Steel Bolt ASTM A320 Grub Screw ASTM A320 Machine Bolt

Countries We Export to

Ubique Alloys Pvt. Ltd. manufactures and exports ​to various countries such as Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Netherlands, Brazil, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Spain, France, United Kingdom, Indonesia, Israel, Iran, Russia, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia

Cities We Deliver to

Ubique Alloys Pvt. Ltd. manufactures and exports to multiple cities such as Mumbai, Thane, Navi Mumbai, Pune, Pimpri-Chinchwad, Vadodara, Kolkata, Gurgaon, Ahmedabad, Seoul, Hyderabad, Singapore, Abu Dhabi, Tehran, Calgary, Noida, Riyadh, London, Coimbatore, Jakarta, Istanbul, Bangkok, Kuwait City, Sharjah, Muscat, Edmonton, Busan, Mexico City, Doha, New Delhi, Bengaluru, Chennai, Surat, Bhopal, Ulsan, Faridabad, Houston, Dubai, Jeddah, Aberdeen, Cairo, Geoje-si, Perth, Santiago, Chandigarh, Indore, Kuala Lumpur, Rio de Janeiro, Dammam, Melbourne, Madrid, La Victoria, Bogota, Lahore, Los Angeles, Algiers, Chiyoda, Ankara, Ho Chi Minh City, Toronto, Hong Kong, Howrah, Sydney, Ahvaz, Karachi, Rajkot, Brisbane, Petaling Jaya, Ernakulam, Secunderabad, Gimhae-si, Al Jubail, Port-of-Spain, Thiruvananthapuram, Milan, Atyrau, Lagos, Hanoi, New York, Caracas, Vung Tau, Al Khobar, Manama, Montreal, Granada, Courbevoie, Visakhapatnam, Ludhiana, Moscow, Dallas, Haryana, Colombo

Stainless Steel Fasteners

Fasteners

Our Products

Download Brodhure

Do you have any questions?

Contact us at the office nearest to you or submit a business inquiry online
× How can I help you?