ASTM A320 Grade L7 Bolts

ASTM A320 Grade L7 Socket Head Cap Bolts, ASTM A320 Grade L7 U-Bolts Dealer in Mumbai, ASTM A320 Grade L7 Heavy Hex Bolts Supplier, ASTM A320 Grade L7 60000 PSI Tensile Strength Bolts Exporter, ASTM A320 Grade L7 Bolts Manufacturer in India.

Boltport Fasteners trades a wide range of ASTM A320 Grade L7 Bolts, which are widely used in high end industrial and engineering projects. ASTM A320 Grade L7 Stainless Steel Bolts offer features like Trouble free performance, Precisely-designed, Enhanced service life, Robustness, Accurate size, Corrosion proof, etc. Different in sizes and patterns our premium quality ASTM A320 Grade L7 AS Bolts is greatly demanded in the market for their speculative features & specifications. We also have a team of quality testers who constantly check the quality of our range of ASTM A320 Grade L7 AS Bolts on various parameters to offer defect free range to our clients.

ASTM A320 Grade L7 Bolts

ASTM A320 Grade L7 Alloy Steel Shoulder Bolts

ASTM A320 Grade L7 Alloy Steel Shoulder Bolts

ASTM A320 Grade L7 Elevator Bolts

ASTM A320 Grade L7 Elevator Bolts

ASTM A320 Grade L7 AS Anchor Bolt

ASTM A320 Grade L7 AS Anchor Bolt

ASTM A320 Grade L7 Alloy Steel Square Bolts

ASTM A320 Grade L7 Alloy Steel Square Bolts

ASTM A320 Grade L7 Lag Bolts

ASTM A320 Grade L7 Lag Bolts

ASTM A320 Grade L7 Alloy Steel Flange Bolts

ASTM A320 Grade L7 Alloy Steel Bolts

ASTM A320 Grade L7 AS Heavy Hex Bolts

ASTM A320 Grade L7 AS Heavy Hex Bolts

ASTM A320 Grade L7 Carriage Bolts

ASTM A320 Grade L7 Carriage Bolts

ASTM A320 Grade L7 Alloy Steel Eye Bolts

ASTM A320 Grade L7 Alloy Steel Eye Bolts

ASTM A320 Grade L7 AS Structural Bolts

ASTM A320 Grade L7 AS Structural Bolts

ASTM A320 Grade L7 U-Bolts

ASTM A320 Grade L7 U-Bolts

ASTM A320 Grade L7 AS J-Bolts

ASTM A320 Grade L7 AS J-Bolts

ASTM A320 Grade L7 Bolts Specifications

Thread Diameters : M6 to M36
Threads Configuration : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service : The ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwise specified, the 8UN thread series is specified on fastener larger than 1” in diameter.

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 0.04% 0.04% 0.05% 0.05%
Sulfur, max 0.04% 0.04% 0.03% 0.03%
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% 0.20 – 0.30% 2.00 – 3.00%

Grade Size Tensile, ksi min Yield, ksi, min Charpy Impact Elong, % min RA, %, min
L7 up to 21/2 125 105 -150° F 16 50
L43 sup a 4 125 105 -150° F 16 50
B8 Class 1 all 75 30 N/A 30 50
B8M Class 1 all 75 30 N/A 30 50
B8 Class 2 Up to 3/4 125 100 N/A 12 35
7/8 – 1 115 80 N/A 15 35
11/8 – 11/4 105 65 N/A 20 35
13/8 – 11/2 100 50 N/A 28 45
B8M Class 2 Up to 3/4 110 95 N/A 15 45
7/8 – 1 100 80 N/A 20 45
11/8 – 11/4 95 65 N/A 25 45
13/8 – 11/2 90 50 N/A    

ASTM A320 Grade L7 Heavy Hex Bolts Manufacturer, ASTM A320 Grade L7 Alloy Steel Bolts Exporter, ASTM A320 Hex Bolts, ASTM A320 Grade L7 Structural Bolts Dealer in Mumbai, A320 Grade L7 Bolts Manufacturer in Mumbai.


ASTM A320 Grade L7 Alloy Steel Bolts are developed with the use of hi-tech machines and instruments at the sound manufacturing unit. ASTM A320 Grade L7 Alloy Steel Bolts is a solid solution alloy that can only be hardened by cold working, where quality is the most important parameter for customer satisfaction. ASTM A320 Grade L7 AS Bolts is often used in chemical processing, transport and storage – tanks, piping, pressure vessels, and heat exchangers. Financial stability, credibility, goodwill and reputation are some of the key parameters that our quality controllers appoint our manufacturing staff for ASTM A320 Grade L7 SS Bolts. Adding lead to the brasses in amounts of 0.5 % to 4 % over ASTM A320 Grade L7 AS Bolts, results in free cutting of free-machining alloys in which the elemental lead is present as uniformly dispersed particles.


ASTM A320 Grade L7olt Application Industry

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