ASTM A320 Gr. L7 Alloy Steel Fasteners Manufacturer & Supplier

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ASTM A320 Alloy Steel Gr. L7 Fasteners

India’s Leading ASTM A320 Alloy Steel Gr. L7 Fasteners, Grade L7 Marine Anchors, Gr. L7 Hex Head Screw, Alloy Grade L7 Threaded Stud Manufacturer & Supplier in India.

Suppliers and Manufacturer of Alloy Steel ASTM A320 L7 Fasteners, which has technically best including drawing and trouble-unfastened welding. Alloy Steel ASME SA 320 L7 Nuts has a few exceptional functions to provide including long lasting floor finish, advanced electricity, corrosion resistant and more. The hardenability of fasteners may be minimized by means of the aid of using steady nice feeds and sluggish speeds. Our ASTM A320 GR.L7 Fasteners are produced specifically for raised temperature utilization. We offer these Alloy Steel ASTM A320 Grade L7 Nuts at highly competitive prices and deliver consignment within stipulated time. The ASTM A320 Grade L7 Fasteners have characteristics that are similar to the stainless steel types such as both the austenitic along with the ferritic. ASTM A320 GRADE L7 Steel Fasteners suppliers in Aerospace, Engine & Turbine Engineering. It is the grade of desire for programs within the temperature variety of as much as approximately 900 Degree C, combining excessive electricity, resistance to scaling and segment balance over in company of resistance to next aqueous corrosion.

It is high-quality for excessive temperature provider due to its suitable mechanical properties. Alloy Steel ASTM A320 L7 Bolts are categorized into martensitic, austenitic, and ferrite steels primarily based totally on their crystalline structure. We supply custom ASTM A320 GRADE L7 Steel Fasteners created with ASTM A320 GRADE L7 Steel in precise time. Therefore, these ASTM A320 Grade L7 Fasteners are used in a large variety of applications where the temperature could not be favorable Alloy Steel ASTM A320 Grade L7 Bolts is not recommended for concentrated nitric acid purposes or highly oxydizing nitric acid solutions. These A320 Gr.L7 Fasteners are durable even at cryogenic temperatures. Alloy Steel ASME SA 320 L7 Washers higher basic corrosion resistant properties, especially better resistance to pitting and crevice corrosion in chloride environments. Typical Applications is utilized in fluidised mattress combustors, kilns, radiant tubes, tube hangers for petroleum refining and steam boilers, coal gasifier inner components, lead pots, and more.

Largest Manufacturer & Supplier of Alloy Steel Gr. L7 Industrial Fasteners, ASME SA320 Alloy Steel Gr. L7 Lock Nut, Grade L7 Alloy Eye Bolts, Alloy Steel A320 Gr. L7 Lock Nut in Mumbai, India.

Alloy Steel Gr. L7 Fasteners Raw Material

Grade Raw Material Description
ASTM A320 L7 Alloy steel, Chromium Molybdenum Alloy Steel, Quenched & Tempered

ASTM A320 Grade L7 Fasteners Chemical Composition

Elements Content, % Allowable Variation, Over or Under, %
Carbon 0.08 max 0.01 over
Manganese 2.00 max 0.04
Phosphorus 0.04 max 0.005 over
Sulfur 0.03 max 0.005 over
Silicon 1.00 max 0.05
Nickel 24.00 – 27.00 0.20
Chromium 13.50 – 16.00 0.20
Molybdenum 1.00 – 1.50 0.05
Titanium 1.90 – 2.35 0.05
Aluminum 0.35 max 0.05 over
Vanadium 0.10 – 0.50 0.03
Boron 0.001 – 0.010 0.0004 under to 0.001 over

ASTM A320 Grade L7 Fasteners Mechanical Properties

Tensile Class Tensile Strength, min Yield strength, 0.2% offset, min Elongation in 4D min, % Reduction of Area, min, %
ksi MPa ksi MPa
A, B and C 130 895 85 585 15 18
D 130 895 105 725 15 18

ASTM A320 Grade L7 Fasteners Hardness

Tensile Class Brinell Hardness Number Approximate Rockwell Hardness B & C
min max
A, B and C 248 – 341 24 HRC 27 HRC
D 248 – 321 24 HRC 35 HRC

ASTM A320 Grade L7 Fasteners Stress Rupture Requirements

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

Specification Of Alloy Steel Gr. L7 Fasteners

Material Alloy Steel Gr. L7 Alloy Fasteners
Alloy Steel Gr. L7 Fasteners ASTM A320 /
ASME SA320,
ASTM A194 /
ASME SA194
Size of Alloy Steel Gr. L7 Fasteners M02 to M160
Length of ASTM A320 Alloy Steel Gr. L7 Fasteners 3 mm to 200 mm
ASTM A320 Alloy Steel Gr. L7 Fasteners Threads: BSW, UNC, BSF, UNF METRIC, or as required
M3, M14, M2.5, M2, M12, M5, M6, M4, M20, M16, M30, M24, M36, M8, M10 etc.
ASME SA320 Alloy Steel Gr. L7 Fasteners Standard: JIS, ASTM,BS, GB, DIN, IS, ISO
ANSI – American National Standards Institute

  • ASME B18.5
  • ANSI B 28.2.4 1M
  • Stud Bolt length are defined in ASME B16.5 standard
  • ANSI B 18.2.4 2M
  • Hex nuts are defined in ASME B18.2.2

DIN: DIN 931, DIN 970, 934 DIN DIN 933

UTS – Unified Thread Standard : NPTF, UNS, NPT, UNF, UNC, UNEF ISO – International Organization for Standardization : ISO 4033 ,ISO 4032, JIS standards

Widely Use Alloy Steel Gr. L7 Bolts Types Alloy Steel Gr. L7 Hex Bolt, Square Bolt, Countersunk Bolt, Hex Head Bolt,T Bolt, U Bolt, Eye Bolt, Lag Bolt etc.
Widely Use Alloy Steel Gr. L7 Nut Types Alloy Steel Gr. L7 Hex Head Nut, Lock Nut Coupling Nut, Square Nut, Wing Nut, Panel Nut, Acorn Nuts, T Nut, Dome Nut, Eye Nut etc.
Widely Use Alloy Steel Gr. L7 Screw Types Alloy Steel Gr. L7 Socket Head Screw, Threaded Screw, Socket Set Screw, Blind Rivet, Concrete Screw, Shoulder Screw, Anchor Screw, Panel Screw, Machine Screw, Hex Head Screw etc.
Widely Use Alloy Steel Gr. L7 Washer Types Alloy Steel Gr. L7 Machine Washers, Lock Washer, Sealing Washer, Star Washers, Split Washer etc.
Widely Use Alloy Steel Gr. L7 Studs Types Alloy Steel Gr. L7 Threaded Rod, Tie Rods, Double Ended Studs, Tie Bars etc.
Scope of Manufacture
  • CNC Machined , Nut / Bolt; up to M100 / 4” Dia, up to 1500mm lg
  • Hot Forged , Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm lg
  • ASME B18.16.6 Prevailing Torque Locknuts, ASME B18.13 Screw and Washer, ASME B18.18 Fasteners
  • Alloy Steel Gr. L7 Fasteners Standard : ANSI / ASME B18.2.1, B18.3, B18.6.3, B18.6.7M, B1.1, B16.47, B18.2.2, B18.22.1
Alloy Steel Gr. L7 Fasteners In Form of: Square, Round, Threading as per Gauge,Round Etc.
Test Certificate of Alloy Steel Gr. L7 Bolts : EN 10204 / 3.1
Finishing of Alloy Steel Gr. L7 Fasteners: Zinc (yellow, white, blue, black), black oxide,
Dacroment, Geometry, nickel plated, anodizing, plated zinc-nickel, Stainless steel: Passivated
Bright Zinc Plated (BZP), Self-Colour, Hot Dip Galvanised (HDG), Stainless Steel, Sherardized,Mechanically Applied coating and some special one like DACROMET
Alloy Steel Gr. L7 Fasteners Production process hot forging M24-M100, M2-M24: Cold Forging
for Customized connecting element machining and CNC
Alloy Steel Gr. L7 bolts Head drive: Six-Lobe, Phillips/Slot, Slotted, Phillips etc
Origin and service-region: European
Origin of are Western European. However projects with eastern origin are possible on request.
Surface Coating of Alloy Steel Gr. L7 Fasteners materials:
  • Xylon Fasteners
  • Cadmium Fasteners
  • Teflon Fasteners
  • Hot Dipped Galvanizing Fasteners
  • Phosphate Fasteners
  • Zinc Fasteners
  • Ptfe Coated Fasteners
  • All surface finishes can be supplied, including Nickel, Geomet , Zinc, Dacromet, Galvanised, Electroless Sherardized,& PTFE.
Top Manufacturers of Fasteners SPAX® Screws, EBY Fastener, Sundaram Kundan, GKW, Infasco, Precision, APL, Unbrako,Etc.
Packing of Alloy Steel Gr. L7 Fasteners: In Bulk: pallet, Canton, Small Carton / Box / Pallet, or customer request
Specialized manufacturer of Alloy Steel Gr. L7 High Tensile Fasteners, Bolts
Alloy Steel Gr. L7 Fasteners Test Certificates
  • Third Party Inspection Report, etc
  • Raw Materials Certificate
  • EN 10204/3.1B
  • 100% Radiography Test Report

ASTM A320 Alloy Steel Gr. L7 Fasteners Available Stock

Products Size
ASTM A320 Alloy Steel Gr. L7 Stud Bolt ASTM A320 Alloy Steel Gr. L7 Bolts Sizes M3 – M56 | 3/6″ to 2″
ASTM A320 Alloy Steel Gr. L7 Cap Screw ASTM A320 Alloy Steel Gr. L7 Foundation Bolts
ASTM A320 Alloy Steel Gr. L7 Welding Studs ASTM A320 Alloy Steel Gr. L7 Pan Head Screw
ASTM A320 Alloy Steel Gr. L7 Fender Washer ASTM A320 Alloy Steel Gr. L7 Lock Nut
ASTM A320 Alloy Steel Gr. L7 Countersunk Slotted Screw ASTM A320 Alloy Steel Gr. L7 Double Ended Stud
ASTM A320 Alloy Steel Gr. L7 Punched Washer ASTM A320 Alloy Steel Gr. L7 Pan Head Screw
ASTM A320 Alloy Steel Gr. L7 Square Nut ASTM A320 Alloy Steel Gr. L7 Insert Nuts
ASTM A320 Alloy Steel Gr. L7 Threaded Rod ASTM A320 Alloy Steel Gr. L7 Hex Head Bolts
ASTM A320 Alloy Steel Gr. L7 Nuts ASTM A320 Alloy Steel Gr. L7 Washers

Alloy Steel Gr. L7 Fasteners Inventory

Hexagon Bolt / Set Screws Stud Bolt Hexagon Nuts Socket Cap screws
DIN 931 BS4882 DIN 934 DIN 912
DIN 933 DIN 976 BS 1768 DIN 6912
BS 1768 BS 1769 DIN 7984
UNI 5731 BS 1083 ANSI B18.3
UNI 5739 BS 3692 ISO 4762
ISO 4014 ISO 4032 UNI 5931
ISO 4017 ISO 4033 BS 2470
BS 1769 ANSI B18.2.2 BS 4168
BS 3692
ANSI B18.2.1
Socket & Slotted Set Screws Socket & Slotted Countersunk Screws Studs Washers
DIN 913 DIN 963 DIN 938 DIN 125
DIN 914 DIN 7991 DIN 939 DIN 9021
DIN 915 BS 4168 DIN 2510 BS 4320
DIN 916 BS 1981 BS 4439 BS 3410
DIN 551 BS 483 BS 2693
DIN 553 BS 2470 Spring Washers
DIN 438 DIN 127
BS 4168 BS 4464
BS 1802

Alloy Steel Gr. L7 Types of Fasteners We Supply

Alloy Steel Gr. L7 Fasteners Supplier ASTM A320 Gr. L7 Fasteners Stockist
ANSI B18.2 Alloy Steel Gr. L7 Carriage Bolt Gr. L7 Alloy Steel Flange Bolt
Alloy Steel Gr. L7 Flat Washers ASME SA320 Gr. L7 Machine Fasteners Dealer
ASTM A320 Alloy Steel Gr. L7 Bolted Joints Alloy Steel Gr. L7 Fasteners Supplier in Mumbai