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ASTM A194 GR 4 Nuts

ASTM A194 GR 4 Nuts, ASTM A194 GR 4 Heavy Hex Nuts, GR 4 Nuts & GR 4 Nut Manufacturer and Supplier in Mumbai, India

Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of ASTM A194 GR 4 Nuts in Mumbai, India, supplying alloy steel nuts for pressure equipment, piping systems, valves, flanges and industrial bolting assemblies. These nuts are intended for fastening applications where dependable strength, secure tightening and reliable performance under demanding service conditions are required. We supply different sizes, thread configurations and finishes for standard as well as customized requirements.

ASTM A194 GR 4 Nuts are manufactured from suitable alloy steel and processed to achieve the mechanical properties required for pressure and mechanical bolting applications. Their robust construction allows the nuts to withstand substantial tightening forces and service loads when used with compatible high-strength bolts or studs. They are suitable for bolted joints where consistent clamping force and dependable connection performance are important.

ASTM A194 GR 4 Nuts, ASTM A194 GR 4 Heavy Hex Nuts, GR 4 Nuts & GR 4 Nut Bolting Manufacturer and Supplier in Mumbai, India

These nuts are commonly used in oil and gas facilities, refineries, petrochemical plants, power-generation equipment, pressure vessels, industrial piping, valves, flanged connections and heavy engineering applications. Their strength characteristics make them suitable for demanding fastening assemblies where reliable joint performance is required.

ASTM A194 GR 4 Nuts are available in various dimensions, thread forms and surface finishes to suit different installation requirements. They can be used for fabrication, maintenance, equipment assembly and industrial projects requiring strong and dependable alloy steel fastening components.

Get the Best Quote for ASTM A194 GR 4 Nuts. We Stock ASTM A194 GR 4 Nuts in Various Diameters, Thread Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.

ASTM A194 GR 4 Nuts Specifications

Specifications
Standard : ASTM / ASME, A194 / SA194
Dimension : ASTM,DIN, BS,GB, IS and all International Standards
Length : 3 mm to 200 mm
Nut Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Heat Treatment : Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.
Finish : Plain / Zinc plated / Hot dip galvanised.
Type : Hex Nut, Heavy Hex Nut, Lock Nut, Nylock Nut, Weld Nut, Dome Nut, Flange Nut, Square Nut, Eye Nut etc.

Chemical Composition for ASTM A194 GR 4 Nuts

Property Class Grade 4
Carbon (C) 0.40 – 0.50
Manganese (Mn) 0.70 – 0.90
Silicon (Si) 0.15 – 0.35
Phosphorus (P) 0.035 max.
Sulfur (S) 0.040 max.
Chromium (Cr) –
Nickel (Ni) –
Molybdenum (Mo) 0.20 – 0.30
Vanadium (V) –
Titanium (Ti) –

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Mechanical Properties of ASTM A194 GR 4 Nuts

Mechanical Properties

Class

Diameter, [mm]

Brinell

Hardness

Rockwell Hardness

C Scale

B Scale

4

All

248-327

24-35

–

Ready Stock of ASTM A194 GR 4 Nuts

ASTM A194 GR 4 Heavy Hex Nuts
ASTM A194 GR 4 Hex Nuts
ASTM A194 GR 4 Hex Jam Nuts
ASTM A194 GR 4 Heavy Hex Jam Nuts
ASTM A194 GR 4 Lock Nuts
ASTM A194 GR 4 Coupling Nuts
ASTM A194 GR 4 Flange Nuts
ASTM A194 GR 4 Plain Nuts
ASTM A194 GR 4 Structural Nuts
ASTM A194 GR 4 High-Strength Nuts
Stainless Steel ASTM A194 GR 4 Nuts
ASTM A194 GR 4 Finished Nuts

ASTM A194 GR 4 Nuts Application Industries

Refineries
90%
Oil and Gas Industry
96%
Power Generation
80%
Pharmaceutical Equipment
85%
Pulp & Paper Industry
88%

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