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ASTM A194 GR 6 Nuts

ASTM A194 GR 6 Nuts, ASTM A194 GR 6 Heavy Hex Nuts, GR 6 Nuts & GR 6 Nut Manufacturer and Supplier in Mumbai, India

Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of ASTM A194 GR 6 Nuts in Mumbai, India, supplying alloy steel nuts for pressure vessels, piping systems, valves, flanges and demanding industrial fastening assemblies. These nuts are intended for bolted connections where reliable strength, proper tightening and stable performance are required under pressure and elevated service conditions. We supply various sizes, thread configurations and surface finishes for standard and customized requirements.

ASTM A194 GR 6 Nuts are manufactured from suitable alloy steel and subjected to controlled processing and heat treatment to develop the mechanical properties required for demanding bolting applications. Their strong construction enables them to withstand tightening forces and operational loads when matched with compatible bolts or studs. This helps maintain a secure joint and consistent clamping force during service.

ASTM A194 GR 6 Nuts, ASTM A194 GR 6 Heavy Hex Nuts, GR 6 Nuts & GR 6 Nut Bolting Manufacturer and Supplier in Mumbai, India

These nuts are widely used in oil and gas installations, refineries, petrochemical plants, pressure vessels, power-generation equipment, process piping, valves, flanges and heavy engineering systems. Their mechanical strength makes them suitable for industrial fastening assemblies where dependable joint performance is essential.

ASTM A194 GR 6 Nuts are available in different dimensions, thread forms and finishes to accommodate various installation conditions. They are suitable for fabrication, maintenance, equipment assembly and industrial projects requiring durable alloy steel fastening components.

Get the Best Quote for ASTM A194 GR 6 Nuts. We Stock ASTM A194 GR 6 Nuts in Various Diameters, Thread Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.

ASTM A194 GR 6 Nuts Specification & Supply Parameters

Material Alloy Steel
Grade ASTM A194 Grade 6
Standard ASTM A194 / ASME SA194
Product Type Heavy Hex Nuts, Hex Nuts, Lock Nuts and Custom Nuts
Size Range 1/4″ to 4″ | M6 to M100 | Custom Sizes Available
Thread Standard UNC, UNF, UNEF, Metric and Custom Threads
Manufacturing Process Hot Forged, Cold Forged and Machined
Heat Treatment Quenched and Tempered
Finish Plain, Black Oxide, Zinc Plated, Hot-Dip Galvanized and Custom Finishes
Color Black / Dark Gray in Plain or Black Oxide Finish
Temperature Service Suitable for High-Temperature and High-Pressure Bolting Applications
Application Pressure Vessels, Piping Systems, Flanges, Valves, Oil & Gas, Petrochemical, Refineries, Power Generation and Chemical Processing Equipment

Chemical Composition for ASTM A194 GR 6 Nuts

Element ASTM A194 Grade 6 (%)
Carbon (C) 0.30 – 0.40
Manganese (Mn) 0.40 – 0.70
Silicon (Si) 0.20 – 0.35
Phosphorus (P) 0.035 max.
Sulfur (S) 0.040 max.
Chromium (Cr) 0.80 – 1.10
Molybdenum (Mo) 0.15 – 0.25

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Dimension Chart of ASTM A194 GR 6 Nuts

Nominal Nut Size Diameter (mm) Width Across Flats (mm) Width Across Corners (mm) Nut Thickness (mm)
1/4″ 6.35 11.11 12.83 5.56
5/16″ 7.94 12.70 14.66 7.14
3/8″ 9.53 14.29 16.51 8.73
1/2″ 12.70 19.05 22.00 11.11
5/8″ 15.88 23.81 27.51 13.89
3/4″ 19.05 28.58 33.02 16.26
7/8″ 22.23 33.34 38.49 19.05
1″ 25.40 38.10 43.99 22.23
1-1/8″ 28.58 42.86 49.48 24.61
1-1/4″ 31.75 47.63 54.99 27.78
1-3/8″ 34.93 52.39 60.48 30.16
1-1/2″ 38.10 57.15 66.05 33.34
1-5/8″ 41.28 61.91 71.50 36.51
1-3/4″ 44.45 66.68 76.99 39.69
1-7/8″ 47.63 71.44 82.49 42.86
2″ 50.80 76.20 87.99 46.04

Ready Stock of ASTM A194 GR 6 Nuts

ASTM A194 GR 6 Heavy Hex Nuts
ASTM A194 GR 6 Hex Nuts
ASTM A194 GR 6 Hex Jam Nuts
ASTM A194 GR 6 Heavy Hex Jam Nuts
ASTM A194 GR 6 Lock Nuts
ASTM A194 GR 6 Coupling Nuts
ASTM A194 GR 6 Flange Nuts
ASTM A194 GR 6 Plain Nuts
ASTM A194 GR 6 Structural Nuts
ASTM A194 GR 6 High-Strength Nuts
Stainless Steel ASTM A194 GR 6 Nuts
ASTM A194 GR 6 Finished Nuts

ASTM A194 GR 6 Nuts Application Industries

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

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