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Stainless Steel Square Nut | Alloy Steel Square Nut | Duplex Steel Square Nut | Carbon Steel Square Nut

Square Nut

We manufacturer fasteners with size range from M10 to M100  Hex Nuts, Heavy Hex Nut, Cap Nut, Acorn Nut, Serrated Flange Nut, Coupling Nut, Square Nut, Castle Nut, Wing Nut, Flange Lock Nut, Flex Lock Nut, High Nut, Kep Nut, Jam Nut, Nylon Lock Nut, Slotted Nut, Reversible Lock Nut, Custom Nut, T Nuts & other customized Nuts as per Client's requirement.We produce Hot Forged and Coled Formed Nuts Fasteners.

A square nut is a four-sided nut. Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening)[citation needed]. They are also much less likely to become rounded-off after repeated loosening/tightening cycles. Square nuts are typically mated with square-headed bolts. Square nuts are used along with flat washers in order to avoid damage from its sharp edges and helps to increase the strength of the fastener.

Square nuts are typically used in conjunction with square bolts or are commonly used with pole line hardware. Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized hex square nuts are tapped oversize to compensate for the corrosion resistant coating on the bolts.


Diameters: 1/2″ – 1″
Origin: Import
Finish: Black and hot-dip galvanized


Nominal Size F C H Part Numbers
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min Black Galvanized

Dimensions per ASME B18.2.2 1987 (1999)

Nut Type

Hex NutsHeavy Hex NutCap NutAcorn NutSerrated Flange Nut
Coupling NutSquare NutCastle NutWing NutFlange Lock Nut
Flex Lock NutHigh NutKep NutJam NutNylon Lock Nut
Slotted NutReversible Lock NutCustom NutT Nuts 


Square Nut Application Industries

Sunflex Metal Industries are engaged in manufacturing of robust quality of Square Nut. These Square Nut are widely used in the following industries:

Square Nut Mining Industries
Square Nut Transport Industries- Rail and Road
Square Nut Construction Industries / Building Systems
Square Nut Manufacturing Industries
Square Nut Agriculture Industries
Square Nut Energy Industries
Square Nut Water Industries
Square Nut Automotive Industries
Square Nut Ship Building Industries
Square Nut Nuclear Power Plant
Square Nut Paper & Pulp Industries
Square Nut Sugar Industries
Square Nut Engineering Cement Industries
Square Nut Petro-Chemical Industries
Square Nut Food Industries
Square Nut Oil & Gas Industries
Square Nut Chemical & Pharmaceutical Industries

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