Square Nuts

Manufacturer, Exporter & Supplier of Square Nuts

Square Nuts

Introducing the largest manufacturer of premium square nuts that meet worldwide standards such as DIN, ASTM, ISO, and BS is GIC Fasteners. Our carefully thought-out square nuts are made to withstand harsh conditions and are intended for a wide range of uses. Here at GIC Fasteners, we take great satisfaction in offering outstanding fastening solutions that meet international standards and provide you the assurance and functionality you need for your projects. Experience the superior quality of square nuts from GIC Fasteners, your reliable industrial fastening partner.

GIC Fasteners is a well-known and reliable brand in the market, known for producing square nuts of superior quality that adhere to exacting requirements of precision and durability. Our square nuts are designed to offer strong fastening options for a range of uses, including structural assembly and heavy machines. These nuts, which are made with great care and attention to detail, guarantee a tight fit and dependable operation in even the most demanding settings. At GIC Fasteners, we place a great value on consistency and quality, making sure that every product we provide satisfies the strictest requirements for perfection.

Take advantage of the exceptional performance of square nuts from GIC Fasteners and increase the dependability of your projects. Our committed team of professionals is always available to help you choose the ideal fastening options that are customized to meet your unique requirements. Don’t skimp on quality; rely on GIC Fasteners for goods that consistently produce outstanding outcomes. Send us an email at sales@gicfasteners.com to make an order or for further information. With our superior square nuts, let us be your successful partner.

Square Nuts Specifications​

Standard : DIN, ASTM, BS, ISO, JIS, IS, GB, IS 4190 and all other International Standards
Length : 3 mm to 200 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Threads: : BSF, UNF METRIC, UNC, BSW or as required
Finish : Plain, black, zinc plated (Cr,3+), zinc plated(Cr,6+), hot dipped galvanized, dacromet, nickel plated, cadmium plated, etc.
Forming : Hot & Cold Forged
Variants : Fully Threaded Square Nuts, Partial Threaded Square Nuts, Metric Square Nuts, Imperial Square Nuts
Coatings : PTFE (Teflon), Hot Dip Galvanizing, Aluminum Zinc Flake, Zinc Phosphating, Manganese Phosphating, Metallic Zinc, Nickel Bolts Plating, Chrome Plating, Cadmium Plating, Silver Plating, Tin Plating

Dimensions For Machine Screw Square Nut

Width Thickness
#0 0.0600 5/32 7/32 3/64
#1 0.0730 5/32 7/32 3/64
#2 0.0860 3/16 1/4 1/16
#3 0.0990 3/16 1/4 1/16
#4 0.1120 1/4 11/32 3/32
#5 0.1250 5/16 27/64 7/64
#6 0.1380 5/16 27/64 7/64
#8 0.1640 11/32 15/32 1/8
#10 0.1900 3/8 33/64 1/8
#12 0.2160 7/16 19/32 5/32
1/4 0.2500 7/16 19/32 3/16
5/16 0.3125 9/16 49/64 7/32
3/8 0.3750 5/8 55/64 1/4
This table lists the dimensions of machine screw square nuts, including nominal size presented as a number/fraction and in decimal inches. The width across flats represents the basic width, while the width across corners and thickness are calculated averages rounded to the nearest 64th of an inch.

Dimensions For Regular Square Nut

Width Thickness
1/4 7/16 19/32 7/32
5/16 9/16 49/64 17/64
3/8 5/8 27/32 21/64
7/16 3/4 1 1/64 3/8
1/2 13/16 1 3/32 7/16
5/8 1 1 23/64 35/64
3/4 1 1/8 1 17/32 21/32
7/8 1 5/16 1 25/32 49/64
1 1 1/2 2 3/64 7/8
1 1/8 1 11/16 2 19/64 1
1 1/4 1 7/8 2 9/16 1 3/32
1 3/8 2 1/16 2 13/16 1 13/64
1 1/2 2 1/4 3 1/16 1 5/16
This table displays the dimensions of regular square nuts, including nominal size, width, and thickness in inches. The width across flats denotes the basic width, while the width across corners and thickness are calculated averages rounded to the nearest 64th of an inch.

Stainless Steel Square Nuts - Grades

  • Stainless Steel 304 Square Nuts
  • Stainless Steel 304L Square Nuts
  • Stainless Steel 304H Square Nuts
  • Stainless Steel 310 Square Nuts
  • Stainless Steel 310S Square Nuts
  • Stainless Steel 310H Square Nuts
  • Stainless Steel 316 Square Nuts
  • Stainless Steel 316L Square Nuts
  • Stainless Steel 316Ti Square Nuts
  • Stainless Steel 317 Square Nuts
  • Stainless Steel 317L Square Nuts
  • Stainless Steel 321 Square Nuts
  • Stainless Steel 321H Square Nuts
  • Stainless Steel 347 Square Nuts
  • Stainless Steel 347H Square Nuts
  • Stainless Steel 904L Square Nuts
  • Stainless Steel 410 Square Nuts
  • Stainless Steel 446 Square Nuts
  • SMO 254 Square Nuts
  • 17-4 PH Stainless Steel Square Nuts

Grades of Nickel Alloys Square Nuts

  • Inconel 600 Square Nuts
  • Inconel 601 Square Nuts
  • Inconel 625 Square Nuts
  • Inconel 718 Square Nuts
  • Incoloy 800 Square Nuts
  • Incoloy 825 Square Nuts
  • Monel 400 Square Nuts
  • Monel K500 Square Nuts
  • Nickel 200 Square Nuts
  • Nickel 201 Square Nuts
  • Hastelloy C276 Square Nuts
  • Hastelloy C22 Square Nuts
  • Hastelloy B2 Square Nuts
  • Hastelloy B3 Square Nuts
  • Hastelloy X Square Nuts

Duplex Steel Square Nuts- Grades

  • UNS S32205 Square Nuts
  • UNS S31803 Square Nuts

Super Duplex Steel Square Nuts - Grades

  • UNS S32750 Square Nuts
  • UNS S32760 Square Nuts

Inconel/Incoloy Square Nuts - Grades

  • Inconel 600 Square Nuts
  • Inconel 601 Square Nuts
  • Inconel 625 Square Nuts
  • Inconel 718 Square Nuts
  • Incoloy 800 Square Nuts
  • Incoloy 825 Square Nuts

Monel Jam Square - Grades

  • Monel 400 Square Nuts
  • Monel K500 Square Nuts

Nickel Square Nuts - Grades

  • Nickel 200 Square Nuts
  • Nickel 201 Square Nuts

Hastelloy Square Nuts - Grades

  • Hastelloy C276 Square Nuts
  • Hastelloy C22 Square Nuts
  • Hastelloy B2 Square Nuts
  • Hastelloy B3 Square Nuts
  • Hastelloy X Square Nuts

Titanium Square Nuts - Grades

  • Titanium Grade 2 Square Nuts
  • Titanium Grade 5 Square Nuts

Tantalum Square Nuts- Grades

  • UNS R05200 Square Nuts
  • UNS R05252 Square Nuts
  • UNS R05255 Square Nuts
  • UNS R05400 Square Nuts

Cupro Nickel Square Nuts - Grades

  • CuNi 90/10 Square Nuts
  • CuNi 70/30 Square Nuts

Copper Square Nuts - Grades

  • UNS C11000 Square Nuts
  • UNS C10100 Square Nuts
  • UNS C10200 Square Nuts
  • UNS C12000 Square Nuts
  • UNS C12200 Square Nuts

Carbon Steel Square Nuts - Grades

  • Carbon Steel AISI 1018 Square Nuts
  • Carbon Steel AISI 1020 Square Nuts
  • Carbon Steel AISI 1040 Square Nuts
  • Carbon Steel AISI 1045 Square Nuts

Alloy Steel Square Nuts - Grades

  • Alloy Steel 4130 Square Nuts
  • Alloy Steel 4140 Square Nuts
  • Alloy Steel 4340 Square Nuts
  • Alloy Steel 8620 Square Nuts
  • ASTM A193 Alloy Steel Gr B7 Square Nuts
  • ASTM A193 Alloy Steel Gr B7M Square Nuts
  • ASTM A320 Alloy Steel Gr L7 Square Nuts
  • ASTM A320 Alloy Steel Gr L7M Square Nuts
  • ASTM A320 Alloy Steel Gr L43 Square Nuts
  • ASTM A320 Alloy Steel Gr L43 Square Nuts
  • ISO 898-1 Alloy Steel Gr 8.8 Square Nuts
  • ISO 898-1 Alloy Steel Gr 10.9 Square Nuts
  • ISO 898-1 Alloy Steel Gr 12.9 Square Nuts

Brass Square Nuts - Grades

  • UNS C21000 Square Nuts
  • UNS C22000 Square Nuts
  • UNS C22600 Square Nuts
  • UNS C23000 Square Nuts
  • UNS C24000 Square Nuts
  • UNS C26000 Square Nuts
  • UNS C26800 Square Nuts
  • UNS C27000 Square Nuts
  • UNS C27200 Square Nuts
  • UNS C28000 Square Nuts
  • UNS C33000 Square Nuts
  • UNS C33500 Square Nuts
  • UNS C34000 Square Nuts
  • UNS C34200 Square Nuts
  • UNS C35300 Square Nuts
  • UNS C35600 Square Nuts

Aluminium Square Nuts - Grades

  • Aluminium Alloy 1050 Square Nuts
  • Aluminium Alloy 1060 Square Nuts
  • Aluminium Alloy 1060 Square Nuts
  • Aluminium Alloy 1070 Square Nuts
  • Aluminium Alloy 1080 Square Nuts
  • Aluminium Alloy 1100 Square Nuts
  • Aluminium Alloy 1145 Square Nuts
  • Aluminium Alloy 2011 Square Nuts
  • Aluminium Alloy 2014 Square Nuts
  • Aluminium Alloy 2017 Square Nuts
  • Aluminium Alloy 2024 Square Nuts
  • Aluminium Alloy 2090 Square Nuts
  • Aluminium Alloy 3003 Square Nuts
  • Aluminium Alloy 5052 Square Nuts
  • Aluminium Alloy 5083 Square Nuts
  • Aluminium Alloy 6061 Square Nuts
  • Aluminium Alloy 6063 Square Nuts
  • Aluminium Alloy 6066 Square Nuts
  • Aluminium Alloy 6082 Square Nuts
  • Aluminium Alloy 7050 Square Nuts
  • Aluminium Alloy 7075 Square Nuts

Zirconium Square Nuts - Grades

  • UNS R60700 Square Nuts
  • UNS R60702 Square Nuts
  • UNS R60704 Square Nuts
  • UNS R60705 Square Nuts
  • UNS R60706 Square Nuts

Beryllium Copper Square Nuts - Grades

  • UNS C17200 Square Nuts
  • UNS C17300 Square Nuts
  • UNS C17500 Square Nuts
  • UNS C17510 Square Nuts

Phosphor Bronze Square Nuts - Grades

  • UNS C51000 Square Nuts
  • UNS C51900 Square Nuts
  • UNS C52100 Square Nuts
  • UNS C54400 Square Nuts

Silicon Bronze Square Nuts - Grades

  • UNS C65100 Square Nuts
  • UNS C65500 Square Nuts
  • UNS C66100 Square Nuts

Characteristics of Square Nuts

  • Durable Material: Square nuts are typically made from robust materials such as steel, stainless steel, or brass, ensuring long-lasting durability and resistance to corrosion.
  • Flat Sides: Unlike standard hexagonal nuts, square nuts have flat sides, making them ideal for applications where wrenches or pliers might be used to tighten or loosen the nut.
  • Easy Alignment: The square shape of these nuts allows for easy alignment during assembly, providing a stable and secure fit.
  • Uniform Stress Distribution: Square nuts distribute stress more evenly than rounded nuts, reducing the risk of damage to the connected materials.
  • Wide Range of Sizes: Square nuts are available in various sizes, making them suitable for different applications and accommodating diverse bolt dimensions.
  • Used in Specialized Fastening: Square nuts are commonly used in specialized applications, including machinery, automotive, and woodworking, where specific torque requirements and fastening needs exist.

Applications of Square Nuts

Application Description
Construction Industry Square nuts are commonly used in construction for securing bolts and threaded rods in structural frameworks and supports. Their square shape provides a stable grip, preventing loosening due to vibrations and ensuring structural integrity.
Machinery and Equipment In machinery and equipment, square nuts are crucial for fastening components securely. They are used in conjunction with bolts to ensure parts remain tightly connected, thereby enhancing operational reliability and safety.
Automotive Manufacturing Square nuts find application in automotive manufacturing, particularly in assembly lines for securing various components. They contribute to the stability of automotive parts and assemblies, withstanding the rigors of vehicle operation.
Industrial Applications Across various industrial sectors, square nuts play a vital role in fastening machinery parts, conveyor systems, and other critical equipment. Their robust design and secure fit make them ideal for heavy-duty applications.
Furniture Assembly Square nuts are used in furniture assembly, especially for connecting frame components securely. They ensure stability and durability in furniture pieces, providing a reliable fastening solution.
Plumbing and Pipework In plumbing and pipework installations, square nuts are employed to secure fittings and fixtures. Their strong grip helps maintain tight seals and prevents leaks, ensuring efficient plumbing systems.
Electronics and Electrical Equipment Square nuts are used in electronics and electrical equipment for securing panels, racks, and enclosures. They provide a secure attachment method that supports the safe operation of sensitive electronic components.

Wide Range of Quality Products

Explore our comprehensive range of products, ensuring you find the perfect solution for your specific requirements.


Competitive Pricing and Cost Savings

Save money without compromising on quality, thanks to our competitive prices and cost-effective options.


Exceptional Customer Service

Personalized assistance, prompt responses, and a commitment to meeting your needs, making your purchase process seamless.

Send us your Requirement for Square Nuts

We can assure you one of best prices in the Industry. We respond to all enquiries with in 4-8 hours on all business days. Send us your requirement on info@gicfasteners.com

Square Nuts - FAQs

Square nuts are four-sided nuts that have flat sides and are used with bolts and screws to secure materials. Unlike regular hexagonal nuts, square nuts have a square shape, making them easier to grip with tools and providing a more secure fit.

Square nuts find widespread applications in industries such as automotive, construction, machinery, electronics, woodworking, aerospace, and marine. They are preferred in applications where a higher torque is required and for their ability to distribute stress evenly.

Square nuts are manufactured in a variety of materials including steel, stainless steel, brass, and other alloys. The choice of material depends on the specific application requirements, such as resistance to corrosion or the need for high tensile strength.

Yes, square nuts are generally reusable if they are not damaged or deformed during removal. It's essential to inspect the nut and its threads for any signs of wear or damage before reusing them in another application.

Square nuts are manufactured according to various international standards such as DIN (German), ASTM (American), ISO (International), and BS (British) standards. These standards ensure the nuts' dimensions, materials, and performance meet the required industry specifications.

Square nuts are specifically designed to be used with square-headed bolts. While they can technically fit on bolts with other shapes, it is not recommended as it may compromise the integrity of the fastening system. It is advisable to use square nuts with square-headed bolts for optimal performance.

Square nuts should be tightened using a suitable wrench or pliers that fit securely on the flat sides of the nut. It's essential to apply the correct amount of torque to ensure a tight and secure fastening. Over-tightening can lead to thread damage, while under-tightening can result in loose connections.

Yes, square nuts are available in a wide range of sizes to accommodate various bolt dimensions. From small nuts used in electronics to large nuts used in construction and heavy machinery, there are square nuts available in different sizes to meet diverse application requirements.

Square nuts, especially those made from recyclable materials like steel and stainless steel, are environmentally friendly. They can be recycled and reused, reducing the demand for new raw materials and contributing to sustainable manufacturing practices.

Square Nuts - Export Destination

Square Nuts Supplier in North America
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States.
Square Nuts Supplier in South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.
Square Nuts Supplier in Europe
Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic (Czechia), Denmark, Estonia, Finland, France, Germany, Greece, Holy See, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom.
Square Nuts Supplier in Asia
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Oman, Pakistan, Palestine, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Sri Lanka, State of Palestine, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates, Uzbekistan, Vietnam, Yemen.
Square Nuts Supplier in Australia
Australia, Fiji, Kiribati, Marshall Islands, Micronesia, Nauru, New Zealand, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu.