Comprehensive Range of Square Nuts (Metric & Imperial)
A square nut is a four-sided fastener with precision internal threading. Compared to standard hex nuts, its unique geometric design provides a larger surface contact area, making it ideal for tight spaces and blind locations. The sharp corner structure naturally resists spinning, offering excellent anti-rotation performance during installation.
As a leading square nut manufacturer in China, T&Y Hardware strictly complies with international standards such as DIN 557 and DIN 562 to ensure top-tier product quality. Beyond our standard inventory, our robust OEM/ODM capabilities allow us to customize materials, specifications, and surface finishes to meet your exact engineering requirements.
Industrial Square Nuts Available in Multiple Materials
T&Y manufactures and supplies square nuts in a comprehensive range of premium materials to withstand diverse industrial environments. Our capabilities include marine-grade 304 and 316 stainless steel for superior corrosion resistance, high-tensile carbon steel (Class 6 and 8) for heavy-duty structural applications, and durable brass for specialized electrical or spark-resistant requirements.
Stainless Steel Square NutsStandard：DIN557, DIN562, DIN 928
Metric Dimensions: M3, M4, M5, M6, M8, M10, M12
Imperial Size: 1/2, 1/4, 3/4, 3/8, 5/8 ,5/16, #6-32, #8-32, #10-32
Square Brass NutsStandard：DIN557, DIN562, DIN 928
Metric Dimensions: M3, M4, M5, M6, M8, M10, M12
Imperial Size: 1/2, 1/4, 3/4, 3/8, 5/8 ,5/16, #6-32, #8-32, #10-32
Carbon Steel Square NutsStandard：DIN557, DIN562, DIN 928
Metric Dimensions: M3, M4, M5, M6, M8, M10, M12
Imperial Size: 1/2, 1/4, 3/4, 3/8, 5/8 ,5/16, #6-32, #8-32, #10-32
Custom Specifications & Specialized Square Nut Types
Beyond our standard and heavy-duty inventory, T&Y Hardware excels in manufacturing specialized industrial designs to fit complex assembly systems. Our expanded lineup includes precision-engineered square cage nuts, channel nuts, framing nuts, and square T-nuts.
To support varied mechanical loads, all configurations can be seamlessly matched with standard coarse (UNC), fine (UNF), or high-load trapezoidal thread pitches based on your specific engineering blueprints.
Why Choose T&Y Hardware Square Nuts?
Trusted by Industry Giants: Proudly serving as the designated square nut supplier for 3 of the top furniture manufacturers in Europe and North America, proving our world-class quality.
Rigorous Quality Assurance: Our professional QC team executes strict, full-process tracking—from raw material inspection and semi-finished testing to final product compliance.
Seaworthy Export Packaging: All orders are securely packed in 100% export-standard reinforced cartons and heavy-duty wooden pallets to ensure zero damage during transit.
Ready-to-Ship Inventory: We maintain a massive, steady stock of standard square nuts, guaranteeing immediate dispatch and fast turnaround times for urgent orders.
- Global Compliance & Certifications: Fully certified by ISO 9001, ISO 14001, ISO 45001, and RoHS to fulfill your strictest high-quality and environmental requirements.
- Our certificate
- Strength grade
- Material
- Surface Treatment
Grade A, Grade B, Grade 2, Grade 2H, Grade C, Grade G, Grade 8
Class 4, Class 8.8, Class 10.9, Class 12.9
A2-50/A2-70/A4-70
1. Carbon steel: C1006,C1008,C1010,C1018A,C1022,C1035K,C1045K.etc
2. Stainless steel: SS201, 202, SS301, SS302,SS303,SS304,SS316,SS316L, SS347, SS410,SS416,SS420,SS430,SS435, SS904, etc
3. Duplex Stainless Steel: S32750, S32760, S2205, S2507
4. Steel:C15,C35,C45(K1045)S45C,C46(K1046),C20,etc
5. Copper:Brass(C3602,C3604,H59,H62,H65,H68,H70,H90,etc. Phosphor bronze, Silicon bronze, Red copper, Beryllium copper, and Copper, etc.
6. Iron: 12L13,12L14,12L15 etc.
7. Aluminium:AL6061,AL6063,7075 etc.
8. Titanium or titanium alloy: TAD, TA1-TA8, TB2, TC1-TC10, etc.
9.Alloy steel:SCM435,10B21,40Cr, Inconel 600, Inconel 625, Inconel 718, Monel400, K500 etc.
10. Silver or silver alloy:AgCu3,agCu7.5,AgSn3-5,AgPb0.4-0.7,AgPd3-5,AgNi10etc.
Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ),
Dacromet, Nickel Plated, Brass Plated, Copper plating, black oxidation, passivation, polishing，power coated and so on
Related Product
Square nuts are mainly used in many fields such as mechanical equipment, battery terminals, steel structures and connections of automobile parts.
The square nut needs to be disassembled with a square sleeve of the corresponding size. If the square head just gets stuck in the installation groove and cannot rotate, it can be disassembled directly from the head of the bolt.
For Standard low-carbon steel square nuts, T&Y hardware can ship you in 2-3 weeks, while for Grade 8/10 high-tensile rectangle nuts, it will take 35-40 days
Yes, T&Y hardware accepts TT, L/C, PAYPAL/Western Union (For small square lock nuts orders)
Usually, T&Y hardware QC dept checks every processing, from raw material coming in, processing testing, final testing, we check per standard and keep a record in each step.
Yes, T&Y Hardware Free Samples offered, trail orders acceptable
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