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Carbon Steel Square Nut, Industrial Square Fastener with Multiple Surface Treatments
| Place of Origin | GuangDong Dongguan |
| Brand Name | SITUO |
| Certification | ISO9001 & TS16949 |
| Model Number | ST2026-500020 |
Carbon Steel Square Nut
,Industrial Square Fastener
,CNC Nut with Surface Treatments
Carbon Steel Square Nut, Industrial Square Fastener with Multiple Surface Treatments
Product Overview
Carbon Steel Square Nut is a widely adopted industrial threaded fastener with four-sided square structure. Distinct from hex nuts, its square outline delivers excellent anti-rotation performance during assembly. Manufactured from high-quality carbon steel, this square nut supports diversified surface treatments to adapt to various working conditions. It can cooperate with matched screws and bolts to realize stable connection and locking, extensively used in mechanical frames, automation equipment, guide rail assembly, engineering hardware and general industrial assembly projects.
Key Features
Anti-Rotation Square Structural Design
The integrated four-sided square shape effectively prevents nut spinning inside mounting grooves and mounting holes. It eliminates extra positioning accessories, simplifies installation steps and keeps stable fastening force under vibration environments. This advantage makes square nuts highly suitable for guide rail, channel steel and embedded assembly scenarios.
Reliable Carbon Steel Base Material
Adopting premium carbon steel as raw material, the square nut possesses favorable tensile strength and surface hardness. It is resistant to deformation under normal fastening load, maintaining stable mechanical performance for long-term use and achieving great cost performance for mass industrial assembly.
Multiple Optional Surface Treatments
We provide a variety of surface treatment solutions to satisfy different anti-rust and appearance demands, including black oxide, zinc plating, nickel plating and sandblasting. These surface layers form a protective barrier on the nut surface, boosting rust resistance and corrosion resistance and extending service life in indoor, mildly humid environments.
Precision Internal Thread Processing
The internal thread is processed by mature tapping technology with uniform pitch, neat tooth profile and smooth surface without burrs. The thread fits tightly with matched screws, ensuring smooth screwing in and out. Stable locking effect can be maintained after repeated disassembly, effectively reducing the risk of loose connections.
Application Range
✅ Automation equipment frame connecting fasteners
✅ Guide rail and channel steel assembly square nuts
✅ Mechanical tooling and fixture fixing components
✅ Engineering machinery and metal bracket hardware
✅ General equipment assembly and maintenance threaded fittings
Quality & Custom Service
All carbon steel square nuts will go through strict dimension inspection, thread testing and appearance screening before shipment. Standard sizes are in stock for quick delivery. We also support non-standard customization based on drawings and samples, including customized sizes, thread specifications and designated surface treatments to meet personalized procurement demands from different industries.
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.
Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, which can effectively provide customers with the best technical solutions.
Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.
Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.
Our customers include , bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.
| OUR CAPACITY | ||||
| Main product names: | Stainless steel screws, carbon steel screws, pins, rivets, nuts, | |||
| eccentric nails, embedded parts, and other fasteners. | ||||
| Business Type | Factory / Maufacture | |||
| Service | CNC Machining | |||
| Turning and Milling | ||||
| CNC Turning | ||||
| Cold heading | ||||
| stamping | ||||
| Assembly Service | ||||
| Material | 1). Aluminum: AL 6061-T6, 6063, 7075-T etc | |||
| 2). Stainless steel:303,304,304L,316L,316F,630,410,420,430, etc | ||||
| 3). Steel: 4140, Q235, Q345B,20#,45# 1215,12L14 ,1144,1006,1008,1010,1015,1018 ,10B21,1035,1065 etc. | ||||
| 4)Alloy steel:5140,4135,4140,3435,5120,415 ,435,440 etc | ||||
| 5). Titanium: TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc | ||||
| 6). Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90),C27000,C51900,C11000,C3604,H62,H65 etc | ||||
| 7). Copper, bronze, Magnesium alloy, Delrin, POM,Acrylic, PC, etc. | ||||
| Finish | Sandblasting, Anodize color, Blackenning, Zinc/Nickl Plating, Polish, | |||
| Power coating, Passivation PVD, Titanium Plating, Electrogalvanizing, | ||||
| electroplating chromium, electrophoresis, QPQ(Quench-Polish-Quench), | ||||
| Electro Polishing,Chrome Plating, Knurl, Laser etch Logo, etc. | ||||
| Drawing format | STEP,STP,GIS,CAD,PDF,DWG,DXF etc or samples. | |||
| Tolerance | +/-0.01mm ~ +/-0.05mm | |||
| Surface roughness | Ra 0.1~3.2 | |||
| Inspection | Complete inspection lab with Micrometer, Optical Comparator, Caliper Vernier,CMM | |||
| Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge | ||||
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