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Metric CNC Stainless Steel Nuts for Machinery Parts¹

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Product Description Metric CNC Stainless Steel Nuts for Machinery Parts Stainless steel nuts are key fasteners in mechanical assembly. Their corrosion resistance, high strength, and precision fit make them widely used in the automotive, aviation, marine, and industrial equipment sectors. This article will detail the manufacturing process, material selection, and industry applications of stainless steel nuts.Product Description Production typeCustom production and processingMaterialMetal, non-metal, carbon steel, stainless steel, copper, aluminum alloyProcessing methodsCNC Trining Parts 5-axis CNC machining centers, grinding machines, wire cuttingProcessing EquipmentCNC Trining Parts 5-axis CNC machining center, grinder, wire cuttingAccuracy±0.02mmWhether proofingyesIs it customizedyesProofing time7-15 daysOEM/ODMOEM ODM CNC machining servicesurface treatmentElectroplating, zinc plating, chrome plating, nickel plating, oxidation, hard oxidationOriginDongguan, ChinaQuotationsFOBBusiness Type:Manufacturer/Factory & Trading CompanyMain Products:CNC parts; Machining parts Management System Certification:ISO 9001:2015Average Lead Time:Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays Stainless Steel Nut Manufacturing Proces1. Material Selection and Blank PreparationStainless steel nuts are typically made of 304 (A2) or 316 (A4) stainless steel due to their excellent corrosion resistance (especially 316 stainless steel's resistance to pitting in chloride environments). The raw material is cold headed or hot forged to ensure complete metal flow and enhance mechanical properties.2. CNC Precision Machining Turning: A CNC lathe is used to precisely turn the nut's outer diameter and internal threads, ensuring dimensional tolerances within ±0.05mm. Tapping: High-speed steel taps or extrusion molding are used to create internal threads, ensuring thread accuracy of 6H (ISO standard) to prevent galling during assembly. Deburring and Polishing: Vibratory polishing or electrolytic polishing is used to remove machining burrs and enhance surface finish (Ra ≤ 0.8μm).3. Heat Treatment and Surface Treatment Solution Treatment (for austenitic stainless steel): Heating to 1050°C followed by rapid cooling eliminates processing stresses and improves corrosion resistance.Surface Passivation: Using nitric or citric acid to form a dense chromium oxide layer further enhances rust resistance.Optional coatings include nickel plating (for improved wear resistance) or Dacromet coating (for high-temperature environments).Industry Applications of Stainless Steel Nuts1. Automotive Manufacturing A4-80 grade (316 stainless steel) nuts are used in engines, chassis, and exhaust systems. They withstand salt spray corrosion and ensure long-term tightening reliability.2. Marine EngineeringIn ship assembly, 316 stainless steel nuts are widely used for deck fasteners and pipe connections due to their resistance to seawater corrosion.3. Food and Medical Equipment304 stainless steel nuts are non-toxic, easy to clean, and FDA-compliant, making them suitable for pharmaceutical machinery and food processing equipment.Future Development Trends Intelligent Inspection Technology: Introducing machine vision to automatically inspect thread accuracy, replacing traditional go/no-go gauges and improving quality inspection efficiency. High Strength and Lightweight: Developing new precipitation-hardened stainless steels (such as 17-4PH) to increase strength (≥1000 MPa) while maintaining corrosion resistance. Environmentally Friendly Surface Treatment: Utilizing a chromium-free passivation process to reduce heavy metal contamination and comply with the RoHS Directive.Company Profile We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of market tempering and exploration, it has high-quality technical management personnel, experienced designers, R&D personnel and a perfect company management system.CNC Trining Parts5-axis CNC workshop Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc.2.5-dimensional detection equipmentAuxiliary production equipment: electroplating, anodizing, hard anodizing and surface treatment.We have complete testing equipment: sophisticated three-dimensional testing, two-dimensional testing, hardness tester, height meter, projector and other conventional testing equipment.If you are interested in our products, please contact me and I will provide the best price support and quality service.Three-dimensional imagerI believe we will establish a good and long-term cooperation.Welcome to send pictures and letters to discuss, thank you! Our Advantages We cooperate with many high-quality material suppliers, and the quality is very guaranteed. Please feel free to choose our materials. At the same time, supporting documents can be provided for all materials. Materials are available, such as aluminum alloy, steel alloy, carbon steel, stainless steel, copper, brass, titanium alloy, bronze, nylon, acrylic, etc. Aluminum 6061/6063/7075; Iron 1215/45/1045; Stainless steel 303/304/316; Copper; Brass; Bronze (H59/H62/T2/H65); Plastic POM/PE/PSU/PA/PEEK, etc. can be based on Customer requirements.surface treatment For surface treatment, our suppliers have been working with us for many years. They have rich experience and are familiar with all the quality requirements of each other. The quality is stable and more guaranteed. Such as: heat treatment, spray painting, powder coating, blackening, silver/gold plating, electrolytic polishing, nitriding, phosphating, nickel/zinc/chromium/TiCN plating, anodizing, polishing, passivation, sandblasting, galvanizing, heat treatment , hardening, laser marking, etc. according to customer requirements.Aluminum alloy surface oxidationDust-free electroless nickel plating on carbon steel surface FAQFAQQ1: Where can I get product & price information?A1: Send us an inquiry e-mail, we will contact you once we received your mail.Q2: How long will I get the sample?A2: Depends on your specific items, within 3-7 days generally.Q3: What kinds of information do you need for a quote?A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.Q4: What are the payment terms?A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you canpay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T ispreferred.Q5: How to deliver the goods?A5: We deliver the products by courier company.Q6: Are you a trading company or factory?A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.Q7: What shall we do if we don't have drawings?A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts withdimensions(Length, Height, Width), CAD or 3D file will be made for you.Q8: Can we get some samples before mass production?A8: Absolutely yes.Q9: Will my drawings be safe after sending them to you?A9: Yes, we will keep them well and won't release them to the third party without your permission.Q10: Is it possible to know the operation status of my products without visiting your company?A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show themachining progress.Q11: If you make poor quality goods, will you refund?A11: In fact, we won't take risks to produce poor-quality products. Meanwhile, we manufacture good quality products till you aresatisfied. Packaging & Shipping Packaging Details 1. Commercial packaging: 1pc/plastic bag + color box +carton + pallet;2. Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet; 3. According to the requirement of customer.

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