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CNC precision stainless steel machining parts external hexagonal nuts numerical control

Categories CNC Screws
Payment Terms: T/T
Brand Name: SITUO
Model Number: ST-30007
Certification: ISO9001 & TS16949
Place of Origin: GuangDong Dongguan
MOQ: 1PCS
Price: 5-10 USD per item
Supply Ability: 10000PCS per day
Delivery Time: Communication
Packaging Details: Communication
Material: stainless steel
Category: hexagonal nuts
Surface treatment: Passivation
Processing technology: CNC turning
Sample period: 10 to 15 days
Precision: Min0.001
head shape: Hexagon
product name: nut
Specification: Customized
Application: screw
Corrosion Resistance: High
Size: M16
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CNC precision stainless steel machining parts external hexagonal nuts numerical control

Stainless steel external hexagonal nuts - CNC precision machining by numerical control

Electronics / 3C / Telecommunications Industry

Application Scenarios

Covers core components for consumer electronics and telecommunications equipment, including internal fixing screws for consumer electronics such as mobile phones, computers, and tablets (for motherboards, screens, and battery fixation), fixing screws for connectors and PCBs, as well as precision fasteners for telecommunications equipment such as base stations and servers.
Such fasteners must adapt to the trend of miniaturization and lightweighting of equipment, while meeting functional requirements including conductivity, insulation, and rust resistance.

Core Production Characteristics

  • Miniaturized Production Technology Mainly small-sized screws from M0.8 to M3, with some products only 2–5 mm in length. Miniaturized machining is required to solve difficulties such as positioning challenges and unstable machining accuracy for small-sized products. Micro cold heading machines and precision CNC lathes are used with dedicated micro-cutting tools, and machining parameters are optimized to ensure clear threads and accurate dimensions. Verticality and coaxiality are strictly controlled to avoid affecting the assembly accuracy of electronic devices.
  • Lightweight and Functional Material Selection Lightweight materials including aluminum alloy, copper alloy, and titanium alloy are used to reduce the overall weight of equipment while meeting conductivity and heat conduction requirements based on application scenarios:
    • Copper alloy is used for PCB screws to improve conductivity.
    • Aluminum alloy is used for heat dissipation component screws to enhance thermal conductivity. Machinability of materials is optimized to prevent embrittlement and deformation, ensuring product strength meets assembly requirements.
  • Structure Design for Assembly Compatibility Structures such as countersunk head, torx drive, cross recess, security drive, and ultra-thin head are widely adopted.
    • Countersunk and ultra-thin heads avoid protrusion and preserve appearance and hand feel.
    • Torx and security drives prevent disassembly by non-professionals and improve equipment safety. Slot dimensions are precisely machined for perfect screwdriver matching. Thread structures are optimized to improve assembly efficiency and avoid thread slipping.
  • Optimized Surface Treatment Technology Different surface treatments are applied according to functional requirements:
    • Anodizing: Improves wear resistance and appearance of aluminum alloy screws.
    • Nickel plating: Enhances rust resistance and conductivity.
    • Gold plating: Improves conductivity and corrosion resistance for high-frequency telecommunications equipment. Coating thickness and uniformity are controlled to prevent peeling and oxidation. All surface treatments comply with environmental standards for electronic devices, such as RoHS.

General Core Characteristics of CNC Machined Screws

  • Ultra-high precision: Normal tolerance ±0.01 mm, precision version up to ±0.001 mm, with precise, gap-free thread matching.
  • High consistency: Program-controlled, with high uniformity in dimensions, geometric form, and surface quality in mass production.
  • Flexible customization: No mold required, enabling fast switching for non-standard pitches, special heads, multi-step shafts, and special drive types.
  • Wide material compatibility: Capable of machining stainless steel, titanium alloy, aluminum alloy, copper alloy, high-temperature alloy, etc.
  • Flexible efficiency & batch size: Suitable for small-batch prototyping and medium-batch customization, supporting single-piece and multi-variety fast switching.

Comparison: CNC Machined Screws vs. Traditional Screws (Thread Rolling / Cold Heading)

Comparison ItemsCNC Machined ScrewsTraditional Thread Rolling / Cold Heading Screws
PrecisionUltra-high (±0.001 ~ ±0.01 mm)General (±0.05 ~ ±0.1 mm)
CustomizationExtremely strong (non-standard / special / complex structures)Weak (mainly standard parts)
Batch SizeSmall batch / Medium batch / Single pieceLarge batch (starting from 10,000 pieces)
MaterialsFully compatible (including difficult-to-machine materials)Mainly low-carbon steel, aluminum alloy
CostHigh unit costLow cost in large quantities
ApplicationHigh-end, precision, customized scenariosGeneral standard parts, large-scale production

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 TypeFactory / Maufacture
ServiceCNC Machining
Turning and Milling
CNC Turning
Cold heading
stamping
Assembly Service
Material1). 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.
FinishSandblasting, 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 formatSTEP,STP,GIS,CAD,PDF,DWG,DXF etc or samples.
Tolerance+/-0.01mm ~ +/-0.05mm
Surface roughnessRa 0.1~3.2
InspectionComplete inspection lab with Micrometer, Optical Comparator, Caliper Vernier,CMM
Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge

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