Stainless steel round-head square-slot nut, blind-hole locking component, precision CNC processed hardware​

Practical Products

CNC Production & Processing Features

• High-strength and wear-resistant materials are adopted (such as 40CrNiMoA, bearing steel).
• CNC machining enables integrated structures with functions of anti-loosening, quick release, positioning and locking (e.g., nuts with buckles and slots), meeting the high-speed motion requirements of automated equipment.
• Excellent dimensional consistency; internal thread precision reaches Grade 6H, ensuring stable locking force with bolts.
• Surface treatments including nitriding and quenching are applied to improve hardness and wear resistance, extend service life, and adapt to frequent disassembly and assembly.

Performance Advantages

• No loosening or tripping under high-speed reciprocating motion (e.g., manipulator joint rotation), resistant to high-frequency impacts.
• Maintain precision and locking force after frequent disassembly, suitable for the “high-load, high-frequency” operation of automated equipment.
• Internal threads are resistant to wear, ensuring stable equipment operation, reducing downtime and maintenance, improving production efficiency, and lowering equipment operation and maintenance costs.

Common CNC Machining Problems & Key Points

• Wear Resistance Issues

   

  Uneven hardness, surface cracks after nitriding and quenching, and rapid thread profile wear of internal threads are likely to occur. It is necessary to control heat treatment temperature and time, test hardness after processing to avoid wear caused by insufficient hardness, and optimize the tapping process to ensure full thread profiles.
   
• Quick-Release Structure Machining Issues

   

  Dimensional deviations of buckles and slots in quick-release nuts may cause jamming during disassembly and assembly. Precise machining of buckle dimensions is required to ensure smooth operation, while sufficient buckle strength must be guaranteed to prevent breakage from frequent disassembly and assembly that affects equipment operation.
   
• High-Load Adaptation Issues

   

  Nuts for manipulator joints and servo motors bear high-frequency impacts. The strength of internal threads must be controlled to avoid thread tripping. Meanwhile, transition fillets between the nut body and the shank should be properly designed to reduce stress concentration and prevent fracture.
   
• Batch Assembly Issues

   

  Automated equipment assembly has extremely high requirements for dimensional consistency of nuts. CNC machines must be calibrated regularly and tapping parameters optimized. Samples from each batch should be inspected for dimensions and hardness to ensure stable internal thread precision for automated assembly.

   

   

  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 Siemens, bo-sch, Foxconn, Panasonic 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