MachineU > China Products > Machinery > Machine Tool Equipment > Machine Tools Accessories > Machine Tool Spindle
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
Specifications
Precision :
Min0.001
Brand Name :
SITUO
Model Number :
ST-00011
Certification :
ISO9001 & TS16949
Place of Origin :
GuangdongDongguan
MOQ :
1PCS
Price :
5-10 USD per item
Payment Terms :
T/T
Supply Ability :
10000PCS per day
Delivery Time :
Communication
Packaging Details :
Communication
Sample period :
10 to 15 days
Material :
SUS304 / DIN 2462
Category :
Stainless steel Sleeve
Processing technology :
CNC turning
Surface treatment :
Passivation
head shape :
Customized
Description
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
Stainless steel flat-head multi-step pin shaft M4 screws CNC machining
Technical Classification System of Machined Threads
Classification by Functional Orientation
  • Fastening Threads (Basic Type): Triangular thread profile including Metric (M), Whitworth (W), and Unified National (UNC/UNF) standards. Thread angle 55°/60°, pitch diameter tolerance IT8-IT10, pitch accuracy ±0.02mm.
  • Transmission Threads (High-Precision Type): Core types include Trapezoidal (Tr), Buttress (B), and Ball Screw threads. Ball screws feature transmission efficiency ≥90% and positioning accuracy ±0.001mm.
  • Sealing Threads (Leak-Proof Type): 1:16 taper design with BSPP/BSPT (R/Rc) and NPTF standards. Taper tolerance ≤±0.005mm/m, sealing surface roughness Ra≤1.6μm.
  • Special Threads (Customized Type): Including aerospace MJ threads and square threads requiring customized tools and fixtures.
Technical Adaptability of Processing Processes
Processing Process Core Parameters Suitable Threads Advantages Limitations
Turning Speed 500-3000rpm, Feed rate 0.1-1.0mm/r All types (including non-standard) Flexible, high efficiency for single-piece High cost for mass production, skill-dependent
Tapping Bottom hole tolerance Small-size fastening threads (M1-M20) High mass production efficiency, compatible with automation Only for standard threads, easy tool breakage in deep holes
Rolling/Thread Rolling Rolling force 5-50kN, Preformed diameter tolerance ±0.03mm Fastening coarse-pitch threads (M3-M30) Chipless forming, strength increased by 20-30% Only for ductile materials, poor adaptability to non-standard threads
Thread Grinding Grinding wheel speed 3000-6000rpm, Grinding allowance 0.05-0.1mm High-precision transmission/sealing threads Precision IT4-IT6, excellent surface quality Long processing cycle, high equipment cost
Core Technical Control Points
Preprocessing Controls
  • Clamping concentricity ≤0.01mm, use centering fixtures
  • Match special tools with cutting edge roughness Ra≤0.8μm
  • Quench and temper hard materials, remove oxide layers from soft materials
Processing Process Controls
  • Cutting parameters: High speed (500-3000rpm) and low feed rate for soft materials; low speed (300-1000rpm) and medium feed rate for hard materials
  • Coolant pressure ≥0.3MPa for difficult-to-machine materials
  • Dimensional monitoring: Inspect pitch diameter, pitch, and thread angle for first article; sample inspection every 50 pieces during mass production
  • Chip removal and cooling: High-pressure cooling (flow rate ≥10L/min) for internal threads; bottom hole depth of blind holes exceeds effective length by 2-3 times the pitch
Post-Processing and Inspection Controls
  • Surface treatment: Galvanizing (8-12μm) / nitriding (0.1-0.3mm) for corrosive environments; Teflon coating for high-temperature scenarios
  • Precision inspection: Use go/no-go gauges for general threads; control cumulative pitch error ≤0.01mm/m for high-precision threads
  • Fit verification: Pressure test for sealing threads; no jamming and noise ≤75dB during no-load operation for transmission threads
Special Scenario Controls
  • Thin-walled parts: Rough machining - stress relief - finish machining, reduce feed rate by 30%
  • Multi-start threads: Lead accuracy ≤0.02mm
  • Large-size threads (>50mm): Turn-mill composite machining, cutting depth ≤0.2mm per pass
Manufacturing Capabilities
Head Shape Classification
Pan Head, Button Head, Flat Head / Countersunk Head, Oval Countersunk Head, Hex Head, Socket Head Cap Screw, Square Head, Set Screw / Headless Screw, Truss Head, Eye Head, Flange Head, Phillips Pan Head, Phillips Countersunk Head
Processing Techniques
CNC Lathe, Machining Center (MC), Boring Machine, Grinding Machine, Broaching Machine, Hobbing Machine, EDM Sinker Machine, Wire EDM Machine, Forging Press, CNC Punch Press
Surface Treatment Requirements
Surface Cleaning & Finishing, Chemical Conversion Coating, Electrochemical Treatments, Surface Coating, Surface Modification (Heat Treatment/Diffusion), Mechanical Strengthening, and various specialized finishing processes
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.
Technical Specifications
Maximum Processing Outer Diameter 60mm
Minimum Control Tolerance 0.001mm
Equipment Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment
Company Size 300 employees including 20 technicians, 10 engineers, and 15 quality control personnel
Certifications ISO9001 and TS16949 automotive certifications with 8S management
Major Customers Foxconn, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, Cater-pillar
Production Capacity
Main Products Stainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners
Business Type Factory / Manufacturer
Services CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service
Materials Aluminum, Stainless Steel, Steel, Alloy Steel, Titanium, Brass, Copper, Bronze, Magnesium alloy, Engineering Plastics
Finishes Sandblasting, Anodizing, Plating, Polishing, Powder coating, Passivation, and various specialized surface treatments
Drawing Formats STEP, STP, GIS, CAD, PDF, DWG, DXF etc or samples
Tolerance +/-0.01mm ~ +/-0.05mm
Surface Roughness Ra 0.1~3.2
Inspection Equipment Complete inspection lab with Micrometer, Optical Comparator, CMM, and various precision measuring instruments
Product Images
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
Send your message to this supplier
Send Now

M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts

Ask Latest Price
Product Detail
Precision :
Min0.001
Brand Name :
SITUO
Model Number :
ST-00011
Certification :
ISO9001 & TS16949
Place of Origin :
GuangdongDongguan
MOQ :
1PCS
Contact Supplier
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts
M4 Screws Flat Head Multi Step Pin Shaft CNC Machining Small Parts

Dongguan Situo Hardware Products Technology Co., Ltd

Verified Supplier
1 Years
guangdong, dongguan
Since 2019
Business Type :
Manufacturer, Seller
Main Products :
CNC Hardware Parts, Connector Hardware, CNC Screws
Total Annual :
2800000-3500000
Employee Number :
50~100
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products CNC Hardware Parts
MachineU China Products Machinery Machine Tool Equipment Machine Tools Accessories Machine Tool Spindle
Contact Supplier
Submit Requirement