· Product Overview

· Core Specifications

Dimensions(Customizable; Typical Specifications as Example)

• Total Length: 25mm
• Shaft Diameter (Main Body): 10mm
• Flange Diameter: 15mm
• Flange Thickness: 3mm
• Taper Angle: 3°（customizable for tight-fit scenarios）

Weight

Material

Process Standard

· Application Scenarios

• Automotive Manufacturing: Positioning pins for engine blocks, transmission casings, or body panel assembly (ensures precise part alignment).
• Aerospace Industry: Core components for aircraft structural joints, avionics mounting, or satellite equipment alignment (withstands extreme conditions).
• Medical Equipment: Precision pins for surgical instrument assemblies, diagnostic device casings, or prosthetic component connections (hygienic and corrosion-resistant).
• Industrial Machinery: Alignment pins for gearboxes, pump housings, or conveyor system components (maintains mechanical precision during operation).

· Production Process Introduction

1. Raw Material Selection: High-purity 304/316 stainless steel bars are selected to guarantee uniform material composition and excellent mechanical properties.
2. CNC Turning & Milling: Utilizes multi-axis CNC machines to shape the stepped cylinder, flange base, and tapered features in one setup — ensuring strict coaxiality and dimensional precision.
3. Precision Grinding: For critical mating surfaces (shaft and flange), precision grinding is applied to achieve ultra-smooth surfaces (Ra ≤ 0.8μm) and tight dimensional tolerance (±0.01mm).
4. Surface Treatment:
   • 304 Stainless Steel: Passivation treatment to enhance corrosion resistance and maintain a bright metallic finish.
   • 316 Stainless Steel: Optional electropolishing for an even smoother surface and improved hygiene (ideal for medical/chemical use).
5. Quality Inspection: Each pin undergoes:
   • Dimensional inspection via micrometers and Coordinate Measuring Machines (CMM).
   • Surface quality check using optical microscopy to ensure no scratches or defects.
   • Fit-testing with mating components to verify assembly precision.

· Packaging and Shipping Methods

Packaging

• Inner Packaging: Each pin is individually wrapped in anti-scratch film and placed in a foam-lined plastic tray to prevent surface damage and maintain alignment during transit.
• Outer Packaging: Sturdy cardboard boxes with “Precision Parts - Handle With Care” labeling; for bulk orders, custom wooden crates with partitioned foam are used.

Shipping

• Logistics Options: Support DHL/UPS/FedEx (international express, 3 - 7 business days) and sea freight (20 - 30 days for bulk orders). Hazardous material certification is available for shipments to regulated industries.
• Lead Time: Orders are shipped within 48 - 72 hours after confirmation; a tracking number and customs documentation (commercial invoice, packing list) are provided.

· Process

· Frequently Asked Questions (FAQ)