· Product Overview

· Core Specifications

Material & Process Standards

• Raw Material: 304 Stainless Steel (general industrial grade) or 316 Stainless Steel (corrosion-resistant grade), offering excellent tensile strength, machinability, and resistance to harsh chemicals and saltwater.
• Processing Technology: Precision CNC turning and thread rolling for one-piece forming, ensuring uniform thread pitch and concentricity.
• Precision Tolerance: ±0.005mm for the shoulder diameter, ensuring precise alignment with mating components; thread tolerance class 6g.
• Surface Finish: Precision milled (Ra ≤ 1.6μm), with optional passivation or electropolishing for enhanced corrosion resistance.
• Structural Features: Precision-ground shoulder for accurate positioning, uniform threaded shaft for secure fastening, and a smooth rounded head for easy installation.
• Quality Certification: ISO 9001 certified, with full dimensional inspection via CMM (Coordinate Measuring Machine).

· Application Scenarios

• Industrial Automation: Robotic arm positioning pins, conveyor system guide pins, and sensor mounting screws.
• Precision Instruments: Optical equipment alignment screws, measuring device calibration pins, and laboratory equipment fasteners.
• Medical Devices: Surgical instrument components, diagnostic equipment positioning pins, and implantable device fasteners (biocompatible materials available).
• Aerospace: Lightweight structural fasteners, UAV component positioning pins, and aircraft system screws.
• Custom Machinery: Non-standard equipment guide pins, assembly line positioning screws, and tooling fixtures.

· Production Process Introduction

1. Raw Material Preparation: Cut 304/316 stainless steel bars to the required length.
2. CNC Rough Turning: Remove excess material to form the basic profile of the screw.
3. Precision Finishing: Turn the precision shoulder and smooth head to tight tolerances.
4. Thread Rolling: Form the threaded shaft using precision thread rolling to ensure uniform pitch and strength.
5. Deburring & Polishing: Remove all sharp edges and burrs, and polish critical surfaces.
6. Surface Treatment (Optional): Apply passivation or electropolishing for enhanced corrosion resistance.
7. Quality Inspection: Use CMM to verify dimensions, thread fit, and shoulder concentricity.
8. Cleaning & Packaging: Ultrasonically clean the screw to remove machining debris, then package for shipment.

· Packaging and Shipping Methods

Packaging

• Individual Screw: Wrapped in anti-static PE bags and protected with foam padding to prevent scratches and deformation.
• Bulk Orders: Packed in foam-lined partitioned cartons to avoid friction and damage between parts.
• Outer Packaging: Export-grade moisture-proof and shock-proof corrugated boxes, suitable for long-distance international transportation.

Shipping Methods

• Express Delivery (DHL/FedEx/UPS): 3–7 working days for samples, prototypes, and small-batch urgent orders.
• Air Freight: 7–15 working days for medium-batch production runs.
• Sea Freight: 20–35 working days for large-volume bulk orders.
• All shipments include real-time tracking and reinforced packaging for precision components.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 100 pieces for standard configurations; 10–50 pieces for prototype/sample orders (sample fee applicable).
• Lead Time: 5–10 working days for prototypes; 10–15 working days for standard production; 15–25 working days for large custom orders (expedited production available for urgent needs).
• Customization Capability: Full customization is supported—adjust dimensions, shoulder diameter, thread specs, material grade (304/316), and surface finish (passivation, electropolishing). We accept production based on your 2D drawings (PDF/DXF) or 3D files (STEP/IGS).