Precision CNC Machined Stainless Steel U Pins Flat Head Grooved Clamping Pins

Precision CNC Machined Stainless Steel U-Pins - Flat Head Grooved Clamping Pins

Product Overview

Our high-precision stainless steel U-pins are CNC machined for secure clamping, alignment, and fastening in demanding industrial applications. Featuring a flat head design and grooved ends, these pins provide excellent retention, vibration resistance, and easy installation in machinery, automotive, and assembly systems.

Key Features & Benefits

✔ Premium Material

• Stainless Steel 304/316 – Corrosion-resistant, high strength, and durability

• Optional 17-4PH (Precipitation Hardened) for extreme wear resistance

✔ Precision CNC Machining

• Tolerances: ±0.01mm (Standard) | ±0.005mm (High Precision)

• Grooved Ends – Ensures secure retention with snap rings or clips

• Flat Head Design – Prevents rotation and provides a flush surface

✔ Dimensions & Customization

• Diameter: 3mm–25mm

• Pin Length: 10mm–150mm

• U-Bend Radius: Customizable

• Surface Finish: Ra 0.4μm–1.6μm (Mirror Polish Available)

✔ Secondary Processing

• Passivation – Enhanced corrosion resistance

• Electropolishing – Smooth, burr-free finish

• Laser Marking – Part numbers, logos, or batch codes

✔ Quality Assurance

• 100% Dimensional Inspection (CMM, Optical Comparators)

• Hardness Testing – HRC 28-55 (Depending on Material)

• Salt Spray Test – 500+ Hours (ASTM B117)

Precision CNC Machined Stainless Steel U-Pins - Technical Specifications

Applications

• Automotive – Suspension bushings, linkage retention

• Industrial Machinery – Shaft alignment, pivot pins

• Aerospace – Lightweight fastening solutions

• Electronics – Panel mounting, connector retention

Why Choose Our U-Pins?

✅ High Wear Resistance – Long-lasting performance in harsh conditions
✅ Secure Retention – Grooved ends prevent accidental dislodging
✅ Customizable – Tailored dimensions & materials for your needs
✅ Fast Turnaround – Prototypes in 5 days | Production in 15–40days

Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.
We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful quality control system, and professional customer service... We will offer professional services, high-quality products and favorable prices. We sincerely welcome domestic and foreign customers to cooperate with us!