Custom Metric Pull Dowel Pins Stainless Steel 303 416 304 316 Ss Dowel Pins

Beschreibung

What Are Pull Dowel Pins?

Pull dowel pins are precision-engineered cylindrical fasteners designed for alignment and positioning in mechanical assemblies. Unlike standard dowel pins, they feature an internally threaded hole (or other extraction mechanisms) at one end, allowing for easy removal using a corresponding screw or tool. This makes them ideal for applications requiring frequent disassembly and reassembly without damaging the mating parts.

Specifications of Pull Dowel Pins

1. Materials:

   • Carbon Steel (e.g., AISI 1018, 1045) – General-purpose use.

   • Alloy Steel (e.g., AISI 4140, 4340) – High-strength applications.

   • Stainless Steel (e.g., 303, 304, 316) – Corrosion-resistant for harsh environments.

   • Tool Steel (e.g., D2, S7) – Extreme wear resistance.

2. Surface Treatments:

   • Black Oxide – Improves corrosion resistance and reduces glare.

   • Zinc Plating – Enhanced rust protection.

   • Hard Chrome – High wear resistance for precision tooling.

   • Nitriding – Increases surface hardness and durability.

3. Common Sizes (Diameter × Length):

   • Metric: 3mm × 10mm to 20mm × 100mm

   • Imperial: 1/8″ × 0.5″ to 3/4″ × 4″

   • Thread sizes: Typically M3 to M12 or #4-40 to 1/2″-13 UNC.

Applications of Pull Dowel Pins

• Machinery & Tooling: Alignment of molds, jigs, and fixtures.

• Aerospace: Secure positioning in aircraft assemblies.

• Automotive: Engine and transmission component alignment.

• Medical Devices: Precision equipment requiring sterile disassembly.

• Industrial Automation: Modular robotic systems.

Excellent Case: Injection Mold Tooling

Scenario: A plastic injection molding company uses pull dowel pins in their modular mold system. The pins ensure perfect alignment between mold halves during production. When switching to a different mold configuration, technicians simply thread a bolt into the pull dowel pin’s internal hole, extract it effortlessly, and reconfigure the setup without hammering or damaging the mold. This reduces downtime by 30% and extends mold life significantly.

Key Benefits:
✔ Quick removal without force.
✔ Precision retention (<0.01mm tolerance).
✔ Cost-effective maintenance compared to traditional dowels.