Precision Pins

Precision Pins Manufacturer | Dowel Pin, Taper Pin, Shear Pin & Custom Pins
Dream produces high precision pins: dowel pins, taper pins, roll / grooved pins, shear pins and custom precision pins, mainly in stainless steel (304 / 316 / 316L),brass,carbon steel,aluminium,plastic. OEM CAD/STEP, fast samples and batch production for industrial applications.
Pins are standard mechanical fasteners used for locating, joining, shear protection and positioning. Common names include dowel pin (precision locating pin), taper pin (press fit wedge pin), roll / grooved pin (spring pin), split pin (cotter pin) and shear pin (safety break pin). They provide accurate alignment, torque transmission prevention, or controlled failure under overload.
Product Types & Classification
1.Dowel Pin: Precision cylindrical dowel pins (solid / slotted), used for accurate locating, alignment and fixture positioning.
2.Taper Pin: Taper pins: wedge shaped press fit pins for axial positioning; facilitate assembly and disassembly.
3.Shear Pin: Shear pins: sacrificial safety pins designed to break under overload to protect drivetrains.
4.Roll / Grooved / Spring Pin: Roll or grooved (spring) pins: slotted or grooved elastic pins for easy installation and vibration resistance.
5.Split / Cotter Pin: Split (cotter) pins: used to secure nuts or retain shafts; simple and removable.
6.Custom Precision Pins: Custom pins: non standard sizes, special end forms, drilled/slot features, keyed variants, heat treatment or special coating requests.
Materials & Surface Treatments
1.Stainless Steel (primary): 304, 316, 316L, Duplex: preferred for corrosion resistance and hygienic / marine / chemical applications (e.g., stainless steel dowel pin, 316 shear pin).
2.Hardened Steel / Alloy Steel: For high shear strength or high wear applications (e.g., shear pins, power transmission pins); can be carburized, quenched & tempered.
3.Brass / Bronze: Used for non magnetic requirements, good conductivity, and bearing / low speed locating applications.
4.Surface Finishes: Passivation, electropolish, zinc or nickel plating, PTFE coating, and black oxide to meet corrosion resistance, wear resistance and aesthetic requirements.
Precision pins are used across industries for alignment, retention and safety:
1.Machine tools & fixtures: dowel pins for jig and fixture accurate locating.
2.Gearboxes & transmissions: shear pins as sacrificial safety elements.
3.Hydraulic & pneumatic assemblies: roll / grooved pins for shaft retention.
4.Automotive & aerospace: high tolerance dowel pins and hardened shear pins.
5.Food, pharma & marine: 316L stainless steel pins with electropolish for corrosion resistance and sanitary use.
6.Packaging, printing & automation: indexing pins and quick replacement shear pins.
Submit diameter, length, material and assembly method or upload CAD/STP/IGS for a rapid quote and engineering review to sales@dream-steel.com