Double-Ended Dowel Pin with Tab

Product Description:

We start these Double-Ended Dowel Pin with Tab as cold-headed blanks from Qimao Metal Manufacturer – wire coil fed into a header, sheared to length, then banged into a rough shape in one stroke. That gets us the basic shank diameter and a pre-form of the tab without wasting material. From there they go to the CNC lathes for turning the OD to a semi-finish size, and then through the centreless grinders to bring the shank to its final tolerance. The cold-heading work-hardens the surface a bit, which gives us a head start on wear resistance before we even get to heat treatment. After grinding, we cut the keyway faces on a milling station, then deburr everything in a vibratory tumbler with ceramic media. Last step is a hot oil dip for rust protection, then gauging and packing. The whole sequence runs about eight minutes per hundred pieces, and we hold sizes without drifting all shift long.

Specification:

Products Details:

Every Double-Ended Dowel Pin with Tab from Qimao Metal Manufacturer goes through both cold heading and CNC turning. The cold header out the basic form, then the CNC lathe hits the critical dimensions—pin diameter, overall length, and tab shoulder thickness. We cut the tab concentric with the body because even a 0.02mm offset throws load distribution off during press-fit, and that leads to edge galling or bore wear down the line. Stock materials cover 1045 carbon steel for general use and SUS304 for wet or corrosive environments. Each pin gets a straightness check and a deburring pass before shipping—burrs on the tab edge will score the hole during insertion and ruin the interference fit. Unlike spring-loaded locating pins, this one has no moving internals. It locks purely through mechanical interference between the pin and the hole wall, so there’s nothing to fatigue or lose tension over years of service. Custom diameters, lengths, and tab thicknesses are available for non-standard fixture designs. Just send your drawing over.

Product Feature:

• The Double-Ended Dowel Pin with Tab with one-piece cold-headed & CNC turned construction eliminates loose internal gaps that come with multi-part assembled locating pins
• Centered full circular tab shoulder serves as a hard mechanical stop to stop over-pressing during workpiece matching
• Twin smooth cylindrical ends with uniform surface finish deliver consistent interference fit for two-sided component alignment
• Heat-treated carbon steel variants gain balanced hardness to withstand frequent assembly and shear force wear
• Optional surface treatments like zinc plating, black oxide or stainless steel passivation fight rust in damp workshop environments

Product Application:

• Double-Ended Dowel Pin with Tab use for injection mold base alignment and guide pin mounting

• Automotive welding fixtures and assembly line tooling positioning

• Precision inspection jigs and CMM fixture locating references

• Heavy-duty furniture frame splicing and structural joints

• Any static positioning task requiring fixed alignment without spring retraction or floating movement