Shoulder Step Pin Manufacturer Custom Sized Steel Locating Dowel for Fixtures & Automotive

Product Content:

The Shoulder Step Pin Manufacturer Custom Sized Steel Locating Dowel for Fixtures & Automotive  designs from Qimao Metal Manufacturer here is straightforward – a stepped profile with a shoulder that acts as a positive stop against the fixture face, so your workpieces or components locate consistently every cycle. We use steel as the base material, with hardness and surface finish adjusted to suit the duty level of your application. Cold heading gives us a denser structure around the shoulder fillet, which matters because that is where these pins often fail under repeated impact. Dimensional accuracy is held to standard class fits, and we can hold tighter if your assembly demands it. Each batch gets checked for straightness, diameter, and shoulder squareness before we release it, nothing leaves our shop without a sign-off on those three points. Surface coatings like zinc or phosphate can be added for corrosion resistance, though many customers just run them with a light oil film and they perform fine.

Product Specification:

Technical Details:

As Shoulder Step Pin Manufacturer Custom Sized Steel Locating Dowel for Fixtures & Automotive getting into the specifics – shoulder diameter, pin diameter, and overall length all follow your print. We do not push standard sizes on custom jobs, so whatever your drawing shows, we work from that. The shoulder face is machined flat and square to the pin axis – if that shoulder sits crooked, your locating position shifts and the fixture loses accuracy. The pin body is held to a consistent diameter along its full length, no taper or bellmouth at the ends. Radius at the shoulder junction is controlled to avoid stress risers, a detail that matters more than most people realize when the pin sees side loading. Surface finish on the bearing portion typically runs between 0.8 to 1.6 Ra – smooth enough to slide easily but not so polished that it picks up galling under pressure. We can add a lead-in chamfer at the tip for smoother insertion, especially on automated lines where any hang-up slows the operation.

Core Advantages:

• Shoulder Step Pin Manufacturer Custom Sized Steel Locating Dowel for Fixtures & Automotive one-piece cold headed construction – no welded or brazed joints that could separate under load, which matters when these pins see repeated shock from fixture clamping.

• The shoulder face is ground square to the pin axis within a tight tolerance. We check every batch because we have seen what happens when that face runs out – locating drift that throws off entire machining setups.

• Grain flow around the shoulder radius stays intact from the cold forming process. This gives better fatigue resistance than machined pins, especially in applications where side loading is present.

• Dimensional consistency from piece to piece. Production runs hold within a narrow spread, so replacement pins drop in without adjusting your fixture stops or re-indicating positions.

• Steel grade and hardness can be adjusted to suit your application – softer for easy replacement, harder for longer wear in abrasive conditions. Surface finishes range from as-formed to ground or coated.

• Custom sizing across all parameters – shoulder diameter, pin diameter, overall length, and shoulder position – all made to your exact drawing, not a modified standard.

Wide Usage:

• Shoulder Step Pin Manufacturer Custom Sized Steel Locating Dowel for Fixtures & Automotive – positions engine blocks, transmission housings, and suspension components during machining or welding. Gives you the same locating point every cycle. If it wears, surfaces drift and scrap piles up – we have seen that with cheaper pins.

• CNC machining jigs – positions castings or forgings so the machine takes the same cut every cycle. If the pin shifts, finished parts drift out of spec and rework costs climb fast.

• Inspection and gauging fixtures – acts as a reference point for probes or sensors. The shoulder gives a fixed stop, so readings stay consistent across different operators and shifts.

• Aerospace assembly tooling – locating points for skin panels and structural frames during riveting. Tolerances there are tighter, so we pay extra attention to squareness and finish on these jobs.

• General industrial automation – pick-and-place stations, pallet locating, and transfer fixtures. Anywhere a part needs to stop in the same position every time, this pin does the job.

• Welding and fabrication tables – quick-change locating for weldments that need repeatable setup. The shoulder keeps the pin from pushing through, so workpiece height stays consistent batch to batch.