Cold Formed Stepped Locating Pin – High Strength Steel Dowel Pin for Car Seat Adjustment

Product Description:

The Cold Formed Stepped Locating Pin – High Strength Steel Dowel Pin for Car Seat Adjustment from Qimao Metal Manufacturer starts as coiled wire rod, fed into a cold header. The forming happens in three stations – extrudes the pilot diameter, then the shoulder, then trims the length. No material is cut away, which matters because the grain flow follows the contour. That gives us a stronger part for the weight.

After forming, we tumble them to deburr. Then through a hardening furnace, oil quench, then temper back to about 38-42 HRC. Not too hard – you don’t want brittle. The locating diameters get centerless ground, holding a tolerance we can keep at ±0.02mm runout. Surface finish runs around Ra 0.8, sometimes smoother if the customer asks.

The pilot end has a slight chamfer – enough to guide into the slot without scratching the stamped steel. We oil dip them before packing, just a light rust preventive. Nothing fancy, but it survives the container ride.

Specification:

Products Details:

The Cold Formed Stepped Locating Pin – High Strength Steel Dowel Pin for Car Seat Adjustment dimensions vary depending on the seat model, but the basic geometry stays consistent. You’ve got a pilot diameter that guides into the rail slot, then a larger locating shoulder that acts as the physical stop during adjustment travel. We form these on cold headers – nothing special about the machines, but the tooling setup is where the experience matters. The grain flow follows the profile, so you don’t get the weakness you’d see on a machined part where the cutter breaks the fibers. After forming, they go through a mesh belt furnace, oil quench, temper back. Hardness ends up around 38-42 HRC. Not too high – if you go harder, they get brittle under impact loads. Centerless grinding cleans up the locating diameters to about 0.8 Ra, sometimes a bit finer. Runout we hold under two hundredths. We check them on an optical sorter before packaging, so the box won’t contain any surprises.

Product Feature:

• The Cold Formed Stepped Locating Pin – High Strength Steel Dowel Pin for Car Seat Adjustment takes the load when the seat hits the end of its travel. No deformation even after 50k cycles – we tested it.

• That lead-in chamfer saves your assembly guys time. No fiddling around, just drops in.

• Cold forming work-hardens the OD. So the contact surface stays smooth, doesn’t gall against the rail.

• Dimensional consistency from piece to piece. We run optical sorters, so you won’t find a stray one in the box.

Product Application:

• Power seat tracks – the Cold Formed Stepped Locating Pin – High Strength Steel Dowel Pin for Car Seat Adjustment stops the rail from over-traveling.

• Manual sliders – works as the pivot point.

• Folding seat latches – used where the lock mechanism engages.

• Some customers put them in sunroof tracks too – but this just needs extra processing to adjust the dimensions for fitment.