Metal Pins for Moving and Aligned Parts
Printed hinges and pivots wear quickly when plastic rubs on plastic. A polished stainless pin gives a smooth, strong axle that lasts, and the same pins make accurate alignment features for multi-part prints.
Hinges and Axles
Use a pin as the pivot for boxes, lids, clamps and folding mechanisms, with a clearance hole in one part and a snug hole in the other.
Alignment and Detents
Press pins into one half of a split print to register the other half precisely, or use them as detents and stops in sliding parts.
Polished Stainless Steel
SS304 stainless pins with a polished finish resist corrosion and run smoothly against printed plastic.
Kit Details
Full Kit Contents
Every item is picked from our regular stock, so you can top up any size from its own product page.
Design Tips
Hole sizes for a press fit or a free running fit vary between printers, filaments and settings. Print a small test block with a few hole sizes around each pin diameter and use the one that gives the fit you want.
For hinges, make the hole in the moving part slightly larger so it turns freely, and the hole in the fixed part snug so the pin stays put.
Frequently Asked Questions
What are the pins made from?
SS304 stainless steel with a polished finish.
Can I buy more of one size?
Yes. Every diameter and length is available individually from our stainless pin listing.