Taper Pins & Spring Pins
Tapered and coiled spring pins that lock by interference rather than by torque.
Pins that hold by interference: a taper pin wedges into a reamed hole, a spring pin compresses into a drilled one. Neither needs torque, which is why they suit blind or hard-to-reach joints.
How we make it: Swiss CNC machining service →
3–5 weeks
500 pieces
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Diameter range | Ø1.5–Ø20 | mm |
| Taper | 1:50 | standard |
| Spring pin standard | DIN 1481 / ISO 8752 | - |
| Shear strength | High for the section | note |
| Reaming | Required (taper) | note |
| Hardness | To 60 | HRC |
Available Materials
- Steel 52100 (hardened)
- Stainless 420 / 1.4310
- Mild steel
- Brass
Typical Applications
- Gear and hub location
- Hinge pivots
- Handle attachment
- Sheet metal pivots
- Tool assembly
Surface Finishes
- Black oxide
- Zinc plating
- Passivate
- Phosphate
- None (stainless)
Industries Served
- Industrial Equipment
- Automotive & EV
- Agricultural Machinery
- Consumer Products
- Tooling & Mould Making
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Part size
- Diameter range at Ø1.5–Ø20 mm decides which machine the part lands on and how many setups it needs. Size is the driver buyers most often leave out of a first enquiry, and it is the one that changes the quote fastest.
- Material
- The first material listed, Bearing Steel 52100 (100Cr6), rates 4/10 on our machinability scale at 60–66 HRC hardened · 183–217 HB annealed. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 500 pieces, where setup and tooling are amortised across the batch and per-part cost settles around cycle time and material. Below that quantity the same part costs more per piece, not less.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Rockwell hardness tester on the part, not only against the mill certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Taper pin or spring pin?
- Taper for a permanent, precise location that will be reamed; spring pin where you want to drill and drive without reaming. A spring pin can also be removed and reused; a taper pin seats once.
Related part families
Dowel Pins & Locating Pins
Ground dowel and locating pins to m6/h6, hardened where the pin is also a wear surface.
Retaining Rings & Circlips
External and internal retaining rings in spring steel, sized to DIN 471/472 and checked for set.
Shoulder Bolts
Shoulder bolts ground to h9 on the shank, so the pivot is the shank rather than the thread.