Spring Locating Pin (Long Press-Fit)
Spring Locating Pin (Long Press-Fit), Carbon Steel, oil-coated, rust preventive, for sheet metal assembly, lightweighting.
| Installation Method | Cylindrical press-fit, no thread |
|---|---|
| Overall Length | 12.25±0.25 mm |
| Sleeve OD | Ø6.50±0.02 mm |
| Pin Diameter | Ø3.80±0.03 / Ø3.95±0.05 mm |
| Pin Lead Angle | 23° |
| Spring Force | 10±3 N |
| Sleeve Material | 42CrMo 39~44HRC |
| Pin Material | 20MnCr5 Case-hardened 58~62HRC |
Overview
Spring pins and spring locating pins hold parts by radial spring force rather than by thread or head. A slotted tubular pin compresses as it enters the hole and presses outward on the bore wall, so the pin stays in place without a secondary operation and can be removed without damaging the hole. This listing: pin dia. Ø3.80±0.03 / Ø3.95±0.05 mm, spring force 10±3 N, installation method Cylindrical press-fit, no thread, finish oil-coated, rust preventive.
What sets this listing apart: Overall Length 12.25±0.25 mm; Pin Lead Angle 23°.
Advantages
Removable without damaging the bore, so the joint can be serviced where a press-fit dowel would have to be drilled out.
Installation needs no tapping or threading, removing operations and tooling from the assembly sequence.
Radial compliance absorbs hole tolerance and slight misalignment, which rigid dowel pins cannot do.
Applications
Hinge and pivot locations, locating of fixture plates, retaining of covers and collars, and any joint that needs a removable, tolerance-absorbing locating element.
Spring force and hole tolerance are the two parameters that decide retention; specify both. A pin selected only by diameter may hold in a tight hole and fall out in a loose one.
Product information is supplied by Toprecision. Custom parts can be produced to drawing — contact us for samples or a quotation.
Specifications across this series
3 parts in this series
| Part | Pin Diameter | Overall Length | Sleeve Material | Pin Material |
|---|---|---|---|---|
| Spring Locating Pin M8thread installation Type · Ø2.5±0.025 mm / 14.5±0.25 mm | Ø2.5±0.025 mm | 14.5±0.25 mm | — | — |
| Spring Locating Pin short Type Ø3mm Steel 42CrMo · Ø2.65±0.05 mm / 12.25±0.25 mm / 42CrMo 39~44HRC | Ø2.65±0.05 mm | 12.25±0.25 mm | 42CrMo 39~44HRC | SUJ2(GCr15) 50~54HRC |
| Spring Locating Pin long Type Ø6.5mm Pin Case-hardened · Ø3.80±0.03 / Ø3.95±0.05 mm / 12.25±0.25 mm / 42CrMo 39~44HRC | Ø3.80±0.03 / Ø3.95±0.05 mm | 12.25±0.25 mm | 42CrMo 39~44HRC | 20MnCr5 Case-hardened 58~62HRC |
Values are taken from each part’s own attribute set. Changing length, material or finish changes pull-out strength and installation torque, so compare the row that matches your drawing.
Selection and test data: engagement length, standards, salt-spray hours
FAQ
What are the key dimensions of this part?
Installation Method Cylindrical press-fit, no thread, Overall Length 12.25±0.25 mm, Sleeve OD Ø6.50±0.02 mm, Pin Diameter Ø3.80±0.03 / Ø3.95±0.05 mm.
What material and finish is it supplied in?
42CrMo 39~44HRC; 20MnCr5 Case-hardened 58~62HRC; oil-coated, rust preventive.
What should I verify before ordering or installing it?
Spring force and hole tolerance are the two parameters that decide retention; specify both. A pin selected only by diameter may hold in a tight hole and fall out in a loose one.