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Captive Screws
Captive panel screws that stay attached to the cover when it
High-Precision Captive Screws
- MaterialCarbon Steel / Stainless Steel
- Installationpanel mounted with the screw retained
- StandardGB/T 90.1, customer drawing
- Typical substratepanels and access covers
- Key inspectionsretention load, spring fatigue, thread gauging
Product overviewOverview
A captive screw is restrained on the panel by a retaining ring, a shoulder or a pressed sleeve: it can move axially but cannot come free, so removing a cover never leaves a screw on the floor. Spring-loaded versions push the panel away as the screw is released, giving fingers room to grip.
Material: Carbon Steel / Stainless Steel. The panel is mounted with the screw retained in the ferrule.
Key featuresFeatures
- Ring or shoulder retention keeps the screw with the panel.
- Spring-loaded versions lift the panel for easier removal.
- Thread size and length set by panel thickness and required engagement.
- Cross, star or slotted drives to match field tools.
Typical applicationsApplications
- Server and telecom faceplates
- Industrial access covers
- Instrument housings
Selection notesSelection
Panel thickness decides the retention style: pressed sleeve for thin panels, ring for thicker ones.
Frequently asked questionsFAQ
How do I specify the High-Precision Captive Screws?
What matters during installation of the High-Precision Captive Screws?
| Material | Carbon Steel / Stainless Steel |
|---|---|
| Type | Captive screw |
| Standard | GB/T 90.1, customer drawing |
| Installation | panel mounted with the screw retained |
| Typical substrate | panels and access covers |
| Key inspections | retention load, spring fatigue, thread gauging |
Retention pull test: the screw must not separate under the specified axial load.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.
