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Torx Cylinder Head PVD CD Texture Screws for Exposed Consumer-Electronics Housings

Torx cylinder head screw with a PVD CD texture: the concentric texture is formed before coating, so colour and pattern come out in one step.

Key specifications

Installationelectric driver, avoiding tip contact with the film
StandardGB/T 3098.1, GB/T 9791 (coating verification)
Typical substratevisible parts and wearables
Key inspectionsfilm thickness, colour, adhesion
Drive TypeTorx T
Head TypeUltra Low Profile / CD-textured

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Product overviewOverview

Physical vapour deposition builds the film in a vacuum chamber by evaporating or sputtering metal or ceramic onto the part. The CD pattern is a turned or pressed concentric texture that PVD covers conformally, producing a ring highlight that shifts with viewing angle. The film is micrometres thick, so thread fit stays on the original tolerance and no plating allowance is needed.

installed by electric driver, avoiding tip contact with the film.

Key featuresFeatures

Texture formed before coating; no machining after plating.
Film thickness 0.5–3 µm; thread gauging is identical to uncoated parts.
Vacuum deposition adds no hydrogen, avoiding a hydrogen-embrittlement risk.
Gunmetal, black, gold and blue finishes with controlled colour difference within a lot.

Typical applicationsApplications

Exposed screws on consumer electronics
Smartwatch case and strap attachments
Premium audio faceplates

Selection notesSelection

Approve colour against a master sample, since film thickness varies slightly between lots; never use a CD-textured face as a sealing face.

Frequently asked questionsFAQ

Can the CD-textured face act as a seal?

No. The concentric grooves leave channels, so a continuous sealing line cannot form. Sealing has to be moved to a plain face or to a pre-applied sealant.

What matters during installation of the Torx Cylinder Head PVD CD Texture Screws?

Drive it with an electric screwdriver, keeping the bit clear of the film. Texture formed before coating; no machining after plating.

Specifications

Drive Type	Torx T
Head Type	Ultra Low Profile / CD-textured
Surface Treatment	PVD Vacuum Coating (CD-textured / colored)
Standard	GB/T 3098.1, GB/T 9791 (coating verification)
Drive	star recess
Installation	electric driver, avoiding tip contact with the film
Typical substrate	visible parts and wearables
Key inspections	film thickness, colour, adhesion

Manufacturing and inspection

Film thickness is sampled by X-ray fluorescence or ball cratering; adhesion by cross-hatch or scratch test.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.