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0.6mm CM Ultra-Thin Head Serrated Micro Screw for Low-Clearance Riveted Joints

0.6 mm ultra-thin head micro screw with a serrated underside: the teeth bite the mating face instead of adding a separate locking washer.

0.6mm CM Ultra-Thin Head Serrated Anti-Loosening Micro Screw

Key specifications

Installationelectric or hand driver
StandardGB/T 3098.1 (mechanical properties), GB/T 197 (thread tolerance)
Typical substratephones, wearables, miniature modules
Key inspectionshead thickness, head diameter, thread gauging
Head TypeUltra Low Profile / CD-textured

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Product overviewOverview

These parts are cold-headed and thread-rolled. At a head thickness around 0.6 mm a spring washer no longer fits, so locking has to be built into the underside. The teeth crush the mating surface slightly on tightening, giving releasable mechanical interlock; repeated use is limited by tooth wear.

installed by electric or hand driver.

Key featuresFeatures

Locking teeth under the head replace the height a washer would need.
Head height 0.6–0.8 mm, allowing flush or slightly sub-flush installation in a machined counterbore.
Threads held to a 6g tolerance and gauged 100%, so automated feeding does not jam on pitch deviation.
Generous fillet between head and shank reduces cracking when torque is applied to a thin head.

Typical applicationsApplications

Camera modules and vibration motors
AR/VR headset temples and face-plate structures
Smartphone mid-frame and back-cover assembly

Selection notesSelection

Teeth only work when the mating face is softer than the teeth; on hardened steel use a nylon patch or pre-applied adhesive instead.

Frequently asked questionsFAQ

How many times can a serrated head be reused?

The teeth flatten with each cycle, so prevailing torque falls. Compare against the number of reworks the joint actually sees, and switch to a pre-applied adhesive beyond about three cycles.

What matters during installation of the 0.6mm CM Ultra-Thin Head Serrated Anti-Loosening Micro Screw?

Drive it with an electric or hand screwdriver. Locking teeth under the head replace the height a washer would need.

Specifications

Head Type	Ultra Low Profile / CD-textured
Standard	GB/T 3098.1 (mechanical properties), GB/T 197 (thread tolerance)
Installation	electric or hand driver
Typical substrate	phones, wearables, miniature modules
Key inspections	head thickness, head diameter, thread gauging

Manufacturing and inspection

Sampling follows GB/T 90.1. Threads are gauged 6g, head diameter and thickness are measured optically, and carburised parts are checked for case depth and surface hardness.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.