Hexalobular Socket Head P85 Anti-Loosening Screw

P85 pre-coated locking screws that keep a predictable breakaway torque through several service cycles.

Key specifications

MaterialStainless Steel / Brass
Installationelectric driver at the patch-rated torque
StandardGB/T 3098.1, ISO 2320 (prevailing torque)
Typical substratesmall modules, drones, sensors
Key inspectionsprevailing torque, patch coverage, thread gauging

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Product overviewOverview

The locking effect comes from filling the thread clearance: once cured, the layer raises breakaway torque and damps the micro-slip that bleeds preload. Since the coating sits only on part of the thread, the screw can still be removed and reused, but breakaway torque falls with each cycle, so five reuses is a practical ceiling.

Material: Stainless Steel / Brass. It is driven with an electric screwdriver.

Key featuresFeatures

The cylindrical head bears on a flat face, spreading clamp load where a plastic boss or a thin wall would otherwise yield.
Nickel plating suits general assembly, zinc-nickel is chosen for salt exposure, and stainless removes the plating step entirely.
Breakaway torque stays stable for up to five assembly cycles, after which replacement is advised.
The P85 patch is applied to a set thickness, which keeps the thread inside gauge limits so a go/no-go check still passes.

Typical applicationsApplications

Robot vacuum drive wheels and LiDAR housings
Compact gearboxes and encoder end caps
Automotive camera and sensor brackets

Selection notesSelection

For parts taken apart often, prefer the thin P85 film over a nylon-insert locking element.

Frequently asked questionsFAQ

How do I specify the Hexalobular Socket Head P85 Anti-Loosening Screw?

For parts taken apart often, prefer the thin P85 film over a nylon-insert locking element. Material: Stainless Steel / Brass. It is driven with an electric screwdriver.

What matters during installation of the Hexalobular Socket Head P85 Anti-Loosening Screw?

Drive it with an electric screwdriver set to the torque the patch is rated for. The cylindrical head bears on a flat face, spreading clamp load where a plastic boss or a thin wall would otherwise yield.

Specifications

Material	Stainless Steel / Brass
Sealing Method	Pre-applied sealant / O-ring
Standard	GB/T 3098.1, ISO 2320 (prevailing torque)
Head style	hex head
Installation	electric driver at the patch-rated torque
Typical substrate	small modules, drones, sensors
Key inspections	prevailing torque, patch coverage, thread gauging

Manufacturing and inspection

Patch coverage is checked under a microscope, and every part passes a thread gauge to catch coating build-up.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.