CM Ultra-Thin Head Nylon Patch Anti-Loosening Screws

Nylon-patch locking screws that hold breakaway torque through several service cycles.

Key specifications

Installationelectric driver; no more than five reuses
StandardISO 2320 (prevailing torque fasteners)
Typical substratebattery packs, controllers, rail interiors
Key inspectionsprevailing torque, patch length, thread gauging
Head TypeUltra Low Profile / CD-textured
Surface TreatmentNylon patch / sealant pre-coating

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Product overviewOverview

Breakaway torque decays with each cycle because the patch takes some permanent set; after about five assemblies the locking effect is noticeably weaker. These screws therefore suit joints serviced a limited number of times. Where frequent disassembly is expected, use an all-metal locking feature or fit a new screw each time.

installed by electric driver; no more than five reuses.

Key featuresFeatures

Does not mark the clamped surface the way a toothed washer can.
Patch length and thickness selected to the required breakaway torque.
Stable performance for up to five assemblies; replace after that.
Elastic interference from the patch adds friction inside the thread pair.

Typical applicationsApplications

Motor controllers and on-board chargers
Rail interior and equipment brackets
Hydraulic lines on construction machinery

Selection notesSelection

Where preload must be precise, account for how the patch changes the torque-to-clamp-force relationship.

Frequently asked questionsFAQ

How do I specify the CM Ultra-Thin Head Nylon Patch Anti-Loosening Screws?

Where preload must be precise, account for how the patch changes the torque-to-clamp-force relationship. installed by electric driver; no more than five reuses.

What matters during installation of the CM Ultra-Thin Head Nylon Patch Anti-Loosening Screws?

Drive it with an electric screwdriver, and retire the screw after five uses. Does not mark the clamped surface the way a toothed washer can.

Specifications

Head Type	Ultra Low Profile / CD-textured
Surface Treatment	Nylon patch / sealant pre-coating
Standard	ISO 2320 (prevailing torque fasteners)
Installation	electric driver; no more than five reuses
Typical substrate	battery packs, controllers, rail interiors
Key inspections	prevailing torque, patch length, thread gauging

Manufacturing and inspection

Patch length and coverage are checked microscopically; threads gauged 100%.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.