Product Center · Pre-applied Adhesives

Hex Flange Serration Screw Combining Serrated Locking and Adhesive Sealing

Hex flange screw with serrated flange and pre-applied adhesive: teeth resist loosening while the adhesive seals the bearing face.

Hex Flange Serration Screw with Dual-Lock Vibration Proofing

Key specifications

Installationtorque wrench with teeth facing the clamped part
StandardGB/T 3098.1, ISO 16130 (transverse vibration)
Typical substratechassis, structures, construction machinery
Key inspectionstooth form, locking performance, hardness
Head TypeFlange
Head styleflanged

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Product overviewOverview

Tooth direction matters. The serrations provide mechanical resistance to rotation and the adhesive provides sealing; the two work on the same face but for different failure modes. Serrations alone do not seal, because the tooth pattern leaves channels, and adhesive alone does not resist vibration once cured.

installed by torque wrench with teeth facing the clamped part.

Key featuresFeatures

Teeth lock, adhesive seals: neither replaces the other.
Large flange area lowers bearing stress on thin panels.
Can be combined with a thread patch for locking at both the thread and the bearing face.
Quenched and tempered steel or stainless, with zinc-nickel or black oxide finishes.

Typical applicationsApplications

Construction machinery structures
Rail equipment brackets
Wind turbine and tower fittings

Selection notesSelection

Unidirectional teeth must face the load direction; reversing them cancels most of the locking effect.

Frequently asked questionsFAQ

Do the serrations break the adhesive seal?

They do not, provided the adhesive is applied across the full flange and the teeth are shallow. Deep teeth can channel the adhesive and leave an unsealed path, which is why tooth depth is specified.

What matters during installation of the Hex Flange Serration Screw with Dual-Lock Vibration Proofing?

Seat the teeth against the clamped part and tighten to the specified torque. Teeth lock, adhesive seals: neither replaces the other.

Specifications

Head Type	Flange
Standard	GB/T 3098.1, ISO 16130 (transverse vibration)
Head style	flanged
Installation	torque wrench with teeth facing the clamped part
Typical substrate	chassis, structures, construction machinery
Key inspections	tooth form, locking performance, hardness

Manufacturing and inspection

Locking performance is verified by transverse vibration testing to ISO 16130 or the customer specification.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.