Contact Now

Products Center

Primary Category:

Secondary Category:

Product Center · Key-Locking Thread Inserts

Hex Flange Serration Screw with Dual-Lock Vibration Proofing

The same serrated hex flange screw listed under the thread insert range, where it is used to lock inserts and studs rather than to seal.

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

Request a quote Request samples

Product overviewOverview

A serrated flange locks by engagement rather than by friction. In this application the teeth matter and the adhesive is secondary: the screw holds a threaded component against rotation, so the locking face is the flange underside and the joint is opened during service. Releasability is therefore part of the specification.

installed by torque wrench with teeth facing the clamped part.

Key featuresFeatures

Used here for locking, so releasability is part of the specification.
Quenched and tempered steel or stainless, with zinc-nickel or black oxide finishes.
Serrated flange presses into the clamped part for mechanical locking.
Unidirectional and bidirectional tooth patterns for different load directions.

Typical applicationsApplications

Rail equipment brackets
Wind turbine and tower fittings
Industrial pumps and compressors

Selection notesSelection

Avoid serrated flanges on visible or thin panels: the impressions affect appearance and flatness.

Frequently asked questionsFAQ

Is this screw reusable in an insert application?

It can be, provided the teeth still stand proud and the adhesive is renewed. Once the teeth are flattened the locking performance drops even though the screw still tightens.

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. Used here for locking, so releasability is part of the specification.

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

Hardness and tensile strength follow GB/T 3098.1; plating to GB/T 5267.1.Material certificates and dimensional records accompany each lot; material and dimensional records are supplied per batch.

Professional consultant team online, ready to provide solutions for you