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Anti-loosening Bolt locking for high-vibration equipment

Hex flange serrated pre-applied adhesive locking screw

MaterialHigh-strength alloy steelHead typeHex flangeSurface treatmentBlack oxide / zinc plated / zinc-nickel alloy
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Product description

Compiled from the existing technical description of this product on this site

The hex flange serrated locking pre-coated screw has radial serrations under the flange head; when tightened, the serrations bite into the mating surface and form a mechanical interlock, which together with the pre-applied thread adhesive gives locking on both the face and the thread. The flange also enlarges the bearing area, lowers the pressure on the bearing face and restricts settlement of soft substrates, which suits stable joints under high vibration.

Technical Features
The serrated flange face embeds into the substrate to form a mechanical interlock, resisting lateral slipPre-applied adhesive on the thread provides chemical locking as a second redundancyEnlarged flange face increases the bearing area and limits substrate settlement and crushingThe hex head takes standard wrenches and sockets, so tightening torque is easy to controlSerration angle, flange diameter and adhesive type can be customized
Applications
Around engines and gearboxesIndustrial robot joints and basesVibrating areas of construction machineryNEV electric drive assemblies

Specifications

The parameters listed on this page are subject to final inspection and the applicable standards; items not listed follow the customer drawing or the order agreement and are not committed by default.

Material High-strength alloy steel
Drive Hex flange
Head type Hex flange
Surface treatment Black oxide / zinc plated / zinc-nickel alloy (optional)
Standard Hex flange bolts, GB/T 16674 series; mechanical properties GB/T 3098.1 (ISO 898-1)
Typical application Bolt locking for high-vibration equipment

Spec lookup

Use your own operating conditions to look up the 21 models in this series directly - front-end filtering only, no redirects, no address change

Filter results are based on the specification fields published on each model page and are for preliminary screening only; the final selection must be confirmed in light of the actual load, plate thickness and assembly process.

Drawings & customization

No public catalogue is available for this series; drawing-based requests are handled per project.

2D

Made to drawing / sample replication

A 2D drawing or a physical sample is enough for evaluation; once confirmed, we issue drawings, build samples and obtain first-article approval before volume production. Drawings and project information are handled under confidentiality requirements.

Submit drawing request

Manufacturing process

The usual process route for this product family; actual operations follow the drawing and order requirements.

  • Body formingCold heading or turning
  • Anti-loosening structure machiningSerrated face, slotted, nylon patch or pre-applied adhesive
  • AssemblyScrew, washer and nut combined into one part
  • Heat treatmentQuenched and tempered metal body
  • Torque verificationSampling inspection of tightening and loosening performance

Capacity & delivery

Taken from the company's published capacity and certification information; no unverified claims are included.

6.5100M pcs/monthCombined monthly capacity of the Shenzhen and Xiangyang (Hubei) dual bases
As fast as 1-day prototypingFast prototyping channel after drawing or sample confirmation
26patentsPatents for fastening structures and assembly processes
3system certificationsIATF 16949 / ISO 9001 / ISO 14001

FAQ

Material, standards, surface treatment and installation points for this model; the data comes from the specification table on this page and from the national standards cited in the answers.

Q1What material is the hex flange serrated-face anti-loosening screw with pre-applied adhesive available in, and what strength level does it reach?

Marked in the specification table on this page: material is high-strength alloy steel. Material certificates and mechanical property test reports can be supplied with the goods; batch acceptance follows the data above.

Q2Which surface treatments are available for the hex flange serrated-face anti-loosening screw with pre-applied adhesive, and how to choose?

The specification table on this page lists surface treatments: black oxide / zinc plated / zinc-nickel alloy (optional). Different coatings differ in appearance, corrosion resistance and cost; choose according to the service environment and order agreement.

Q3Where is the hex flange serrated-face anti-loosening screw with pre-applied adhesive used?

Typical applications listed in the product description on this page: around engines and gearboxes; joints and bases of industrial robots; vibrating areas of construction machinery; new energy electric drive assemblies. Overview: the hex flange serrated locking pre-coated screw has radial serrations under the flange head; when tightened, the serrations bite into the mating surface and form a mechanical interlock, which together with the pre-applied thread adhesive gives locking on both the face and the thread.

Q4What are the head type, drive and structure of the hex flange serrated-face anti-loosening screw with pre-applied adhesive?

Specification table on this page: head type is hex flange; drive is hex flange. Structural details per drawing.

Q5What is the locking principle of pre-applied adhesive parts such as the hex flange serrated-face anti-loosening screw with pre-applied adhesive?

A viscoelastic adhesive layer is pre-applied to the threaded section. After the screw is driven in, the adhesive fills the gaps between the thread flanks and gives the thread pair continuous damping and adhesion, suppressing back-rotation. Residual locking capacity remains after re-assembly, but it decreases with the number of assembly cycles. The pre-application process follows the company standard; the thread is GB/T 196, GB/T 197 6g. (Applies to this model: “hex flange serrated locking pre-coated screw”.)

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