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Anti-loosening Anti-settlement locking fastening for soft substrates

Spline Nylon Washer

MaterialHigh-strength alloy steelSurface treatmentBlack oxide / zinc plated
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Product description

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

The anti-settlement lock nut assembly uses an integrated combined structure with an extra-large bearing flange, significantly reducing the surface pressure transmitted by the thread pair to the substrate and effectively suppressing creep settlement in soft base materials such as plastics and aluminum. Combined with locking threads or indentation features, it continuously provides lateral locking force under severe vibration.

Technical Features
One-piece large flange bearing face spreads the pressure and limits substrate settlementLocking thread or indented feature resists vibration-induced rotationPre-assembled at the factory, so washers do not come loose or get left outOne-piece cold heading gives good coaxiality and face squarenessFlange diameter and locking type made to drawing
Applications
Joints in die-cast aluminum partsPlastic housings and interior partsBattery pack and power-electronics enclosuresSoft substrate joints in vibrating environments

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
Process Cold heading
Surface treatment Black oxide / zinc plated (optional)
Standard Hex nut GB/T 6170 (ISO 4032); captive assembly and crimp structure per company standard / drawing
Typical application Anti-settlement locking fastening for soft substrates

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 captive anti-loosening anti-settlement nut 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.

Q2To which standard is the captive anti-loosening anti-settlement nut produced and accepted?

Standards specified in the specification table on this page: hex nuts GB/T 6170 (ISO 4032); assembly and indentation structures per corporate standard / drawings. Dimensional inspection reports can be supplied with delivery; batch acceptance follows the above standards and the drawings agreed by both parties.

Q3Which surface treatments are available for the captive anti-loosening anti-settlement nut, and how to choose?

Surface treatment marked in the specification table on this page: black oxide / zinc plated (optional). Each coating differs in appearance, corrosion resistance and cost; choose according to the service environment and order agreement.

Q4Where is the captive anti-loosening anti-settlement nut used?

Typical applications listed in the product description on this page: joints on aluminium die castings; plastic housings and interior parts; battery packs and electronic control housings; joints of soft substrates under vibration. Overview: the anti-loosening anti-settlement nut assembly uses an integral assembly structure with an oversized bearing flange, which markedly reduces the unit pressure transmitted from the thread pair to the substrate and effectively restricts creep settlement of soft substrates such as plastics and aluminium parts.

Q5What has to be observed when installing the serrated-face locking structure of the captive anti-loosening anti-settlement nut?

The teeth under the head or on the washer face bite into the surface of the clamped part, increasing contact friction and restricting relative micro-movement. During installation the teeth must contact the clamped part directly; a plain washer should not be placed between the teeth and the plate surface, otherwise the locking structure is isolated and becomes ineffective. This item explains the mechanism; verification follows the DIN 65151 transverse vibration test. Data for this model are given in the specification table on this page. (Applies to this model: “anti-loosening anti-settlement nut assembly”.)

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