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Wire Lock Pin

Wire Lock Pin is a type of fastener that uses elastic steel wire deformation locking to achieve axial fixation by inserting the radial expansion force of pre bent steel wire into the groove of the hole wall. It belongs to the category of reusable quick release pins
  • Wire Lock Pin

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Features of Wire Lock Pin

Locking Pins Wire Retainer Title:

Locking Pins Wire Retainer D shape & Round Wire Lock Pin


Wire Lock Hitch Pin Introduction:

Wire Lock Pin is a mechanical fixing device that achieves locking through metal wire or spring mechanism, mainly used to prevent bolts, shaft pins and other components from accidentally falling off under vibration or load;

Lock Pin Material:Stainless Steel,Carbon Steel

Surface Treatment:Black Oxide,Colorful Zinc-Plated or passivated to improve corrosion resistance.

Pin Diameter:1/4”, 5/16", 3/8” and other standard sizes, supporting non-standard customization.


Pin Wire Lock Feature:

Design Form:

D-type: Round head design, paired with single or double line locking arm structure, providing stable locking force.

Square: Suitable for specific installation spaces, such as tool carts or ship accessories;


Structural composition: Made of high-strength spring steel wire (commonly 65Mn/304 stainless steel) bent into a U-shape or Ω shape, with symmetrical locking arms at both ends;


Surface treatment

Anti corrosion treatment: including galvanizing, Plain Oiled, Electroplating, Electrophoresis, etc., to enhance weather resistance and aesthetics;


Locking principle: When inserted, the steel wire is compressed and contracted → after reaching the lock hole, it expands elastically → the lock arm is inserted into the groove to form mechanical jamming;


Unlocking method: Pinch the locking arms on both sides to radially retract them, and then extract them axially;


Wire-Lock-Pin-01

Pin Dia.A Effective Length EL Shank Length SL Handle Style
Inch Metric Inch Inch R/S
1/4 6 1-3/4 2 Round
1-3/4 2 Square
2-1/4 2-1/2 Round
2-1/4 2-1/2 Square
2-1/2 2-3/4 Round
2-1/2 2-3/4 Square

Pin Dia.A Effective Length EL Shank Length SL Handle Style
Inch Metric Inch Inch R/S
5/16 8 1-3/8 1-5/8 Round
1-3/8 1-5/8 Square
1-3/4 2 Round
1-3/4 2 Square
2-1/4 2-1/2 Round
2-1/4 2-1/2 Square
2-1/2 2-3/4 Round
2-1/2 2-3/4 Square

Pin Dia.A Effective Length EL Shank Length SL Handle Style
Inch Metric Inch Inch R/S
3/8 10 1-3/8 1-5/8 Round
1-3/8 1-5/8 Square
1-1/2 1-3/4 Round
1-1/2 1-3/4 Square
1-3/4 2 Round
1-3/4 2 Square
2-1/4 2-1/2 Round
2-1/4 2-1/2 Square
2-1/4 2-1/2 Round
2-1/4 2-1/2 Square


Application:

Agricultural machinery: used for three-point suspension systems (PTO Pins) and fixing agricultural machinery axles.

Transportation equipment: Hitch pins, ship connectors, tool vehicle accessories.

Industrial sector: Track sales for construction machinery, critical components for rail transit safety;


Wire-Lock-Pin-02


Linch Pins Wire Lock Pin Advantage:

Self locking mechanism: Radial locking is achieved through the elastic deformation of pre bent steel wire, and the locking arm automatically inserts into the groove after insertion to prevent axial detachment.

Quick disassembly and assembly: simply pinch the locking arm to unlock without the need for tools;


Vibration resistance and load capacity:

The double line locking arm structure enhances the resistance to lateral impact and is suitable for high vibration scenarios such as engineering machinery tracks or aircraft panels;


D-type or circular double line winding structure enhances locking stability

Supports multiple aperture sizes such as D-shaped and circular, with fast installation and strong compatibility;

Galvanizing or passivation process enhances wear resistance and extends service life;


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