Technifast supply linch pins in mild steel, with spring steel clips and finished in zinc with yellow chromate or in stainless steel 304.  As well as our standard linch pin range, we can custom manufacture linch pins, hitch pins and apple keep pins to a customer drawing or specification. Contact us for a quote.

Linch pins are precision fasteners used to prevent a wheel or other part from sliding off the axle upon which it is riding. Linch pins, also commonly termed as quick release pins, employ a locking ring into the pin design that fastens the pin in place, and are commonly found on trailers, making them ideal for use in agricultural or marine industries.



  • Mild Steel (finished on zinc with yellow chromate)
  • Stainless Steel 304 with spring steel clips
  • Special finishes also include GEOMET® - suitable for high tensile fasteners


  • Linch pins may also be used in place of an R-Clip for securing hitch pins.
  • Linch pins are also known as apple keep pins.

Linch Pins - Size Ranges


Pin Diameter 'd' in mm     Pin Diameter 'd1' in mm     Pin Length 'l' in mm    
4.5*     4.5     42    
6*     6.0     42    
7.0     6.0     42    
8.0     7.0     42    
9.0     7.5     42    
10.0     8.0     42    
11.0     9.0     42    


* In pin sizes 4.5 and 6 mm, there is no flat so ‘d’ is the same as ‘d1’