The 6 Stages Of Making A Koken Socket

Koken Sockets have a 6 stage process of manufacture. Here’s why they stand out as the best over all the rest…

The Koken Process Stage 1

The Socket Process - Stage 2

The Socket Process - Stage 3

The Socket Process - Stage 4

The Socket Process - Stage 5

The Socket Process - Stage 6

{ 14 comments… read them below or add one }

Richard September 17, 2013 at 20:12

Hi I have a spark plug socket (3300s) which is missing the rubber insert to hold the insulator, is it possible to obtain a replacement? Thank you Richard


admin October 4, 2013 at 13:20

Hi Richard… is it….?

possible to get the rubber insert…?

Unfortunately not anymore, Koken switched to the much more effective Clip system (3300c)

How long did you have the old rubber one for?


Steve November 6, 2012 at 13:16


I need to replace a couple of lost sockets – 3412M and 3418M. Can you tell me if they are available



Steve Dale June 14, 2012 at 21:51

Hi I am looking for either a 1′ drive IN19 socket (prefer impact) or a 3/4 drive torque wrench capable of 1100lb any sugestions?


chris June 5, 2012 at 11:58

Hi from Palmerstion North.

I have a Koken 4749N-380 Ratchet 1/2 Drive.

Can i have the purchase code for a replacement 1/2 ratchet drive. In the head of the ratchet.

I hope i have explained this well enough..

TRH Services Ltd.
North Range Road.
Palmerston North.


Mike February 6, 2012 at 03:32

I am also trying to locate a 7mm Double square (Bi-square) socket. Do you do them?


Cory Williamson January 31, 2012 at 13:17


I see you make 1/4 inch drive sockets to aeronatical standard but, I can’t see this standard for 3/8, is there such thing?
What is the difference between the 2?



Gavin January 9, 2012 at 08:02

Have 2 questions.
1. Do you have Double square sockets. If so do you have a 7mm or 9/32″?
2. Am trying to find a 1/2″ female to 3/4″ male adapter, one that takes up little room. Like a sleeve with a collar so 3/4″ male slides into a 3/4″ Dr socket and then the 1/2″ Dr rachet can turn the 3/4″Dr socket. We have very limited room to fit the ractchet in. Also for using a torque wrench.


Ian October 23, 2011 at 11:10

Hello, I don’t see the 4210AM set listed. Has it been dropped? With the 4210AM set why did Koken not make the compartments fit the sockets properly? The 11/4″ socket has to sit in amongst the accessories and the smaller sockets have way too much space and tip over when the set is being carried by the handle. I’m not really complaining. I’ve used Koken for many years and experience tells me they’re the best. I always thought the 4210AM a quirky set and wondered why the company could not quite sort out the spacing.
Regards Ian


admin October 25, 2011 at 06:58

Dear Ian,

The 4210AM was a comprehensive set – including speed handle. The weight was considerable and the all metal case meant that that there was no possibility of a plastic insert breaking, however it did compromise the layout. Believe it or not the 4210AM socket set is still available and has been in production for as long as I can remember – at least 20 years – but I am certain that it is much longer than this.

As an aside – most Koken socket sets use an ABS plastic insert which is very tough and durable. If an insert should happen to break, we have replacements available – even for sets that are over 30 years old. It’s part of the Koken commitment to provide “high performance tools of convincing quality”.


Remco Numan
General Manager


Wei August 23, 2011 at 22:54

What’s the difference between 1/4″ sq. 12-point sockets (inch) 2405A and AS2405A?


admin August 24, 2011 at 07:48

Hi Wei,

The AS2405 is for the Aviation Industry – AS standing For Aero-Space .

Does This answer your question?


Matthew Rencher July 17, 2011 at 13:17

Hello, is it possible to buy replacement parts to my socket set which i lent to a cousin and the full set never returned :( ?


admin July 18, 2011 at 08:40

OUCH… a common story Matthew … More people need to replace components through loss or theft than because of breakage… I feel your frustration!!!

The good news is YES, you can replace those components, there are distributors throughout NZ, we’ll find the right one for you!!!

Thanks for stopping by :)


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