I bought a used Diawa CR80, and I need a 421-5020 HANDLE LOCK PLATE and 120-2020 screw. What's a good source for the lock plate? I could probably scrounge a screw if I could just get a lock plate.

Just go to the source

https://daiwa.us/pages/contact

9 hours ago, Bazoo said:

I bought a used Diawa CR80, and I need a 421-5020 HANDLE LOCK PLATE and 120-2020 screw. What's a good source for the lock plate? I could probably scrounge a screw if I could just get a lock plate.

You want something like this.  Lock plates/retainer can be picky and the hole for the screw in the plate needs to match the handle threaded screw hole location.  Even amongst real Daiwas there is a difference between reel handles like the Fuego CT with its short plastic cap and handles meant to have a long decorative color lock plate.  The CR80 isn't a real Daiwa so I have no idea what lock plate to use.  Luckily there are lock plates that have a slot instead of a hole and they will accommodate a handle with a screw hole anywhere on the lock plate slot.  You can also spend about double and get a cheap carbon fiber handle that comes with a nut, lock plate and screw as well as knobs obviously.

 

https://www.aliexpress.us/item/3256807961663116.html?

 

Amazon also has a slightly more expensive option too:

 

https://www.amazon.com/UCCKEYI-Baitcasting-Fishing-Locking-Compatible/dp/B0DDTGPGCW/ref=mp_s_a_1_6?

This looks like the cheapest option 

 

https://www.amazon.com/Fishing-Aluminum-Locking-Bearing-Accessory/dp/B0D8PV66DM/ref=mp_s_a_1_5?

29 minutes ago, Bigbox99 said:

You want something like this.  Lock plates/retainer can be picky and the hole for the screw in the plate needs to match the handle threaded screw hole location.  Even amongst real Daiwas there is a difference between reel handles like the Fuego CT with its short plastic cap and handles meant to have a long decorative color lock plate.  The CR80 isn't a real Daiwa so I have no idea what lock plate to use.  Luckily there are lock plates that have a slot instead of a hole and they will accommodate a handle with a screw hole anywhere on the lock plate slot.  You can also spend about double and get a cheap carbon fiber handle that comes with a nut, lock plate and screw as well as knobs obviously.

 

https://www.aliexpress.us/item/3256807961663116.html?

 

Amazon also has a slightly more expensive option too:

 

https://www.amazon.com/UCCKEYI-Baitcasting-Fishing-Locking-Compatible/dp/B0DDTGPGCW/ref=mp_s_a_1_6?

This looks like the cheapest option 

 

https://www.amazon.com/Fishing-Aluminum-Locking-Bearing-Accessory/dp/B0D8PV66DM/ref=mp_s_a_1_5?

 

I modify Shimano large handle and knobs assemblies to fit my daiwa reels. I have purchased these amazon nuts and locking bearing items and they work.