684ZZ Deep Groove Ball Bearing 4x9x4mm Double Shielded

• Manufacturer: Various
• Product ID: 684ZZ

These are just right for an M4 screw and are used in the P-51D pedestal and Mosquito throttle.

Supplier Links

https://www.amazon.co.uk/dp/B07FXXLRGD/ref=pe_27063361_487055811_TE_dp_1

Indicative Pricing With Allowance for P&P

The above link is for a pack of 20 but these aren't used much. I've seen them on eBay at £3 for four, so assuming you may use four the individual price is £0.75

£0.75

Substitutions

None found yet. There is probably a 2RS version that would be fine.