The genuine Royal Enfield Ring Nut — Part No. 594287/C secures the steering stem / casquette stack on select models. The official catalog lists 594287/C as “RING NUT” (OE) and shows this nut in the Himalayan 410 Euro 4 steering stem diagram (item “RING NUT 594287A” — same family). It’s also used on the Continental GT 535 Euro 3/Euro 4 steering stem per the model diagrams. Being OEM, the thread pitch, chamfer, height and face profile match the factory yoke/washer set so preload and steering feel are correct—no galling, no loosening, no guesswork. 

Use when you’re refreshing head bearings, replacing a damaged nut, or returning a custom front end to stock. To reduce returns, order only for the models confirmed below or where your VIN microfiche explicitly lists 594287 (any suffix). 

Key Features

• OE identity: 594287/C = “RING NUT” (Royal Enfield genuine part). 

• Catalog-proof fitment on Himalayan 410 Euro 4 (steering stem diagram). 

• Diagram-listed on Continental GT 535 Euro 3/Euro 4 steering stem. 

• Correct thread & height for factory bearing preload; no spacer hacks.

• Matches OE finish and hardness for long service life.

• Ships in original RE packaging with traceable part number. 

Compatibility Table 

Also Fits Thunderbird Models (Check PartNumber)

FAQs

1) Will 594287/C fit my Himalayan BS6 or Scram 411?
Not published on those fiches we checked today. Confirmed is Himalayan Euro 4. For BS6/Scram, order strictly by your VIN fiche. 

2) Does it fit 650 Twins or J-series 350s?
No

3) Is this the top yoke locknut?
It’s the ring nut within the steering stem/casquette stack (per the diagram). Use with the correct lock nut/washer per your fiche. 

4) Any installation tips?
Set bearing preload per the service manual, rotate the bars lock-to-lock to settle the bearings, then re-check torque after a short test ride.

5) What if my fiche shows 594286 (lock nut) as well?
Order both if required—594286 is a distinct lock nut in the same stack on Himalayan; do not substitute.