RTC613 | Plain Washer - 5/16 UNF, 5/8 OD | Defender, Discovery 1, Range Rover Classic
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: RTC613 - Plain Washer - 5/16 UNF (5/8 OD)
RTC613 is a plain washer for 5/16 UNF bolts with a 5/8 inch outer diameter. Fitted beneath bolt heads or nuts, it spreads clamping loads and protects mating surfaces to reduce localised deformation and wear. It is used across Series vehicles, Defender (to 2006), Discovery 1 and Range Rover Classic applications where a 5/16 UNF fixing requires a flat washer.
Compatibility
- Series
- Defender (1987-2006)
- Discovery 1 (1989-1998) - From VIN FA393361 to WA799999
- Range Rover Classic (1986-1991) - To VIN HA610293
- Range Rover Classic (1992-1994) - From VIN JA610294
Frequently Asked Questions
RTC613 is a plain washer for 5/16 UNF fasteners that provides a flat bearing surface beneath a bolt head or nut to spread clamping loads and protect mating surfaces. It helps prevent localised crushing and reduces the risk of fastener loosening caused by surface damage. Replace if it becomes deformed, corroded or no longer sits flat.
| Model | Variant |
|---|---|
| Land Rover Series | Various |
| Land Rover Defender (1987-2006) | Heatshield (3.5L V8 Twin Carb Petrol); Exhaust Manifold (4.0L V8 L/R EFI Petrol) |
| Land Rover Discovery 1 (1989-1998) | Bodyside Outer Panels; Rear Side Door Assembly; Exhaust Manifold (3.5L V8 Twin Carb Petrol); Exhaust Manifold (V8 EFI Petrol); Steering Column Top Support - From VIN FA393361 to WA799999 |
| Land Rover Range Rover Classic (1986-1991) | Various body, steering and exhaust components - To VIN HA610293 |
| Land Rover Range Rover Classic (1992-1994) | Various body, steering and exhaust components - From VIN JA610294 |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Inspect RTC613 during routine maintenance and replace if it shows signs of corrosion, cracking, flattening or other damage that prevents a secure, flat bearing surface. For critical or high-load fastenings consult the vehicle manual or a technician for replacement intervals.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.