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Cross Dowels and Barrel Nuts 

M4, M5, M6, M8 and M10 Cross Dowels and Barrel Nuts 

Cross Dowels are also known as Barrel Nuts and Dowel Nuts. Cross Dowels are used to provide extremely strong joints and can be used in a variety of ways; including corner joints, framing and general flat pack furniture. They are ideal to use in conjunction with Furniture Connector Bolts.

They are a cylindrical shapes metal nut. One end of the cross dowel is usually slotted; this is to allow a flat head screwdriver to rotate the cross dowel so the threaded hole can be aligned with a bolt.

These Cross Dowel are not just used in the furniture industry, they extremely versatile and can be used in many sectors.

We stock these barrel nuts with various threads including M4, M5, M6, M8 and M10; these threads are available in the centre of the cross dowel or off centre.Off-Centre Threaded Cross Dowels are also refered to as Eccentric Cross Dowels and Centre threaded Cross Dowel are refered to Centric Cross Dowels. They are also stocked in a variety of lengths to suit all applications. We do also stock few Twin Hole Cross Dowels.

Headed Cross Dowels are also available

When choosing the correct cross dowel it is important to consider

- The Diameter of the Cross Dowel
- The Thread of the Cross Dowel
- The Position of the Thread on the Cross Dowel (centre or off centre)
- The Length of the Cross Dowel 
- The Finish of the Cross Dowel

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  1. M4 Cross Dowels/ Barrel Nuts - Various Length

    M4 Cross Dowels/ Barrel Nuts - Various Length

    Starting at £0.22 incl. VAT £0.18

    M4 Thread x Various Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  2. M5 Cross Dowels/ Barrel Nuts - Various Length

    M5 Cross Dowels/ Barrel Nuts - Various Length

    Starting at £0.24 incl. VAT £0.20

    M5 Thread x Various Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  3. M6 Cross Dowels/ Barrel Nuts - Various Length

    M6 Cross Dowels/ Barrel Nuts - Various Length

    Starting at £0.55 incl. VAT £0.46

    M6 Thread x Various Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  4. M8 Cross Dowels/ Barrel Nuts - Various Length

    M8 Cross Dowels/ Barrel Nuts - Various Length

    Starting at £0.82 incl. VAT £0.68

    M8 Thread x Various Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  5. M10 Cross Dowels/ Barrel Nuts - Various Length

    M10 Cross Dowels/ Barrel Nuts - Various Length

    Starting at £1.61 incl. VAT £1.34

    M10 Thread x Various Length
    Zinc Plated (ZP) | 16mm Diameter
    Quantity Discounts Available

  6. M4 x 12mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M4 x 12mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.22 incl. VAT £0.18

    M4 Thread x 12mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  7. M4 x 16mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M4 x 16mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.24 incl. VAT £0.20

    M4 Thread x 16mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  8. M4 x 20mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M4 x 20mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.26 incl. VAT £0.22

    M4 Thread x 20mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  9. M5 x 12mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M5 x 12mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.24 incl. VAT £0.20

    M5 Thread x 12mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  10. M5 x 16mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M5 x 16mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.26 incl. VAT £0.22

    M5 Thread x 16mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  11. M5 x 20mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    M5 x 20mm x Ø8mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.29 incl. VAT £0.24

    M5 Thread x 20mm Length
    Zinc Plated (ZP) | 8mm Diameter
    Quantity Discounts Available

  12. M6 x 12mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 12mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.55 incl. VAT £0.46

    M6 Thread x 12mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  13. M6 x 14mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 14mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.58 incl. VAT £0.48

    M6 Thread x 14mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  14. M6 x 14mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    M6 x 14mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    £0.58 incl. VAT £0.48

    M6 Thread x 14mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Off Threaded Centre
    Quantity Discounts Available

  15. M6 x 16mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 16mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.60 incl. VAT £0.50

    M6 Thread x 16mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  16. M6 x 16mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    M6 x 16mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    £0.60 incl. VAT £0.50

    M6 Thread x 16mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Off Threaded Centre
    Quantity Discounts Available

  17. M6 x 18mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 18mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.62 incl. VAT £0.52

    M6 Thread x 18mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  18. M6 x 18mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    M6 x 18mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    £0.62 incl. VAT £0.52

    M6 Thread x 18mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Off Threaded Centre
    Quantity Discounts Available

  19. M6 x 20mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 20mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.65 incl. VAT £0.54

    Quantity Discounts Available
    Below 100 units - £0.65 Each
    Over 100 units - £0.48 Each
    Over 500 units - £0.42 Each
    Over 1000 units - £0.30- Each

  20. M6 x 25mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 25mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.67 incl. VAT £0.56

    M6 Thread x 25mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  21. M6 x 30mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    M6 x 30mm x Ø10mm Cross Dowel / Barrel Nut - Off Centre Threaded

    £0.70 incl. VAT £0.58

    M6 Thread x 30mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Off Threaded Centre (20mm x 10mm)
    Quantity Discounts Available

  22. M6 x 30mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 30mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.70 incl. VAT £0.58

    M6 Thread x 30mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  23. M6 x 35mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 35mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.72 incl. VAT £0.60

    M6 Thread x 35mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  24. M6 x 40mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 40mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.74 incl. VAT £0.62

    M6 Thread x 40mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  25. M6 x 45mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 45mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.77 incl. VAT £0.64

    M6 Thread x 45mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Quantity Discounts Available

  26. M6 x 50mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    M6 x 50mm x Ø10mm Cross Dowel / Barrel Nut - Centre Threaded

    £0.96 incl. VAT £0.80

    M6 Thread x 50mm Length
    Zinc Plated (ZP) | 10mm Diameter 
    Quantity Discounts Available

  27. M6 x 60mm x Ø10mm Cross Dowel/ Barrel Nut - Twin Hole

    M6 x 60mm x Ø10mm Cross Dowel/ Barrel Nut - Twin Hole

    £2.16 incl. VAT £1.80

    M6 Thread x 60mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Twin Holes - 32mm Centres
    Quantity Discounts Available

  28. M6 x 82mm x Ø10mm Cross Dowel/ Barrel Nut - Twin Hole

    M6 x 82mm x Ø10mm Cross Dowel/ Barrel Nut - Twin Hole

    £2.40 incl. VAT £2.00

    M6 Thread x 82mm Length
    Zinc Plated (ZP) | 10mm Diameter
    Twin Holes - 64mm Centres
    Quantity Discounts Available

  29. M8 x 12mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 12mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.82 incl. VAT £0.68

    M8 Thread x 12mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  30. M8 x 14mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 14mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.84 incl. VAT £0.70

    M8 Thread x 14mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  31. M8 x 16mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 16mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.86 incl. VAT £0.72

    M8 Thread x 16mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  32. M8 x 18mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 18mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £0.94 incl. VAT £0.78

    M8 Thread x 18mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  33. M8 x 20mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 20mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.01 incl. VAT £0.84

    M8 Thread x 20mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  34. M8 x 25mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 25mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.09 incl. VAT £0.91

    M8 Thread x 25mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  35. M8 x 30mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 30mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.15 incl. VAT £0.96

    M8 Thread x 30mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  36. M8 x 35mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 35mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.22 incl. VAT £1.02

    M8 Thread x 35mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  37. M8 x 40mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 40mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.30 incl. VAT £1.08

    M8 Thread x 40mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  38.  M8 x 45mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 45mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.44 incl. VAT £1.20

    M8 Thread x 45mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  39. M8 x 50mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 50mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.58 incl. VAT £1.32

    M8 Thread x 50mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  40.  M8 x 60mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    M8 x 60mm x Ø12mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.73 incl. VAT £1.44

    M8 Thread x 60mm Length
    Zinc Plated (ZP) | 12mm Diameter
    Quantity Discounts Available

  41. M10 x 20mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    M10 x 20mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.61 incl. VAT £1.34

    M10 Thread x 20mm Length
    Zinc Plated (ZP) | 16mm Diameter
    Quantity Discounts Available

  42. M10 x 25mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    M10 x 25mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    £1.96 incl. VAT £1.63

    M10 Thread x 25mm Length
    Zinc Plated (ZP) | 16mm Diameter
    Quantity Discounts Available

  43. M10 x 30mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    M10 x 30mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    £2.11 incl. VAT £1.76

    M10 Thread x 30mm Length
    Zinc Plated (ZP) | 16mm Diameter
    Quantity Discounts Available

  44. M10 x 50mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    M10 x 50mm x Ø16mm Cross Dowel/ Barrel Nut - Centre Threaded

    £4.37 incl. VAT £3.64

    M10 Thread x 50mm Length
    Zinc Plated (ZP) | 16mm Diameter
    Quantity Discounts Available

Cross Dowels | Barrel Nut | Frequently Asked Question

Do you stock your cross dowels in the UK?

All our Cross Dowels in In-Stock in our London Workshop.

How to order REPLACEMENT Cross Dowels?

1) Check the diameter of the hole where the Cross Dowel
Usually
- M4 and M5 is 8mm in diameter
- M6 is 10mm in diameter
- M8 is 12mm in diameter
- M10 is 16mm in diameter
However; other diameters are available dependent on uses and manufacturers

2) Check whether the Cross Dowel is Centre Threaded or Off-Centre Threaded.

3) Measure the diameter of the Threaded Hole
o M4 is 4mm in diameter
o M5 is 5mm in diameter
o M6 is 6mm in diameter
o M8 is 8mm in diameter
o M10 is 10mm in diameter

What does M5, M6, M8 and M10 means?

M5, M6 and so on refers to the thread bar size and the thread pitch the cross dowel will accept.

Do you stock any other size Twin Hole Cross Dowels?

We only stock what is available online. If you cannot find the size you are looking for, you might be able to use two smaller cross dowels as an alternative.

What is the difference between Imperial and Metric Cross Dowels?

We only stock Metric Cross Dowels. This refers to diameter of the thread and the thread pitch of the cross dowel. If you require imperial cross dowels, they are much harder to find in the UK. You could consider also purchasing replacement bolts and moving across from Imperial to Metric.

My bolts only turn once or twice, then it stops. What’s is the issue?

You must have an Imperial Threaded Bolt. You should consider purchasing a replacement Metric Bolts.