50336 - M6 x 35mm T-track bolt (Important - click to read pop up)

Important: Please note that this is a fine thread bolt, used on certain Thule bike carriers because their 'cam' fixing system needs fine adjustment. These T-track bolts are not suitable for use with roof boxes, which use standard thread M6 or M8 bolts (standard thread is used because you just turn the wing nuts until they are tight).

We sometimes see these bolts being recommended on forums for use with roof boxes. They are not suitable - they will wreck the wing nut threads the first time they are used, if they can be tightened on at all. If you want a set of roof box T-track adapters for 20mm roof bar slots, we suggest our part number ATT1 which is a set of 4 x M8 T-track bolts with M8 wing nuts and 50mm washers to spread the load away from the immediate hole or slot in the base of the roof box.

If you have wider slots, as often used on BMW roof bars, then you need a set of our part number ATT2.

Some roof bars have even wider T-tracks, notably also many motorhome longitudinal T-track rails. Please e-mail a picture to [email protected] and we'll let you know if we can help.

To buy a QTU50336 bolt please close this popup, choose it in the spare parts list and change the quantity in the Shopping Basket.

Delivery charges and arrangements:

We charge a contribution towards delivery costs, depending on what you order, where you live, and how quickly you want the goods.

These are our standard charges; there are usually surcharges for all offshore destinations and some remote postcodes - for details please see our delivery information page.

Delivery of other items

Delivery times

Delivery times are calculated in working days (Monday to Friday, excluding Bank holidays).

Cut-off times for Express Delivery orders
Express Delivery orders placed before before the cut-off times shown below will usually be desptached on the date of order. Express Delivery orders placed after these cut-off times will be despatched the next working day.

Delivery FAQs

When will my order arrive?
There are no deliveries on Saturdays, Sundays or Bank Holidays, except for postable items where Royal Mail has a Saturday delivery. Express Delivery orders placed on a Friday (before 1pm) should be delivered on the Monday or Tuesday, Express Delivery orders placed on a Saturday or Sunday should be delivered on the Tuesday or Wednesday. The arrangements for Very Heavy Items are different and are shown above.

What about Next Working Day delivery?
Most Express delivery orders will arrive on the next working day, if the order is placed before the cut-off time (see above). Some will arrive on the second working day if there has been a "split-delivery". So-called “split deliveries” happen when the couriers do not have enough trailer space for everything that should be moved around the UK, so they will load what they can and leave the rest for the next trailer.

Is my delivery day guaranteed?
No retailer or courier company can ever "guarantee" a Next Working Day delivery. As well as split deliveries, all courier companies occasionally have the same transport problems as can happen to everyone else, including snow blocked roads, closed roads, traffic jams, mechanical breakdown, an inability to find the delivery address, or to gain access to it if, for example, it's in a block of flats. We work with some of the best couriers in the business, and overall they provide an outstanding service.

Do I need to be at home?
We are very flexible with our deliveries and will aim to deliver to an address which suits you – this does not need to be your home address. Goods can usually be left without signature - we prefer this with roof boxes. There's a "Special Delivery Instructions" box in the checkout area where we'll ask you to choose a typical instruction and then amend it to suit your particular requirements.

Payment options:

We take the following cards, and also PayPal. Please note that the entry on your card statement will be from "The Roof Box Company".

Secure payments

Our website is secured by Sectigo (formerly Comodo CA), the largest commercial Certificate Authority in the world.