Dove undercarriage bolts.

7/16 BSF, 1” 27/32” clear, 0.8” thread

Varsity, righto, I think I’m with you now, those are 4U 251. See pictures, it’s the one covered in grease.

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4U 251- 3″ 5/16″ total length, threaded section is 7/8″, rounded end part with lockwire holes is 5/16″ as is the hex. Can’t tell you the actual thread right now, but if I remember I can get it checked.

Thanks for looking we need the bolts at the top of the main leg at the bottom of the diagram if we can find the thread and length it would help.

Varsity, turns out there are no 4U 252 bolts listed in the parts book, so the box has been mislabelled. These are not a standard bolt- I’ll try to upload a picture in a few hours.

Dan, I think I found a second u/s large bolt, will need to ferret a bit more for the smaller ones.

Will have a look in the spares catalog tonight scrooge. I will keep looking here for wing bolts, with some luck you might be able to chuck some in with a “bigger” parcel later in the year.

I want your shelves! how did you go with the wing bolts scrooge? I might have got on to a half set here in oz

Plenty if you want new ones. I’ve found one large one that I think is u/s but not the smaller ones.

We’ve got a lot of 4U252 in a box marked as 4U253, what’s the difference?

I want your shelves! how did you go with the wing bolts scrooge? I might have got on to a half set here in oz

Hmm, might have a quick look on the shelves…

Hi Varsity,
Spare parts manual did not have the size or thread but they are Part number 4U 253
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Hi Varsity, If you don’t already have the answer by the time I get home I will check the manuals.