Radiator Hex Nut to Secure Cooler

[xXxPARAGONxXx]

I am looking for part number or name of the hex nut that secure the cooler inlet/outlet to the plastic radiator end tank.

I am using this photo from another thread.

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Anyone know what they are called or where to find them? I can't seem to locate them on GM parts websites.

 

[Erik the Awful]

I'd either look in the junkyard or buy a new radiator. When I junked the original radiator in my Suburban, I pulled the oil coolers out of the end tanks and saved these nuts with them.

Edit: I did try and find the nuts in my parts breakdown, but the part numbers I got don't look right. 3050451 for the big nut and 3049652 for the smaller one.