Leaf spring hanger bolts

[AmadeusCharger500]

In the process of removing leaf springs. I have busted 4 of the press in bolts on the front hanger bracket. Question is, where do I get replacements. I tried one auto store and there only thought was to use a wheel stud. It was a great idea but the smallest bolt offered was 7/16. The ones on the part I need are 3/8 16 coarse. This must be something I can get somewhere? I hope.
I am just a little stumped as to where to get them, andybody know?

thanks

[OttawaCharger]

Try giving Mancini Racing a call.  They had complete replacement spring hangers last time I checked for about $50 a pair.

[Dennis K]

http://www.rtspecialties.net/proddetail.asp?prod=1000221

[Chryco Psycho]

I have just used a Grade 8 3/8" bolt in place of the studs in the past

[AmadeusCharger500]

I would rather not throw away two good shackles, so I guess I will just use the grade 8 bolts.
Thanks for the advice.