Are 50mm bolts to long with 16mm spacers?

[Usr117063]

So i ordered some 16mm hubcentric spacers and they came with 40mm bolts from ebay the other day but they have given me the wrong size bolts, the thread size is about 15mm not 12, actually in the bag 2 were the right size the other 6 were not :expressionless:
Will 50mm be alright? Cause I can pick them up tomorrow instead of waiting till next week to get them refunded online
Cheers!

 

[Usr117063]

They are too long by only 2mm or so. But have got the 40mm ones now anyway the seller sent them for free and the spacers are on, feels nice and planted now and more solid