drilling a fuge

[bpro32]

what size hole do I need for a 1 1/2" bulkhead?

 

[veni vidi vici]

2-3/8" or 62mm

 

[wattsupdoc]

This depends on which 1 1/2 bulkhead you have. Sch. 40 (2.5in)or sch. 80. (2 5/8in.)