What size bulkhead fitting fits an 1-3/8 inch hole?

cherubfish pair · 05/27/2006, 04:34 PM

What size bulkhead fitting fits an 1-3/8 inch hole?

3/4 inch or 1 inch?

Avast Marine · 05/27/2006, 06:15 PM

Sorry to rain on your parade but, thats a 1/2" bulkhead.

Jester75 · 05/27/2006, 07:27 PM

The 1/2" bulkheads I just used required a 1 1/8" hole. 1 1/2" for 3/4" and 1 3/4" for 1". These are standard double threaded bulkheads that I am referring to also.

Avast Marine · 05/27/2006, 08:46 PM

Quote:

Originally posted by Jester75
The 1/2" bulkheads I just used required a 1 1/8" hole. 1 1/2" for 3/4" and 1 3/4" for 1". These are standard double threaded bulkheads that I am referring to also.

Uh....1 1/8" = smaller than 1 3/8" = fit
and 1 1/2" = larger than 1 3/8" = no fit

joedirt54 · 05/27/2006, 11:13 PM

heavy-duty 1/2" bulkheads require 1 3/8" holes , regular 1/2" bulkheads are 1 1/8", but I'm sure both holes are oversized. I measured my standard 1/2" bukheads and they are 1.09" and not 1.125".

I figured this out last week, as I need to order a diamond hole saw in mm. 1 1/8" is like 28.65.mm, but a 28mm holesaw is fine for a standard bulkhead that is only 27.65mm wide at the threads.

05/27/2006, 04:34 PM	#1
cherubfish pair Registered Member Join Date: May 2004 Location: Libby, Montana Posts: 7,061 Blog Entries: 1	What size bulkhead fitting fits an 1-3/8 inch hole? What size bulkhead fitting fits an 1-3/8 inch hole? 3/4 inch or 1 inch? __________________ pairo chero Thanks for looking at my build thread and subscribe to it if you already haven't yet! Current Tank Info: thirty rimless

05/27/2006, 06:15 PM	#2
Avast Marine RC Sponsor Join Date: Feb 2006 Location: Northern VA Posts: 2,446	Sorry to rain on your parade but, thats a 1/2" bulkhead. __________________ Dan Don't rush art, you get bad art.

05/27/2006, 07:27 PM	#3
Jester75 Registered Member Join Date: Apr 2006 Location: Dalton, GA Posts: 129	The 1/2" bulkheads I just used required a 1 1/8" hole. 1 1/2" for 3/4" and 1 3/4" for 1". These are standard double threaded bulkheads that I am referring to also.

05/27/2006, 11:13 PM	#5
joedirt54 Registered Member Join Date: Feb 2006 Location: Western PA Posts: 248	heavy-duty 1/2" bulkheads require 1 3/8" holes , regular 1/2" bulkheads are 1 1/8", but I'm sure both holes are oversized. I measured my standard 1/2" bukheads and they are 1.09" and not 1.125". I figured this out last week, as I need to order a diamond hole saw in mm. 1 1/8" is like 28.65.mm, but a 28mm holesaw is fine for a standard bulkhead that is only 27.65mm wide at the threads.