Farm Equipment - thread size on B gas tank

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thread size on B gas tank

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=184604
Printed Date: 19 May 2025 at 12:29pm
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Topic: thread size on B gas tank

Posted By: Billy Ray
Subject: thread size on B gas tank
Date Posted: 15 Nov 2021 at 4:46pm

Anyone know off hand what the thread size is on the gas tank of a B? Pretty sure it is 5/8 but is it pipe thread or NF?

Replies:

Posted By: steve(ill)
Date Posted: 15 Nov 2021 at 4:49pm

If your talking about the sediment bowl, its a small pipe thread ( 1/4 inch ?)

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Like them all, but love the "B"s.

Posted By: ORBill
Date Posted: 15 Nov 2021 at 7:40pm

3/8" NPT (pipe thread)

I use a 3/8" pipe plug in mine when I clean the tanks. Fits all B's and C's.

Bill

Posted By: Wes (VA)
Date Posted: 15 Nov 2021 at 7:46pm

I agree with Bill. 3/8" NPT.