15/64×48 tap

15/64×48 tap

This topic has 5 replies, 4 voices, and was last updated 14 February 2020 at 19:07 by Brian H.

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14 February 2020 at 15:53 #452185
Graham Titman
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@grahamtitman81812
As the title says i have recently aquired a small Maxwell-Hemmens boiler and need to clean out the boiler feed thread and discovered it is a slightly non standard thread as above top diameter is .231 and as near as i can tell 48tpi.Thanks
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14 February 2020 at 15:53 #19625
Graham Titman
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@grahamtitman81812
Where to buy
14 February 2020 at 16:23 #452194
John MC
Participant
@johnmc39344
Metric? M6 x 0.5 possibly.

John
14 February 2020 at 17:47 #452213
Martin Connelly
Participant
@martinconnelly55370
It's also close to 12-48UNS which has a max major diameter of 0.2151". This means an accurate tpi or pitch value needs to be found before going any further. It's not what they are designed for but thread gauges can be used to clean some debris out of small female threads. If you don't have any thread gauges this may be the time to get some.

Martin C
14 February 2020 at 18:21 #452218
Graham Titman
Participant
@grahamtitman81812
Thanks very John it matches up very well. I must assume the boil is continental with threads like that all the fitting are very well made for what i assume is a commercial boiler. The feed is on the other side.Thank you all for your help Graham
14 February 2020 at 19:07 #452222
Brian H
Participant
@brianh50089
It might be worth contacting John Hemmens.

[email protected]

Brian
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