Disclaimer: These are the sizes I measured on my 2000 SU's, but I don't
think the 1600 ones are necessarily different. Oddly, my parts manual lists
the same part number for both the piston pot screws and the float bowl cover
screws on the 2000 SU's (contradicting what I just measured), but different
numbers for those two screws on the 1600.
The screws for the piston pots are 5mm x 0.8 pitch. That's pretty standard.
The screws for the float bowl covers are 5mm x 0.75 pitch, which is
definitely not standard. I believe it's called a French Metric. You might be
able to special-order them through a place like Tacoma Screw Products if the
vendors don't have them.
Gordon Glasgow
-----Original Message-----
From: datsun-roadsters-bounces@autox.team.net
[mailto:datsun-roadsters-bounces@autox.team.net] On Behalf Of robert
williams
Sent: Friday, July 05, 2013 7:37 AM
To: datsun-roadsters@autox.team.net
Subject: [Roadsters] screw thread size for hitachi carbs
Hello List,
The ground up resto is in the home straight so looking to finish up a few
smaller items.
Does anyone know the thread size of the following screws:
4 x phillips head screws that fasten the top of the float bowls on the
hitachi carbs 4x screws for the piston pots on the carbs for an early (1966)
1600 low screen.
I thought they may be 11/32 unf but alas they seem to be a smaller.
The tops of my screws are burred and battered from years of abuse so thought
I would replace them.
regards,
Rob
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