RAW Hm1000 pellet probe Screw Size.

[Vard]

Hello All,
On the pellet probe there appears to be a grub screw which locks the probe outer into position once adjusted.
However on my rifle it appears to be missing (pic attached).
Can you please advise size so that I can source replacement ?
Thanks in advance,
Vard

[Squinty]

what size allen key- metric or imperial?
Could be M3...or 4ba
Have a feeling that the old BA threads will have been superseded by now although RAW were still using 2BA for the bolt/probe adjustment grub 3-4 years ago

[Vard]

The screw is missing so I don't know the size. However , there are 2 others grubscrews that look to be similar either side of the probe.

[Dave74]

Can you take one out other side and measure it

[Squinty]

doh....   

[Vard]

Having removed and measured the grub screw either side of the probe(seems to be M3 ??)the inner one is smaller.
I've ordered a selection of smaller metric grubscrews and hopefully
1.) it's metric
B.) I've ordered enough variety.

[Mattb]

Having removed and measured the grub screw either side of the probe(seems to be M3 ??)the inner one is smaller.
I've ordered a selection of smaller metric grubscrews and hopefully
1.) it's metric
B.) I've ordered enough variety.

Probably imperial on a Raw

[Vard]

Yep, seems to be imperial. Around M2 size . An M2 grub will engage and seems very near actual size .
Without digging my Zeus out what's it likely to be?

[Andycoup]

Anywhere near the same size as the valve retaining bolt? If not, try emailing RAW.

[Dave74]

8ba 3/32 not 100% I used m2.5 die and m2.5x2.5 originals very small and not good to get positive tightness

[Vard]

Anywhere near the same size as the valve retaining bolt? If not, try emailing RAW.

Nope smaller than the valve screw.

I've emailed RAW and had no response.
I was considering  maybe in the future a HM1000x but they can swivel now .

[Vard]

8ba 3/32 not 100% I used m2.5 die and m2.5x2.5 originals very small and not good to get positive tightness

Will consider doing this .Thanks

[Remchester]

Hello All,
On the pellet probe there appears to be a grub screw which locks the probe outer into position once adjusted.
However on my rifle it appears to be missing (pic attached).
Can you please advise size so that I can source replacement ?
Thanks in advance,
Vard

hi mate did you figure the size out? I've got one that could do with em replacing 👍

[Johny64]

It's a 4/40 unf thread 3/32nd's long

[Remchester]

It's a 4/40 unf thread 3/32nd's long

had a quick look couldn't find any 4/40unf but found 4/40 unc?