# 18 hole end cap not fitting

**URL:** <https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891>\
**Category:** BlueROV2\
**Created:** [April 21, 2019, 7:38am UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891 "2019-04-21T07:38:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ROVoz](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@ROVoz](https://discuss.bluerobotics.com/u/ROVoz)\
**Post date:** [April 21, 2019, 7:38am UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/1 "2019-04-21T07:38:47Z")

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I have fitted all 18 pentrators (4 of which are blanks) to end cap but they seem to be touching side of water tight enclosure. How can it slide into position when the pentrator nuts are quite a bit preventing end cap to be fitted?

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**Author:** ![ROVoz](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@ROVoz](https://discuss.bluerobotics.com/u/ROVoz)\
**Post date:** [April 21, 2019, 7:51am UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/2 "2019-04-21T07:51:02Z")

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Ok, I think is I don’t use the red nuts on the outer rim pentrators, is that correct?

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**Author:** ![BayDynamics](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/baydynamics/32/3019_2.png) [@BayDynamics](https://discuss.bluerobotics.com/u/BayDynamics)\
**Post date:** [April 21, 2019, 9:09am UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/3 "2019-04-21T09:09:17Z")

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Hey Grant

No need to use the red penetrator nuts on the outer threaded holes mate.

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**Author:** ![ROVoz](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@ROVoz](https://discuss.bluerobotics.com/u/ROVoz)\
**Post date:** [April 21, 2019, 9:24am UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/4 "2019-04-21T09:24:02Z")

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Cool, thanks Matt 👍

that’s what I thought after reviewing the 18 hole end. Would have been nice to get a heads up prior though to save repeating the major fit out.

Regards

Grant

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**Author:** ![corndog](https://avatars.discourse-cdn.com/v4/letter/c/90ced4/32.png) [@corndog](https://discuss.bluerobotics.com/u/corndog)\
**Post date:** [April 21, 2019, 3:10pm UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/5 "2019-04-21T15:10:54Z")

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Did you order it from the website? They do show it fully loaded with no nuts on the outer ring. Still a bummer to have to disconnect it all.

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**Author:** ![ROVoz](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@ROVoz](https://discuss.bluerobotics.com/u/ROVoz)\
**Post date:** [April 21, 2019, 8:47pm UTC](https://discuss.bluerobotics.com/t/18-hole-end-cap-not-fitting/4891/6 "2019-04-21T20:47:32Z")

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Yes I did and yes eventually realised after going to several option LEARN sections. For newbies like me and having optioned up, it would have been nice to get a heads up rather than start all over again. Oh well, the positives are I’m getting to know the ROV pretty well 👍. Txs for the reply

Regards

Grant