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Blue Sea ST Blade fuse block terminals


Lead Wiki Manager
Super Moderator
Jul 18, 2004
Central Indiana
I used Blue Sea ST Blade fuse blocks for an install several years ago and I have no complaints about their performance. Seems like I bought everything I needed from West Marine (and probably paid too much for the stuff).

The one thing that I thought was odd was the screw size for the terminals on the distribution side. They are #8 screws. Yes, you can buy crimp-on ring terminals for #8 studs that will handle up to 8 AWG wire. But, that #8 screw size always seemed to small to me.

Am I just being too cautious? Is there someone out there who can pat me on the head and tell me that #8 screws are OK for this application?


I ♥ Ø
Jul 27, 2005
#8 is really close to 4mm. According to this chart, 4mm is good for 35 amperes.

I think more important than the screw size would be the amount of area of the ring terminal where it touches the buss.