A source of copper bolts, washers and nuts?

Deveak

My batteries are currently removed from my solar system. I am rebuilding it in a battery box and trying to keep everything both neat and tidy but I noticed I had used galvanized bolts on my battery terminals. They are L shaped thick lead terminals with a bolt eye in them. I used a 12 mm bolt I think to basically carve out the lead and tap it to that size. Does anyone make tinned copper bolts and nuts? Also is a 2/0 battery interconnect cable thick enough for a system expected to use up to 150 amps? Very short cables. About 5 inches long. Thanks.

BB.

From what I recall, copper on copper bolts and nuts are not really a good material selection.

Research Silicon Bronze alloy bolts, washers and nuts. This (as I understand) is preferred for copper to copper connections.

-Bill

Xizang

Stainless steel seems to resist corrosion well.  Most regular hardware stores have a good selection.

mike95490

Stainless with anti-size lube works well on battery terminals The SS threads will gall on each other, so you need some sort of lube on the threads to keep them from sizing.

Johann

http://www.ebay.com/sch/i.html?_nkw=copper+bolts
I would use brass or bronze, copper bolts will stretch with heat and cold and you would need to torque every month.

If i remember right, stainless steel has 17 times more resistance than copper has.

mike95490

Johann : If i remember right, stainless steel has 17 times more resistance than copper has.

You put the copper lug next to the terminal, and pinch them together with the SS hardware.   Don't rely on the SS to carry current,
I use copper loaded grease at high power flat connections   http://www.mcmaster.com/#conductive-grease/=119vamr

or the silver route:  cool-amp.com