Question About Bolts???

[beer30]

I am going to put 2" Bob's spacers on the Quartershot. My question is what is the longest bolt I can use with safety in mind. When I went on Bob's website, I saw that they had a recall on their older jackplates. They sent me the parts for the recall, one of the parts are stops that go on your bottom mount holes on the jackplate to engine. With these stops, jackplate, spacer, and engine mount, it comes to 7". So I was going to use a 8" bolt. Does this sound safe?? Thanks, Chuck

[hsbob]

use a grade 8 long enough for a std nut and a nylox nut. the length doesnt play into the yeild strength of the bolt. remeber grade 8 is not SS and will rust slightly. you will need to inspect every year, but you should do that even with SS.

[beer30]

My thinking was if it helps my performance, I would purchased a 8" jackplate.
What grade are the strongest SS bolts?? Chuck

[transomstand]

Chuck,

Regular stainless is only about 70,000 psi tensile strength, Grade 8 steel is like 120,000 psi, look into ARP stainless bolts, about 160,000 psi.


http://www.arp-bolts.com/

[beer30]

Chuck,

Regular stainless is only about 70,000 psi tensile strength, Grade 8 steel is like 120,000 psi, look into ARP stainless bolts, about 160,000 psi.


http://www.arp-bolts.com/

Just called them, 6" is the longest they make. Chuck

[transomstand]

I was afraid of that

[transomstand]

Here's another couple to try

http://www.totallystainless.com/

http://www.unbrako.com/bumax.htm

[transomstand]

Look at these too, go to the Mcmaster Carr web site, and put in this part number 91286A366, 8 inches long

<TABLE class=Tmplt_1 cellSpacing=0 cellPadding=0 rules=none border=0 frame=box><THEAD><TR><TH align=left colSpan=2><TABLE class=PrsnttnHdrTbl cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD class=PrsnttnHdrNm>Grade 8 Ultra Corrosion-Resistant Coated Alloy Steel </TD><TD class=PrsnttnHdrImg>
http://www.mcmaster.com/catalog/114/gfx/small/cads.gif (http://javascript<b></b>:CADHelp();)




</TD></TR></TBODY></TABLE></TH></TR></THEAD><TBODY><TR><TD class="IMGCell SeqNbr1Cell" style="WIDTH: auto"><TABLE class=imgTbl cellSpacing=0 cellPadding=0><TBODY><TR><TD style="TEXT-ALIGN: left">http://www.mcmaster.com/catalog/114/gfx/small/91286ac1s.gif (http://javascript<b></b>:chgimg('ECECK');)</TD></TR><TR><TD>Partially Threaded


</TD></TR></TBODY></TABLE>


</TD><TD class="CPYCell SeqNbr2Cell">These screws have a silver, water-based inorganic coating (also known as armor coat) for excellent corrosion resistance. They are effective replacements for stainless steel cap screws. The coating has a salt spray resistance of 1000 hours per ASTM B117 (zinc-plated screws show rust at less than 200 hours). Coating does not affect the function of the thread.
Screws are made of high-strength alloy steel and meet SAE J429. Rockwell hardness is C33-C39. Min. tensile strength is 150,000 psi. All have a Class 2A thread fit and are grade marked on top of the head (six radial lines indicate Grade 8). Length is measured from under head.


</TD></TR></TBODY></TABLE>

[beer30]

Look at these too, go to the Mcmaster Carr web site, and put in this part number 91286A366, 8 inches long

<TABLE class=Tmplt_1 cellSpacing=0 cellPadding=0 rules=none border=0 frame=box><THEAD><TR><TH align=left colSpan=2><TABLE class=PrsnttnHdrTbl cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD class=PrsnttnHdrNm>Grade 8 Ultra Corrosion-Resistant Coated Alloy Steel </TD><TD class=PrsnttnHdrImg>
http://www.mcmaster.com/catalog/114/gfx/small/cads.gif (http://javascript<b></b>:CADHelp();)




</TD></TR></TBODY></TABLE></TH></TR></THEAD><TBODY><TR><TD class="IMGCell SeqNbr1Cell" style="WIDTH: auto"><TABLE class=imgTbl cellSpacing=0 cellPadding=0><TBODY><TR><TD style="TEXT-ALIGN: left">http://www.mcmaster.com/catalog/114/gfx/small/91286ac1s.gif (http://javascript<b></b>:chgimg('ECECK');)</TD></TR><TR><TD>Partially Threaded


</TD></TR></TBODY></TABLE>


</TD><TD class="CPYCell SeqNbr2Cell">These screws have a silver, water-based inorganic coating (also known as armor coat) for excellent corrosion resistance. They are effective replacements for stainless steel cap screws. The coating has a salt spray resistance of 1000 hours per ASTM B117 (zinc-plated screws show rust at less than 200 hours). Coating does not affect the function of the thread.
Screws are made of high-strength alloy steel and meet SAE J429. Rockwell hardness is C33-C39. Min. tensile strength is 150,000 psi. All have a Class 2A thread fit and are grade marked on top of the head (six radial lines indicate Grade 8). Length is measured from under head.


</TD></TR></TBODY></TABLE>


I ordered 3 of them.:) Chuck

[stokernick]

3????????????

[beer30]

3????????????

If one gets screwed up, I have a replacement!!!!!!!!!!!!!!!:D :D Chuck