Threaded rod vs studs, same material ??

[PORT]

Alright guys, need some input
I need a few stainless steel studs (4.5" & 6.25" long), unfortunately for me they must be an off size (9/16-12).

Only found one place that makes the studs in 18/8 (304) stainless and they won't sell in small quanties, but I found a place that sells 9/16-12 stainless 18/8 threaded rod.
Can I just cut the rod to my desired lengths or does the 18/8 (304) refer to the stainless coating and most likely the studs are made a lot stronger than the threaded rod?
I need these for my Land and Sea jackplate and I run a 100, so it is a safety issue. And yes, I don't like using studs either, but that is how it was designed.

Thanks
Frank

[JR IN JAX]

Can you buy a spec grade bolt that has a long enough threaded surface to cut it with a die grinder cut off wheel?

[flabum1017]

On this application, there is mostly a tension load on the fastener but there is also an amount of shear load too. the problem with threaded rod is that the shear strength is reduced. When properly installed, the grip (smooth shoulder) of the bolt is passing throught the transom and into the jack plate and the threads should be just inside the hole. The grip of the bolt has all the shear strength. A threaded rod will make it so here is a thread groove right at the shear point which can cause the rod to be sheared. If this application only had a tension load, then I'd say threaded rod would be fine.....

[BUSHWACKER]

Did ya try contacting Land & Sea?
Or try
www.arp-bolts.com
800-826-3045 Calif.

[Superbender]

Try contacting ss marine they should have exactly what you need

[PORT]

SS MARINE being STAINLESS MARINE? I didn't see anything on their website for hardware. It is unbelievable that nobody has these double ended studs in this size (9/16-12).

[4JawChuck]

I would use a 316L or 410 grade of SS, grades 18/8 and 304 are pretty soft (i.e. stretch easily) and suffer from crevice corrosion issues in comparison. I would contact the jackplate supplier as they will have the right bolts in stock of the correct grade for nearly the same price. I know around here I have to order allen head fasteners in SS to get any kind of grade other than grade 2 which is 304 or 18/8.

To make a 304/18-8 fastener in grade 5-8 they prestress the fastener which causes the crevice corrosion issue.

[BUSHWACKER]

Sorry I forgot www.mcmastercarr.com is another good source to check.

[loop]

use 17-4 stainless. Readily available,strong and corrosion resistant

[HStream1]

use 17-4 stainless. Readily available,strong and corrosion resistant

Just currious? Where can you find 17-4 PH (630) grade stainless in production bolts without having to go to a machine shop or machining them yourself to have them made?

[MattGreen]

I can't comment on availability in your area, but you definitely can buy 17-4 SS at good fastener suppliers. Look for a place that specializes in corrosion-resistant fasteners.

I was looking at this issue for a V8 OMC application a few years ago.

Matt

[BarryStrawn]

www.totallystainless.com has high strength 17-4PH bolts as catalog items. Their small size high strength bolts are ARP and large stuff is their own label. They will also custom make studs.

[rockman69]

Try these out, have bought from them, i used 2 - 9/16" 17-4 bolts for top bolts of jack plate.

http://www.mmsacc-stainless.com/html...ngth_bolts.htm

also, try these guys:

http://stainlessbits.com/cart/shopdi...Thread%3Cbr%3E

call them to see how long the threaded portion of the bolt is and cut to size, also inquire about 17-4 threaded rod, never know

a 10" 9/16" bolt is 18-20 bucks, not sure how much thread
hope this helps

[loop]

Thanks Barry Strawn and Rockman69.
I guess I was thinking of "readily available" as a material such as round bar. Good to know there are bolt suppliers though.
I'm running a L&S jackplate too so I'm familliar with those studs. A decent machine shop shouldnt charge too much to make them. I'm not crazy about running studs instead of thru bolts. Just make sure the threads in the plate are in good shape.

Just currious? Where can you find 17-4 PH (630) grade stainless in production bolts without having to go to a machine shop or machining them yourself to have them made?