Bolt Size?

[JON Q]

Originally Posted by Vince@MSperfab

we did ARP's on a 68.

5/16" x 18 x 1" fender/sheet metal
5/16" x 18 x 3/4" fender/wheel houses
5/16" x 18 nuts fender/header panel
3/8" x 16 x 2" fender to body
3/8" x 16 x 1" hood hinges
5/8" x 11 x 3" frame to body
3/4" x 10 x 1 1/2" bumper bracket
3/4" x 10 nuts bumper bracket

Would these be the same size for a 69?

[Vince@Meanstreets]

Originally Posted by SIXX

Would these be the same size for a 69?

yes. add a bunch of screws to the list

[Vince@Meanstreets]

Originally Posted by MtotheIKEo

You're fine. I believe Carl is referencing SS bolts found at your local hardware store. They generally have a pretty low UTS, about as strong as a Grade 2 bolt. The below link shows what is typically found at hardware stores, 70ksi tensile strength....
http://www.mcmaster.com/#socket-head...crews/=109atn3

ARP, DSE body bolts, etc... are VERY strong. See the link below for McMaster-Carr 12-point stainless cap screws with 170ksi tensile strength.
http://www.mcmaster.com/#standard-cap-screws/=109aspp

Link to ARP's stainless explanation (also 170ksi tensile strength)
http://arp-bolts.com/p/technical.php

mcmaster carr sells arp but its higher cost than summit or direct

what i usually do is figure out what size i need then say if its a 5/16" x 18 x 1" bolt I'll look for a differential kit. 12 bolt chevy kit has 12 bolts 5/16" x 18 x 1" with washers. if you buy them separate or a 5 pack they will cost average is $2.40 a bolt plus the washers. it a 12 bolt diff kit you may spend $1.75 per bolt and that comes with the washers.

same with the 3/8" x 16 x 1.25" bolts, i'll buy a chevy intake manifold kit, 12 bolts w/ washers for $2.91 each and the 5 packs are $3.10 each. every little penny helps

[JON Q]

Originally Posted by Vince@MSperfab

yes. add a bunch of screws to the list

Thanks!!

[96z28ss]

Yeah, I was going to do all arp fasteners for the entire car. Then I priced it out. Hell no, that was some serious cash. I just did all arp for the engine only.

[CarlC]

On

Originally Posted by MtotheIKEo

You're fine. I believe Carl is referencing SS bolts found at your local hardware store. They generally have a pretty low UTS, about as strong as a Grade 2 bolt. The below link shows what is typically found at hardware stores, 70ksi tensile strength....
http://www.mcmaster.com/#socket-head...crews/=109atn3

ARP, DSE body bolts, etc... are VERY strong. See the link below for McMaster-Carr 12-point stainless cap screws with 170ksi tensile strength.
http://www.mcmaster.com/#standard-cap-screws/=109aspp

Link to ARP's stainless explanation (also 170ksi tensile strength)
http://arp-bolts.com/p/technical.php

This.

But, it also applies to the stainless fastener kits sold by the repro parts houses. From a structural standpoint, most all of it is of unknown quality, specifications, etc. I trust none of it.

Let's not delve into proper length specifications for double shear just yet either. ..... ;-)

[Spiffav8]

Originally Posted by 96z28ss

Yeah, I was going to do all arp fasteners for the entire car. Then I priced it out. Hell no, that was some serious cash. I just did all arp for the engine only.

I hear you. Just doing the few that I am and my motor isn't cheap. It's one of those things that I really like the look of though, so it's worth the over time.

[MtotheIKEo]

Originally Posted by Vince@MSperfab

buy ARP bolt kits

Great tip! I've looked into ARP bolts but the cost is crazy. This makes it more reasonable.

[MtotheIKEo]

Originally Posted by CarlC

Let's not delve into proper length specifications for double shear just yet either. ..... ;-)

One of my biggest pet peeves with suppliers. Not providing proper bolts for their kits. Threads cutting up mounting tabs and being mounted in shear.

[CarlC]

Originally Posted by MtotheIKEo

One of my biggest pet peeves with suppliers. Not providing proper bolts for their kits. Threads cutting up mounting tabs and being mounted in shear.

Even the OE parts are like this. After using the correct AN standard fastener it's hard to consider going back except on resto-builds.