Manoa Matt,
I've never heard of Grade 10 hardware.
Please see the chart following this link: http://www.engineersedge.com/hex_bolt_i ... cation.htm
Did you mean Class 10.9?
If so, the chart shows that the proof load, yield, and tensile strength are the same for Grade 8 or Class 10.9.
I would welcome some edumacation on this.
Dave
Searching for bolts RESOLVED
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focodave
- Patron 2018
- Posts: 704
- Joined: Sat Jun 30, 2012 10:35 am
- Your car is a: 1980 Spider 2000 F.I.
- Location: Fort Collins, CO
Re: Searching for bolts RESOLVED
1980 Spider 2000 F.I. (my hobby)
1970 MGB GT (my other hobby)
2008 Ford Expedition (daily driver)
2019 Harley-Davidson Electra Glide Standard
2019 Harley-Davidson Iron 883 Sportster
1970 MGB GT (my other hobby)
2008 Ford Expedition (daily driver)
2019 Harley-Davidson Electra Glide Standard
2019 Harley-Davidson Iron 883 Sportster
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4uall
- Posts: 4145
- Joined: Mon Sep 26, 2011 12:09 pm
- Your car is a: 1980 Fiat Pininfarina Spider 2000 F.I.
- Location: Ottawa, Ontario, Canada
Re: Searching for bolts RESOLVED
I did speak with the guys where I bought the bolts (they have been there a loooooooooonnnnnnggggggg time) and they informed me that for Fiona's suspension, these are the correct bolts. I feel confident in their knowledge and in the integrity of the bolt. Only time will tell 
Jay
Fiona
1980 FI 2000 Spider
ITZEBTZE
https://goo.gl/photos/eNKaX7hrXhBu9fmp6
FINN (FN-2187)
2014 Jeep Wrangler Sport
MYTHERPY
Fiona
1980 FI 2000 Spider
ITZEBTZE
https://goo.gl/photos/eNKaX7hrXhBu9fmp6
FINN (FN-2187)
2014 Jeep Wrangler Sport
MYTHERPY
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RRoller123
- Patron 2020
- Posts: 8179
- Joined: Sun Nov 13, 2011 2:04 pm
- Your car is a: 1980 FI SPIDER 2000
- Location: SAGAMORE BEACH, MA USA
Re: Searching for bolts RESOLVED
That bolt chart is great! Instant save. Thanks for posting. I have always been a little unsure of all those top markings.
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
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manoa matt
- Posts: 3442
- Joined: Thu Oct 26, 2006 4:28 pm
- Your car is a: 1978 Fiat 124 Spider 1800
- Location: Honolulu, Hawaii
Re: Searching for bolts RESOLVED
I took my info from the numbers on the fiat bolt head and did not consider the radial dashes. I admit I've never heard of a grade 10.0 bolt and tried to cross check the bolt grade from the suspension specifications page of the Fiat factory service manual, but just so happens that page is missing from my binder. It's likely the Fiat bolts are 10.9. It also appears you have two stock Fiat bolts and two non stock bolts alternating, it may be fine, I don't know, I usually default to the engineers who designed the car.