When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Two small bolts that says N.F 8.8. Can anyone identify?
Hi I recently found two small bolts in driveway after driving out. Does anyone have an idea what part they are for? 2010 Corvette Base model automatic. It says N.F 8.8 on top of it.
Not sure about NF (which can stand for National Fine on a US bolt) but yours looks to be a metric bolt with an 8.8 hardness rating. The markings are certainly not an indication of where the bolts are installed.
Metric bolt strength is designated by a two-number system indicating tensile strength and yield ratio. Higher numbers mean stronger, harder bolts. Standard classes range from 4.6 (low-strength) up to 12.9 (high-strength alloy steel)
Tapered self-tapping threads usually indicate a body panel fastener or structure mount, where hole alignment isn't that good. The taper "corrects" this mis-alignment somewhat.
Now, an 8.8 grade isn't really going to be used for critical frame fastening, as it's fairly soft. (Unless there is a lot of tympanic vibration at the location.) Harder fasteners can loosen in these unique locations, where softer will maintain torque due to easier bolt stretch. Sorry, I kind of went into the science of metallurgy there for a minute.
Not sure about NF (which can stand for National Fine on a US bolt) but yours looks to be a metric bolt with an 8.8 hardness rating. The markings are certainly not an indication of where the bolts are installed.
Metric bolt strength is designated by a two-number system indicating tensile strength and yield ratio. Higher numbers mean stronger, harder bolts. Standard classes range from 4.6 (low-strength) up to 12.9 (high-strength alloy steel)
Tapered self-tapping threads usually indicate a body panel fastener or structure mount, where hole alignment isn't that good. The taper "corrects" this mis-alignment somewhat.
Now, an 8.8 grade isn't really going to be used for critical frame fastening, as it's fairly soft. (Unless there is a lot of tympanic vibration at the location.) Harder fasteners can loosen in these unique locations, where softer will maintain torque due to easier bolt stretch. Sorry, I kind of went into the science of metallurgy there for a minute.
Lol man that really helps! I like science lol. Thanks my friend
You are brilliant! You are right they are 10mm. You have a clue to which part of the body it could be from? Thanks for the help!
Don't feed my ego I'm already a big enough a**hole! Lmao
They're used in several places. They are the same bolts on the bottom rear of my front fenders.
Where did you find them?
Don't feed my ego I'm already a big enough a**hole! Lmao
They're used in several places. They are the same bolts on the bottom rear of my front fenders.
Where did you find them?
Lmboo! Hey you earned it big dog! Will be the first place I check next. They where just randomly laying in the driveway after I backed out of it.
Lmboo! Hey you earned it big dog! Will be the first place I check next. They where just randomly laying in the driveway after I backed out of it.
Lol. Thank you
Most of them seem to be on the lower part of the car and in the wheel wells. I just looked and they are the same bolts on the bottom of the back bumper.
Let us know your outcome.
Last edited by Corvette_Dez; Yesterday at 09:25 PM.
Two small bolts that says N.F 8.8. Can anyone identify?
