I have some Nissan hex- bolts ( 08114-0251A ). 5 to a package. Is there a way ( easy way ) to find out what their for ? Thank you.

Heat shield?

For some Datsuns they are on the engine mounts.

 

They are also on the 510 transmission cross member:

 

http://www.carpartsmanual.com/datsun510/Datsun510Index/EngineFitting/EngineMounting/tabid/526/ctl/ViewPartNumberDetails/mid/6529/KeyNo/36/SectionNo/022/PartNo/08114-0251A/ModelNo/510/Default.aspx

Ton's of 10 x 1.25 bolts in the suspension and other spots on a Z, pretty much any time a 10mm bolt threads into the body or suspension component. Also on trans hanger brackets and insulators.

 

Blue did pull a listing for that specific bolt from a 510 as being the one that bolts the cross member to the trans insulator.

 

But for a Z, its the (earlier  08114 - 02510 number) is the bolt that holds the rear bumper mount to the body.

 

10x1.5 bolts are only found in the engine block and transmission housings.

Jim needs those for his 510.... he is too polite to ask

I am having trouble finding bolts, nuts, and washers for my 1970 240Z (VIN 3435). I have tried Courtesy Nissan but get only 4 of 17 available.  I am finishing the differential, drive shaft and half-shafts reassembly and reattachment to the car.  Has anyone worked with www.partsfornissans.com. They show  some of the parts available. I've tried the normal dealers and suppliers of 240Z parts. I have bought the MMS Accessories Inc. stainless steel fastener kit for the !970 240Z but MMS does not have a kit for the differential and rear suspension Is there any documents/files that give the descriptions of the part other that Hex Nut M10, etc. Any suggestions?