need help figuring out bolt size
 

does anyone know what size bolt is used for the air pump mounts and the altenator mounts, just got this car, and bolts not included :( new air pump and altenator but no way to mount them, not good with a tape measure so any help would be appreciated. also if anyone has the part number for the adjustment brackets for both items that would help greatly as well. can't find any of this info in haynes, chilton, or factory service manual. thanks in advance.
parts are for a 71 240Z.

I believe the alternator bolts are 12mm. I'm sure you have 2 spare 12mm bolts no? :D

As for the alternator bracket... this part should be the same for all L24-L28ET motors:

http://nissan4u.com/parts/280zx/us_s...llustration_1/

#3: Bar-adjusting, alternator
11715P6500
alternate: 11715P8000

http://static.nissan4u.com/epc_img/5733932244184.png

ok thank you i appreciate it, will pick up a couple tomorrow and try my luck, i'm guessing coarse thread bolt, any idea on length?