C4inLA

I am going through bags no tags of under car cladding fastners i removed months ago... i need to visit hardware store and pick up temp pieces to hold shifter tunnel gaurd .. lost bag... then start finding home for all stuff in picture using PET .... Argh...

What do prefixes mean ?
M is Metric
B is ?
A is ?

Rocket Rob

Yes, the M means metric. A M6 bolt is a 6mm diameter bolt with a typical 1.00 mm thread pitch.

The washer is a 6.4mm inside diameter.

C4inLA

Familiar with Metric sizing, it's the other notations in Red Books?

Examples;

B 6.4
A 5.3

?

18T_BT

https://en.wikipedia.org/wiki/Washer_%28hardware%29


Form A: Normal diameter, normal thickness
Form B: Normal diameter, light thickness
Form C: Large diameter, normal thickness
Form D: Large diameter, light thickness
Forms E to G relate to black metal washers.

C4inLA

Many thanks guys....

AOW162435

The four longs bolts are for your brake cooling scoops and the two stainless bolts are for the cover under the steering rack. (Going off memory from taking everything under my 993 apart numerous times over the years).



Andreas