Thread: Radius Arm Bolt Size

Originally Posted by roverrescue

Search turned up bananas. I could measure to confirm but Im lazy

True or False
Radius arm to axle Bolts - 95 fender

M16 x 100mm - grade 8.8


Thanks
Steve

Steve,
I only have County measurements but they are probably the same
Front are 3 1/2 X 5/8 inch 8.8
Rear are 4 X 5/8 inch 8.8

Originally Posted by Bearman

Steve,
I only have County measurements but they are probably the same
Front are 3 1/2 X 5/8 inch 8.8
Rear are 4 X 5/8 inch 8.8

If the bolt head is marked 8.8 then it is a metric thread, likely 16mm as this is only 0.005" difference to 5/8". A 5/8" high tensile bolt will have radial lines on the head.

I know I do go on about this, but always quote the pitch as well as the diameter. Many people think ISO is the only metric thread and use the term M16 or whatever, not say M16 x 1.5. Many metric fastener diameters have as many as five different pitches in common use. The unified system is the same where you can have UNC, UNF, UNEF, UNS (several), UNMF, UNTT all in the same diameter, plus some seldom encountered special purpose threads.