Unidentified bolts

[Jim Wayman]

I have had these small bolts for many years and don't know where I got them or what they are for. Maybe someone out there can help identify them. They are M4 X 6MM hex bolts with 7MM across the flats heads. They appear to e cad plated and are drilled for safety wire. They came in a plastic Porsche parts bag.

[Mike Wilson]

No part number on the bag, Jim?

Mike

[Mike Wilson]

I've been trying to envision where a 4mm bolt would have to be secured with safety wire. I haven't run across one on a 356.

Mike

[Jim Wayman]

No part number

[Pete Indelicato]

Look like the bolts that hold the brake assembly to the hub on drum brake models--three per side and drilled for wire lacing.

[Mike Wilson]

Too small for those bolts, Pete. The backing plate bolts are 10mm.

Mike

[Mike Wilson]

Jim, what is stamped on the heads of the bolts, Karro, NSF, Kamax, Verbus, etc.?

Mike

[Jim Wayman]

No marks on heads

[Mike Wilson]

That's interesting, Jim. I'll check my stash but I don't think I have any original M4 hex head bolts. 4mm is not something I would use for a strong assembly but the safety wire holes may indicate use in a vibration setting. The smallest bolt I have seen on my 356 is a M6 aside from the radio power to radio bracket screws. Darned if I know! Was the Porsche bag sealed?

Brain fart: the hex bolts for the T-6 horn grills are smaller but not safety wired.

Mike