Oil drain plug markings????
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Senior Member
Joined: Feb 2001
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From: Pembroke Pines, FL.
Oil drain plug markings????
Does anyone know what the markings on my 4.2L oil drain plug mean? It reads 5.8 / S
It has a 1/2" hex head on th bolt.
I can't find a reference tp bolt head markings like this.
It has a 1/2" hex head on th bolt.
I can't find a reference tp bolt head markings like this.
Thread Starter
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Senior Member
Joined: Feb 2001
Posts: 358
Likes: 0
From: Pembroke Pines, FL.
F.Y.I.
Found the answer to my own question. 5.8 is a Metric ISO fastener grading. See: http://www.blm.gov/nhp/efoia/wo/handbook/h-9102.html tabel 9.
Found the answer to my own question. 5.8 is a Metric ISO fastener grading. See: http://www.blm.gov/nhp/efoia/wo/handbook/h-9102.html tabel 9.