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Bolt Nut and Washer sizes
In looking at the PET catalog I see specifications for nuts bolts and washer like this. What do these notation mean? I know the M5 or M8 means it is a metric size and the 5 or 8 is the diameter. How do you know what the correct length and thread pitch should be?
Washer A 5,3 Lock Nut M 5 Hexagon-head Bolt M 8 x16 Thanks.
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Mike '84 911 Carrera Coupe (totaled) '83 911 SC Coupe ‘06 Aston Martin Vantage V8 |
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04-29-2006, 08:17 AM
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You could always identify the thread pitch of the old one with a thread gage.
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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04-29-2006, 09:09 AM
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Not quite sure where you're going with the question....
M8 x 16 means a metric 8mm bolt that is 16 mm long under the head. - Wil
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Wil Ferch 85 Carrera ( gone, but not forgotten ) |
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04-29-2006, 10:09 AM
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The nut designation must mean it fits an M5 bolt. There is a DIN and now I guess an ISO std. for the thread ptich. IIRC, rarely there will be a departure from that for special use fasteners.
No ideas about the washer designation -- where did you see that code listed? Jim Sims is bound to know all about this - he might see your query and post something definitive.
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04-29-2006, 11:11 AM
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Ok. Thanks. That answers one question. That means the thread pitch is not specified. Could it mean that the thread pitch is standard for a certain size of a bolt?
I found the washer description in the online parts catalog. http://www.porsche.com/usa/accessoriesandservices/classic/classic-originalparts/originalparts-originalparts/
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Mike '84 911 Carrera Coupe (totaled) '83 911 SC Coupe ‘06 Aston Martin Vantage V8 |
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04-29-2006, 12:53 PM
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There is a DIN and now I guess an ISO std. for the thread ptich. IIRC, rarely there will be a departure from that for special use fasteners.
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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04-29-2006, 01:25 PM
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Thanks. I am not sure what the A means in front of the washer size but the 5,3 means a 5.3 mm inside diameter.
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Mike '84 911 Carrera Coupe (totaled) '83 911 SC Coupe ‘06 Aston Martin Vantage V8 |
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04-29-2006, 02:10 PM
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Just saw this thread; this key board mechanic has been fixing a heater box to muffler exhaust leak and installing an A/C system in a 911.
If there is no other information, the thread type defaults to the coarse pitch (distance from crest to crest of thread in mm): M4 is .7, M6 is 1, M8 is 1.25, M10 is 1.5, M12 is 1.75, M14 is 2, etc. See: http://www.metricmcc.com/catalog/Ch10/10-1005.pdf |
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04-29-2006, 06:55 PM
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Thanks Jim. That is very helpful!
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Mike '84 911 Carrera Coupe (totaled) '83 911 SC Coupe ‘06 Aston Martin Vantage V8 |
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04-30-2006, 04:45 AM
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1984 Porsche 911 3.2L
1987 Porsche 911 3.2
