How do I go about measuring a bolt in order to find a duplicate?

When I was at Sears last night a saw a gauge like device for measuring thread pitch, but what is the best way to measure bolt diameter and length.

It is a Torx bolt, so if those bolts use a special method.

Scott
baltimore

One option is to look in your phone books yellow pages under "Bolt & Nut", assuming you live in a city large enough to have such a place.

Pick one out and drop in with the bolt. They'll figure it out.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

With a pair of calipers you will be able to measure the diameter and length. You can also measure the distance between the threads with the calipers and then calculate the pitch.

__________________
1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold

Or go to a hardware store and find a nut that screws on - which will tell you diameter and pitch.

You also have to have to check the strength of the bolt (small number on the top).