19.62 seconeds by Usain Bolt in 2008 Olympics
They are threaded the same way as SAE bolts; both have applications that have reverse or "left-handed" threads.
a person who will reach 100metre in 9.5 secthe person who ran it was usain bolt of jaimica and i believe his time is 9.5 seconds, give or takeEvan James Trotter holds the record for the fastest 100m ever ran at 11.58 seconds. And also Jarred Douglas Ott running it at 12.11 seconds.usain bolt set a world record at Berlin on 16 august 2009 - 9.58 seconds. he respectively holds the 150m and 200m world records.Men: Usain Bolt of Jamaica - 9.58 seconds on August 16, 2009. Women: Florence Griffith-Joyner of the United States - 10.49 seconds on July 16, 1988.As of February 10, 2014, the fastest time for the 100 meter dash is 9.85 seconds. This record is held by Olusoji Fasuba, from Nigeria.9.46 SECONDS9.58 by Usain Bolt.
inch size bolts have the number of teeth in the length of 25.4mm length while in mm size bolts has the number of teeth on the 1mm length...so mm size(TPM) thread is more strengthen than inch(TPI) size bolts
A bolt is not a standard object.
you can identify the slight different between an imperial bolt and a metric bolt by looking how fine their thread pitch looks like or feels like
Take the bolt to a machine shop and they can tell you . if you dont have it most metric auto bolts have a 125 thread pitch but i dont know the diameter.
Standard thread are meassured in number of threads per inch (example 1/4-20) 1/4 inch dia. bolt with 20 threads per inch. Metric threads are measured in mm between thread (M8 x 1.5), an 8 MM bolt with a thread pitch of 1.5MM between threads.
A thread guide is a tool to measure the number and pitch of threads on a bolt
The first number is the diameter of the bolt in millimeters and the second is the length in millimeters.So just like a 1/2 x 6 US bolt is 1/2 inch in diameter and 6 inches long...a 6x14 metric bolt will be 6 millimeters in diameter and 14 millimeters long.There is another measurement you may have to worry about with larger sizes. Namely the thread pitch. In metric you typically only see fine thread bolts starting at 8mm (8 millimeter diameter) and up.You may see measurements like 8 x 1.0 x 40. This would be an 8mm diameter bolt 40mm long with a 1.0 thread pitch. The standard pitch for 8mm bolts is 1.25 so this would be a fine thread bolt.
6mm bolt with 1.0 thread pitch
the parts of the screw are thread, pitch, and the last is bolt
8mm is metric size for bolt125 pitch is the number of threads per inch
I believe it is 12mmX1.75 thread pitch.
A thread gauge is a tool used for identifying the particular thread on a bolt or screw. The gauge will have several blades with saw like teeth of different sizes. You match a particular gauge to the thread which will then tell you what size thread it is. gauges come in various pitches to match different screw threads. UNF, UNC, Whitworth, Metric etc. Each has a different pitch angle and thread per inch or millimetre.An image of a thread gauge can be seen HERE
Thread series cover designations of diameter/pitchcombinations that are measured by the number of threads per inch (TPI) applied to a single diameter
1/2 by 20 which is a fine thread grade 8 bolt 1.5 inches in length.