Bolt depot common metric thread pitches standard fine super fine jis.
Metric bolt thread pitch.
American or sae bolt sizes are expressed as diameter x thread pitch x length.
M12 x 25 12 mm diameter coarse thread is assumed 1 75 mm 25 mm long.
Sae bolts will not thread perfectly into a metric nut or metric threaded hole.
M metric thread designation.
In the imperial inch system threads are commonly referred to by measuring an inch and counting how many threads are inside that measurement.
Thread pitch is the number of threads per inch.
For example a thread pitch of 1 5 means that the distance between one thread and the next is 1 5mm.
This bolt is one half inch in diameter has 13 threads per inch and is one inch long.
20 length in millimeters see below this example illustrates how a coarse threaded screw may appear.
Functional diameter is a measure of the ability to assemble the thread.
Bolts screws and studs with specified property classes coarse thread and fine pitch thread.
The thread depth is 0 614 x pitch.
8 nominal diameter in millimeters.
Thread pitch metric fasteners are specified with a thread pitch instead of a thread count.
The thread pitch is the distance between threads expressed in millimeters measured along the length of the fastener.
Here is lightning bolt s metric bolt thread pitch chart.
The rest of the dimensions are tabulated values from the asme standard.
Here r min is minimum root radius t d2 is pitch diameter tolerance and h is height of sharp v thread.
1 0 pitch distance from thread to thread in millimeters.
Bellow are iso din accepted thread pitch charts for commonly found metric fasteners.
The thread angle is 60 o.
Metric threads coarse thread pitches 1 for metric threads pitch is the distance between threads.
The smallest or largest pitch diameter that fits onto a screw or into a nut including all of the form deviations such as lead thread angle taper and roundness.
Metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0 50 0 35 4mm 0 70 0 50 5mm 0 80 0 50 6mm 1 00 0 75 8mm 1 25 1 00 10mm 1 50 1 25 12mm 1 75 1 25 14mm 2 00 1 50 16mm 2 00 1 50 18mm 2 50 1 50 20mm 2 50 1 50 22mm 2 50 1 50 24mm 3 00 2 00 27mm 3 00 2 00 30mm 3 50 2 00 33mm 3 50 2 00 36mm 4 00 3.
An example of a sae bolt size is 1 2x13x1.
Ultimate tensile and proof loads for metric bolts according iso 898 1 mechanical properties of fasteners made of carbon steel and alloy steel part 1.
